Publications

- 2024 -

1. Seong-il Im, Hyejin Lee, Jaesang Lee, Jae-Seung Jeong, Joon Young Kwak, Keunsu Kim, Jeong Ho Cho, Hyunsu Ju*, Suyoun Lee*, "Highly-scalable stochastic neuron based on Ovonic Threshold Switch (OTS) and its applications in Restricted Boltzmann Machine (RBM) ", Chaos, Solitons & Fractals, accepted (2024)

2. Sangheon Kim, Unhyeon Kang, Jiyoung Gu, Jaewook Kim, Jongkil Park, Gyu Weon Hwang, Seongsik Park, Hyun Jae Jang, Tae-Yeon Seong, and Suyoun Lee*, "An Artificial Multimodal Neuron with Associative Learning Capabilities: Acquisition, Extinction, and Spontaneous Recovery", ACS Applied Materials & Interfaces, accepted (2024)

3. Young Woong Lee, Seon Jeong Kim, Sangheon Kim, Jaewook Kim, Jongkil Park, YeonJoo Jeong, Gyu Weon Hwang, Seongsik Park, Bae Ho Park, and Suyoun Lee*, "Demonstration of an energy-efficient Ising solver composed of Ovonic Threshold Switch (OTS)-based nano-oscillators (OTSNOs)", Nano Convergence 11,  20 (2024)

4. Seung Gyo Jeong, Seong Won Cho, Sehwan Song, Jin Young Oh, Do Gyeom Jeong, Gyeongtak Han, Hu Young Jeong, Ahmed Yousef Mohamed, Woo-suk Noh, Sungkyun Park, Jong Seok Lee, Suyoun Lee*, Young-Min Kim*, Deok-Yong Cho*, and Woo Seok Choi*"Dimensionality Engineering of Magnetic Anisotropy from the Anomalous Hall Effect in Synthetic SrRuO3 Crystals", Nano Letters, accepted (2024)

5. Yooyeon Jo, Dong Yeon Woo, Gichang Noh, Eunpyo Park, Min Jee Kim, Yong Woo Sung, Dae Kyu Lee, Jongkil Park, Jaewook Kim, YeonJoo Jeong, Suyoun Lee, Inho Kim, Jong-Keuk Park, Seongsik Park, Joon Young Kwak, "Hardware Implementation of Network Connectivity Relationships Using 2D hBN-Based Artificial Neuron and Synaptic Devices", Adv. Func. Mat. 34, 2309058 (2024)

- 2023 -

1. Ji-Hoon Kang, Heechang Shin, Ki Seok Kim, Min-Kyu Song, Doyoon Lee, Yuan Meng, Chanyeol Choi, Jun Min Suh, Beom Jin Kim, Hyunseok Kim, Anh Tuan Hoang, Bo-In Park, Guanyu Zhou, Suresh Sundaram, Phuong Vuong, Jiho Shin, Jinyeong Choe, Zhihao Xu, Rehan Younas, Justin S. Kim, Sangmoon Han, Sangho Lee, Sun Ok Kim, Beomseok Kang, Seungju Seo, Hyojung Ahn, Seunghwan Seo, Kate Reidy, Eugene Park, Sungchul Mun, Min-Chul Park, Suyoun Lee, Hyung-Jun Kim, Hyun S. Kum, Peng Lin, Christopher Hinkle, Abdallah Ougazzaden, Jong-Hyun Ahn, Jeehwan Kim & Sang-Hoon Bae, "Monolithic 3D integration of 2D materials-based electronics towards ultimate edge computing solutions", Nature Materials 22, 1470 (2023)

2. Jeong Ung Ahn, Jeehoon Jeon, Seong Won Cho, Suyoun Lee, OukJae Lee, Hyun Cheol Koo, "Spin Torque Ferromagnetic Resonance Measurements in a Bulk Rashba System", Physica Status Solidi (b) 2023, 2300334 (2023)

3. Seong Won Cho, Young Woong Lee, Sang Heon Kim, Seungwu Han, Inho Kim, Jong-Keuk Park, Joon Young Kwak, Jaewook Kim, YeonJoo Jeong, Gyu Weon Hwang, Kyeong Seok Lee, Seongsik Park, and Suyoun Lee*, "Reduction of carrier density and enhancement of the bulk Rashba spin-orbit coupling strength in Bi2Te3/GeTe superlattices",  Journal of Alloys and Compounds 957, 170444 (2023)

4. Jeong Ung Ahn, Jeehoon Jeon, Seong Won Cho, OukJae Lee, Suyoun Lee, Hyun Cheol Koo*, "Observation of the Nernst effect in a GeTe/NiFe structure", Current Applied Physics 49, 12 (2023)

5. Keonhee Kim, Jae Gwang Lim, Su Man Hu, Yeonjoo Jeong, Jaewook Kim, Suyoun Lee, Joon Young Kwak, Jongkil Park, Gyu Weon Hwang, Kyeong-Seok Lee, Seongsik Park, Wook-Seong Lee, Byeong-Kwon Ju, Jong Keuk Park & Inho Kim, "Multifilamentary switching of Cu/SiOx memristive devices with a Ge-implanted a-Si underlayer for analog synaptic devices", NPG Asia Materials 15, 48 (2023)

6. Seong Won Cho, In Hak Lee, Youngwoong Lee, Sangheon Kim, Yeong Gwang Khim, Seung-Young Park, Younghun Jo, Junwoo Choi, Seungwu Han, Young Jun Chang, Suyoun Lee*, "Investigation of the mechanism of the anomalous Hall effects in Cr2Te3/(BiSb)2(TeSe)3 heterostructure", Nano Convergence 10, 2 (2023)

7. Jongkil Park, YeonJoo Jeong, Jaewook Kim, Suyoun Lee, Joon Young Kwak, Jong-Keuk Park, and Inho Kim, "High Dynamic Range Digital Neuron Core With Time-Embedded Floating-Point Arithmetic", IEEE TCAS-I 70, 290 (2023)

- 2022 -

1. Jaesang Lee, Seong Won Cho, Young Woong Lee, Joon Young Kwak, Jaewook Kim, Yeonjoo Jeong, Gyu Weon Hwang, Seongsik Park, SangBum Kim, Suyoun Lee*, "Rational engineering of a switching material for the Ovonic threshold switching (OTS) device with mitigated electroforming", Journal of Materials Chemistry C 10, 18033 (2022)

2. Eunpyo Park, Jae Eun Seo, Gichang Noh, Yooyeon Jo, Dong Yeon Woo, In Soo Kim, Jongkil Park, Jaewook Kim, YeonJoo Jeong, Suyoun Lee, Inho Kim,  Jong-Keuk Park, Sangbum Kim, Jiwon Chang, and Joon Young Kwak*, "A pentagonal 2D layered PdSe2-based synaptic device with a graphene floating gate", Journal of Materials Chemistry C 10, 12536 (2022)

3. Minkyung Kim, Eunpyo Park, Jongkil Park, Jaewook Kim, YeonJoo Jeong, Suyoun Lee, Inho Kim, Jong-Keuk Park, Sung-Yun Park, Joon Young Kwak*, "A triple-level cell charge trap flash memory device with CVD-grown MoS2", Results in Physics 38, 105620 (2022)

4. Samuel Shin, Dae Cheol Kang, Keonhee Kim, Yeonjoo Jeong, Jaewook Kim, Suyoun Lee, JoonYoung Kwak, Jongkil Park, Gyu Weon Hwang, Inho Kim, "Emulating the short-term plasticity of a biological synapse with a ruthenium complex-based organic mixed ionic–electronic conductor", Materials Advances 3, 2827 (2022)

5. Jaehyun Kang, Taeyoon Kim, Suman Hu, Jaewook Kim, Joon Young Kwak, Jongkil Park, Jong-Keuk Park, Inho Kim, Suyoun Lee, Sangbum Kim, and YeonJoo Jeong, "Cluster-type analogue memristor by engineering redox dynamics for high-performance neuromorphic computing", Nature Communications 13, 4040 (2022)

6. Sang Yeol Shin, Suyeon Lee, Byung-ki Cheong, and Yong Gyu Choi*, "Impact of local atomic arrangements on ovonic threshold switching of amorphous Ge-As-Se thin films", Scripta Materialia 220, 114899 (2022)

7. Chanyeol Choi, Hyunseok Kim, Ji-Hoon Kang, Min-Kyu Song, Hanwool Yeon, Celesta S. Chang, Jun Min Suh, Jiho Shin, Kuangye Lu Bo-In Park, Yeongin Kim, Han Eol Lee, Doyoon Lee, Jaeyong Lee, Ikbeom Jang, Subeen Pang, Kanghyun Ryu, Sang-Hoon Bae, Yifan Nie, Hyun S. Kum, Min-Chul Park, Suyoun Lee, Hyung-Jun Kim, Huaqiang Wu*, Peng Lin* and Jeehwan Kim*, "Reconfigurable heterogeneous integration using stackable chips with embedded artificial intelligence", Nature Electronics 5, 386 (2022)

8. Junseok Lee, Seonjeong Kim, Seongjin Park, Jaesang Lee, Wonseop Hwang, Seong Won Cho, Kyuho Lee, Sun Mi Kim, Tae-Yeon Seong, Cheolmin Park, Suyoun Lee*, and Hyunjung Yi*, "An Artificial Tactile Neuron Enabling Spiking Representation of Stiffness and Disease Diagnosis ", Advanced Materials 34, 2201608 (2022)

9. Jo, Yeji; Mun, Kyusik; Jeong, Yeonjoo; Kwak, Joon Young; Park, Jongkil; Lee, Suyoun; Kim, Inho; Park, Jongkeuk; Hwang, Gyu Weon; Kim, Jaewook*, "A Poisson Process Generator Based on Multiple Thermal Noise Amplifiers for Parallel Stochastic Simulation of Biochemical Reactions",  Electronics 11, 1039 (2022)

10. Hyejin Lee, Seong Won Cho, Seon Jeong Kim, Jaesang Lee, Keun Su Kim, Inho Kim, Jong-Keuk Park, Joon Young Kwak, Jaewook Kim, Jongkil Park, YeonJoo Jeong, Gyu Weon Hwang, Kyeong-Seok Lee, Daniele Ielmini, Suyoun Lee*, "Three-Terminal Ovonic Threshold Switch (3T-OTS) with Tunable Threshold Voltage for Versatile Artificial Sensory Neurons ", Nano Letters 22, 733 (2022)

11. SUMAN HU, JAEHYUN KANG, TAEYOON KIM, SUYOUN LEE, JONG KEUK PARK, INHO KIM, JAEWOOK KIM, JOON YOUNG KWAK, JONGKIL PARK, GYU-TAE KIM, SHINHYUN CHOI, AND YEONJOO JEONG*, "SPICE Study of STDP Characteristics in a Drift and Diffusive Memristor-Based Synapse for Neuromorphic Computing ", IEEE Access 10, 6381 (2022)

- 2021 -

1. Jeehoon Jeon, Seong Won Cho, OukJae Lee, Jinki Hong, Joon Young Kwak, Seungwu Han, Soonho Jung, Yunseok Kim, Hye-Won Ko, Suyoun Lee*, Kyung-Jin Lee*, & Hyun Cheol Koo*, "Field-like spin-orbit torque induced by bulk Rashba channel in GeTe/NiFe bilayers", NPG Asia Materials 13, 76 (2021)

2. Keonhee Kim, Dae Cheol Kang, Yeonjoo Jeong, Jaewook Kim, Suyoun Lee, Joon Young Kwak, Jongkil Park, Gyu Weon Hwang, Kyeong-Seok Lee, Byeong-Kwon Ju, Jong Keuk Park*, Inho Kim*, " Ion beam-assisted solid phase epitaxy of SiGe and its application for analog memristors", Journal of Alloys and Compounds 884, 161086 (2021)

3. Seong Won Cho, Seung Gyo Jeong, Hee Young Kwon, Sehwan Song, Seungwu Han, Jung Hoon Han, Sungkyun Park, Woo Seok Choi*, Suyoun Lee*, Jun Woo Choi*, "Tailoring topological Hall effect in SrRuO3/SrTiO3 superlattices", Acta Materialia 216, 117153 (2021)

4. In Hak Lee, Byoung Ki Choi, Hyuk Jin Kim, Min Jae Kim, Hu Young Jeong, Seung Young Park, Younghun Jo, Chanki Lee, Junwoo Choi, Seong Won Cho, Suyuon Lee, Younghak Kim, Beom Hyun Kim, Kyeong Jun Lee, Jineun Heo, Seo Hyoung Chang, Fengping Lee, Jeil Jung, Young Jun Chang*, "Modulating Curie Temperature and Magnetic Anisotropy in Nanoscale-Layered Cr₂Te₃ Films: Implications for RoomTemperature Spintronics ", ACS  Applied Nano Materials 4, 4810 (2021)

5. Taeyoon Kim, Suman Hu, Jaewook Kim, Joon Young Kwak, Jongkil Park, Suyoun Lee, Inho Kim, Jong-Keuk Park and YeonJoo Jeong*, "Spiking Neural Network (SNN) With Memristor Synapses Having Non-linear Weight Update", Frontiers in Computational Neuroscience  15, 646125 (2021)

6. Minkyung Kim, Eunpyo Park, In Soo Kim, Jongkil Park, Jaewook Kim, YeonJoo Jeong, Suyoun Lee, Inho Kim, Jong-Keuk Park, Tae-Yeon Seong, and Joon Young Kwak*, "A Comparison Study on Multilayered Barrier Oxide Structure in Charge Trap Flash for Synaptic Operation", Crystals 11, 70 (2020)

- 2020 -

1. Keonhee Kim, Soojin Park, Su Man Hu, Jonghan Song, Weoncheol Lim, Yeonjoo Jeong, Jaewook Kim, Suyoun Lee, Joon Young Kwak, Jongkil Park, Jong Keuk Park, Byeong-Kwon Ju, Doo Seok Jeong, and Inho Kim*, "Enhanced Analog Synaptic Behaviors of SiNx/a-Si Bilayer Memristor Through Ge Implantation", NPG Asia Materials 12, 77 (2020)

2. Park, Eunpyo; Kim, Minkyung; Kim, Tae Soo; Kim, In Soo; Park, Jongkil; Kim, Jaewook; Jeong, YeonJoo; Lee, Suyoun; Kim, Inho; Park, Jong-Keuk; Kim, Gyu Tae; Chang, Jiwon; Kang, Kibum; Kwak, Joon Young*, "A 2D material-based floating gate device with linear synaptic weight update", Nanoscale 12, 24503 (2020)

3. J. Jeon, D. H. Lee, D. H. Choi, H. –J. Chung, S. H. Jhang, Suyoun Lee*, B. H. Park*, “Large Temperature-Independent Magnetoresistance without Gating Operation in Monolayer Graphene”, ACS Applied Materials & Interfaces 12, 53134 (2020)

4. Umasankar Dash, D.Kumar, Kyoungjun Lee, T.S.Suraj, M.S. Ramachandra Rao, Seung Chul Chae, A. Fouchet, Suyoun Lee, W. Prellier, Chang Uk Jung, "Charge transfer and magnetotransport properties of Sr1-xLaxRu1-xCoxO3 epitaxialthin films", Journal of Alloys and Compounds 847 , 156142 (2020)

5. Seong Gon Park, Kyu Hyoung Lee, Jae-Hoon Lee, Geukchan Bang, Junghwan Kim, Hee Jung Park, Min Suk Oh, Suyoun Lee, Young-Hoon Kim, Young-Min Kim, Hideo Hosono, Joonho Bang and Kimoon Lee, "Improved polaronic transport under a strong Mott-Hubbard interaction in Cu-substituted NiO", Inorganic chemistry frontiers 7 , 853 (2020)

6. Seung Gyo Jeong, Taewon Min, Sungmin Woo, Jiwoong Kim, Yu-Qiao Zhang, Seong Won Cho, Jaeseok Son, Young-Min Kim, Jung Hoon Han, Sungkyun Park, Hu Young Jeong, Hiromichi Ohta, Suyoun Lee, Tae Won Noh, Jaekwang Lee, Woo Seok Choi, "Phase instability amid dimensional crossover in artificial oxide crystal", Physical Review Letters 124 , 026401 (2020)

7. Milim Lee, Seong Won Cho, Seon Jeong Kim, Hyunsu Ju, Yeonjin Yi, Byung-ki Cheong, and Suyoun Lee*, "Simple Artificial Neuron Using an Ovonic Threshold Switch Featuring Spike-Frequency Adaptation and Chaotic Activity", Physical Review Applied 13 , 064056 (2020)

- 2019 -

1. Milim Lee, Seong Won Cho, Yeonjin Yi, and Suyoun Lee*, "Composition-dependence of the spin-orbit coupling properties of epitaxial (Bi1-xSbx)2(Te1-ySey)3 thin films", Journal of Alloys and Compounds 800, 81 (2019)

2. Sang A Lee, Jegon Lee, Seokjae Oh, Suyoun Lee, Jong-Seong Bae, Won Chegal, Mangesh S. Diware, Sungkyun Park, Seo Hyoung Chang, Taekjib Choi, and Woo Seok Choi, "Correlation between Ru–O hybridization and the oxygen evolution reaction in ruthenate epitaxial thin films", Sustainable Energy & Fules 3 , 2867 (2019)

- 2018 -

1. Seong Won Cho, Inhak Lee, Milim Lee, Sungmin Woo, Kanghoon Yim, Seungwu Han, Woo Seok Choi, and Suyoun Lee*, "Effect of Nb concentration on the magnetotransport properties and the spin-orbit coupling strength in Nb-doped SrTiO3 epitaxial thin films", Scientific Reports 8, 5739 (2018)

2. Suyoun Lee, Young Tack Lee, Kyu Hyoung Lee, Sung Wng Kim, Do Kyung Hwang, and Kimoon Lee, "Quasi-two-dimensional transport in electron doped SnSe2", Advanced Electronic Materials 4, 17005 (2018)

- 2017 -

1. Yuan Jiao, Seong Won Cho, Suyoun Lee, Sanghoon Kim, Minseok Kim, Kahyun Hur, Sunmi Yoon, Myoung-Woon Moon, Aiying Wang, “A Hierarchical Porous Carbon Material for Highly-Sensitive Biochemical Sensors", Advanced Engineering Materials 00, 1700608 (2017)

2. Sang A Lee, Seokjae Oh, Jegon Lee, Jae-Yeol Hwang, Ji-Woong Kim, Sungkyun Park, Jong-Seong Bae, Tae Eun Hong, Suyoun Lee, Sung Wng Kim, Won Nam Kang, and Woo Seok Choi, "Tuning electromagnetic properties of SrRuO3 epitaxial thin films via atomic control of cation vacancies", Scientific Reports 7, 11583 (2017)

3. Min Sup Choi, Byung-ki Cheong, Chang Ho Ra, Suyoun Lee, Jee-Hwan Bae, Sungwoo Lee, Gun-Do Lee, Cheol-Woong Yang, James Hone, and Won Jong Yoo, "Electrically driven reversible phase changes in layered In2Se3 crystalline film", Advanced Materials 29, 1703568 (2017)

4. Umasankar Dash, Susant Kumar Acharya, Seong Won Cho, Suyoun Lee, Kyoungjun Lee, Seung Chul Chae, Myung Rae Cho, Chang Uk Jung, "Large magnetoresistance in LaFeO3-substituted SrRuO3 epitaxial thin films", Journal of Alloys and Compounds 724, 549 (2017)

5. Seong Won Cho, Kwang-Chon Kim, Seong Keun Kim, Byung-ki Cheong, Jin-Sang Kim, and Suyoun Lee*, “Large phase relaxation length in the topological surface states of epitaxial Bi2-xSnxBi3 thin films”, Journal of Alloys and Compounds 723, 942 (2017)

6. J. Jeon, D. H. Lee, D. H. Choi, H. –J. Chung, S. H. Jhang, Suyoun Lee, B. H. Park*, “Extrinsic Disorder-induced Large Magnetoresistance of Monolayer Graphene in Contact with Bismuth Ferrite Nano-island Array”, (under review)

7. S. A. Lee, S. Oh, J. –Y. Hwang, M. Choi, C. Youn, J. W. Kim, S. H. Chang, S. Woo, J. –S. Bae, S. Park, Y. –M. Kim, Suyoun Lee, T. Choi, S. W. Kim, W. S. Choi*, “Enhanced electrocatalytic activity via phase transitions in strongly correlated SrRuO3 thin films”, Energy & Environmental Science 10, 924 (2017)

8. Juhee Seo, Seong Won Cho, Hyung-Woo Ahn, Byung-ki Cheong, and Suyoun Lee, “A study on the interface between an amorphous chalcogenide and the electrode: Effect of the electrode on the characteristics of the Ovonic Threshold Switch (OTS)”, Journal of Alloys and Compounds 691 , 880 (2017)

- 2016 -

1. Hyunwoo Jin, Keundong Lee, Seung-Hyub Baek, Jin-Sang Kim, Byung-ki Cheong, Bae Ho Park, Sungwon Yoon, B. J. Suh, Changyoung Kim, S. S. A. Seo, and Suyoun Lee, “Large linear magnetoresistance in heavily-doped Nb:SrTiO3 epitaxial thin films”, Scientific Reports 6:34295 (2016)

2. Kirstie Raquel Natalia Toreh, Deok Hyeon Kim, Umasankar Dash, The-Long Phan, Bo Wha Lee, Hyun-Woo Jin, Suyoun Lee, Bae Ho Park, Ji-Yong Park, Myung Rae Cho, Yun Daniel Park, Susant Kumar Acharya, Woosuk Yoo, Myung-Hwa Jung, Chang Uk Jung, "The "self spin valve”in oxygen stoichiometric SrRu1-xFexO3-d epitaxial thin films", Journal of Alloys and Compounds 657 , 224 (2016)

- 2015 -

1. Xiaochi Liu, E.H.Hwang*, WonJong Yoo, Suyoun Lee, Byung-ki Cheong, "High carrier mobility in Si-MOSFETs with a hexagonal boron nitride buffer layer", Solid-State Comm. 209-210 , 1 (2015)

2. Hyunwoo Jin, Kwang-Chon Kim, Juhee Seo, Myung-Ghil Chun, Seong Keun Kim, Byung-ki Cheong, Jin-Sang Kim, and Suyoun Lee*, "Quantum transport properties of a topological insulator Bi2Te3 film grown by metallo-organic chemical vapor deposition", Nanoscale 7 , 17359 (2015)

3. Woo Seok Choi, Sang A Lee, Jeong Ho You, Suyoun Lee, Ho Nyung Lee, "Resonant tunneling in a quantum oxide superlattice", Nature Communications 6 , 7424 (2015)

4. Inrok Hwang, Keundong Lee, Hyunwoo Jin, Sunhwa Choi, Eunok Jung, Bae Ho Park, and Suyoun Lee*, "New simple method for Point Contact Andreev Reflection (PCAR) using a self-aligned atomic filament in transition-metal oxides", Nanoscale 7 , 8531 (2015)

- 2014 -

1. Sang Yeol Shin, Roman Golovchak, Suyoun Lee, Byung-ki Cheong, Himanshu Jain, Yong Gyu Choi, “Structural basis of temperature-dependent electrical resistance of evaporation-deposited amorphous GeSe film”, Scripta Materialia 86 , 56 (2014)

2. Sang-Yeol Shin, J. M. Choi, Juhee Seo, Hyung-Woo Ahn, Yong Gyu Choi, Byung-ki Cheong, and Suyoun Lee*, "The effect of doping Sb on the electronic structure and the device characteristics of Ovonic Threshold Switches based on Ge-Se", Scientific Reports 4 , 7099 (2014)

3. V. R. Cooper, S. S. A. Seo, Suyoun Lee, J. S. Kim, W. S. Choi, S. Okamoto, H. N Lee*, "Transparent conducting oxides: A delta-doped superlattice approach", Scientific Reports 4 , 6021 (2014)

4. Octolia T. Tambunan, Kadek J. Parwanta, Susant K. Acharya, Bo Wha Lee, Chang Uk Jung*, Yeon Soo Kim, Bae Ho Park, Huiseong Jeong, Ji-Yong Park, Myung Rae Cho, Yun Daniel Park, Woo Seok Choi, Dong-Wook Kim, Hyunwoo Jin, Suyoun Lee, Seul Ji Song, Sung-Jin Kang, Miyoung Kim, and Cheol Seong Hwang, "Resistance switching in epitaxial SrCoOx thin films", Appl. Phys. Lett. 105 , 063507 (2014)

5. Juhee Seo, Hyung-Woo Ahn, Sang-yeol Shin, Byung-ki Cheong, and Suyoun Lee, "Anomalous reduction of the switching voltage of Bi-doped Ge0.5Se0.5 ovonic threshold switching devices", Appl. Phys. Lett. 104 , 153503 (2014)

- 2013 -

1. Shin-Ik Kim, Dai-Hong Kim, Yoonjung Kim, Seon Young Moon, Min-Gyu Kang, Jong Kwon Choi, Ho Won Jang, Seong Keun Kim, Ji-Won Choi, Seok-Jin Yoon, Hye-Jung Chang, Chong-Yun Kang, Suyoun Lee, Seong-Hyeon Hong, Jin-Sang Kim, and Seung-Hyub Baek, "Non-Volatile Control of 2DEG Conductivity at Oxide Interfaces", Adv. Mat. 25 , 4612 (2013)

2. Su-dong Kim, Hyung-Woo Ahn, Sang-Yeol Shin, Doo Seok Jeong, Seo Hee Son, Hosun Lee, Byung-ki Cheong, Dongwook Shin, and Suyoun Lee, "Threshold-Switching characteristics of metal/GexSe1-x/metal devices", Electrochem. Solid-State Lett. 2 , Q75-Q77 (2013)

3. Hyung-Woo Ahn, Doo Seok Jeong, Byung-ki Cheong, Su-dong Kim, Sang-Yeol Shin, Hyungkwang Lim, Donghwan Kim, and Suyoun Lee, "A study on the scalability of a selector device using threshold switching in Pt/GeSe/Pt", Electrochem. Solid-State Lett. 2, N31-N33 (2013)

4. Hyung-Woo Ahn, Doo Seok Jeong, Byung-ki Cheong, Hosuk Lee, Hosun Lee, Su-dong Kim, Sang-Yeol Shin, Donghwan Kim and Suyoun Lee, "Effect of density of localized states on the ovonic threshold switching charactersitcs of the amorphous GeSe films", Appl. Phys. Lett., 103, 042908 (2013)

- 2012 -

1. Doo Seok Jeong, Hyungkwang Lim, Goon-Ho Park, Cheol Seong Hwang, Suyoun Lee, Byung-ki Cheong, "Threshold resistive and capacitive switching behavior in binary amorphous GeSe", J. Appl. Phys. 111, 102807 (2012)

2. Doo Seok Jeong, Hyung-Woo Ahn, Su-Dong Kim, Myunggi An, Suyoun Lee, and Byung-ki Cheong, "Numerical Study on Passive Crossbar Arrays Employing Threshold Switches as Cell-Selection-Devices", Elec. Mat. Lett. 8, 169 (2012)

3. Byung-ki Cheong, Suyoun Lee, Jeung-hyun Jeong, Sohee Park, Seungwu Han, Zhe Wu, and Dong-Ho Ahn, "Fast and scalable memory characteristics of Ge-doped SbTe phase change materials", Phys. Status Solidi B 249, 1985 (2012)

4. T. Choi, L. Jiang, S. Lee, T. Egami, and H. N. Lee, "High rectification and photovoltaic effect in oxide nano-junctions", New Journal of Physics 14, 093056 (2012)

5. Woo Seok Choi, Suyoun Lee, Valentino R. Cooper, and Ho Nyung Lee, "Fractionally delta-Doped Oxide Superlattices for Higher Carrier Mobilities", Nano Letters 12, 4590 (2012)

6. Jeong, Doo Seok; Lim, Hyungkwang; Park, Goon-Ho; Hwang, Cheol Seong; Lee, Suyoun; Cheong, Byung-ki, "Threshold resistive and capacitive switching behavior in binary amorphous GeSe", J. Appl. Phys. 111, 102807 (2012)

- 2011 -

1. Tae Dong Kang, Andrei Sirenko, Jun-Woo Park, Hyun Seok Lee, Suyoun Lee, Jeung-hyun Jeong, Byung-ki Cheong and Hosun Lee, "Investigation of the Structural and Optical Properties of Ge-doped SbTe Films with Various Sb:Te Ratios", J. Electrochem. Soc. 158, H254 (2011)

- 2010 -

1. Lee, Suyoun; Jeong, Doo Seok; Jeong, Jeung-hyun; Zhe, Wu; Park, Young-Wook; Ahn, Hyung-Woo; Cheong, Byung-ki, "A study on the temperature dependence of the threshold switching characteristics of Ge2Sb2Te5", Appl. Phys. Lett. 96, 023501 (2010)

2. Wu, Zhe; Lee, Suyoun; Park, Young-Wook; Ahn, Hyung-Woo; Jeong, Doo Seok; Jeong, Jeung-hyun; No, Kwangsoo; Cheong, Byung-ki, "Improved stability of a phase change memory device using Ge-doped SbTe at varying ambient temperature", Appl. Phys. Lett. 96, 133510 (2010)

3. Doo Seok Jeong, Seo Hee Son, Suyoun Lee, and Byung-ki Cheong, "Unipolar Switching in Pt/GeSexTe1-x/Pt", Electrochem. Solid-State Lett. 13, G111 (2010)

4. Young-Wook Park, Hyun Seok Lee, Hyung Woo Ahn, Zhe Wu, Suyoun Lee, Jeung-hyun Jeong, Doo Seok Jeong, Kyung-woo Yi and Byung-ki Cheong, "The effect of Ge addition on the RESET operation of a phase-change memory (PCM) device using Ge-doped SbTe", Curr. Appl. Phys. 10, e79 (2010)

- 2009 -

1. Suyoun Lee, Doo Seok Jeong, Jeung-hyun Jeong, Wu Zhe, Young-Wook Park, Won Mok Kim and Byung-ki Cheong, "A study on temperature dependence of characteristics of phase change memory devices", Appl. Phys. Letts. 95, 093504 (2009)

2. Jihoon Choi, Hyun Seok Lee, Taek Sung Lee, Suyoun Lee, Won Mok Kim, Donghwan Kim and Byung-ki Cheong, " Investigation on the role of nitrogen in crystallization of Sb-rich phase change materials", Appl. Phys. Letts. 95, 081905 (2009)

3. Suyoun Lee, Jeung-hyun Jeong, Wu Zhe, Young-Wook Park, Won Mok Kim and Byung-ki Cheong, "Demonstration of a Reliable High-Speed Phase Change Memory (PCM) using Ge-doped SbTe (Ge-ST)", J. Electrochem. Soc. 156, H612 (2009)

4. Suyoun Lee, Jeung-hyun Jeong, Taek Sung Lee, Won Mok Kim and Byung-ki Cheong, "A study on the failure mechanism of a phase change memory in write/erase cycling", IEEE Electron Device Letters 30, 448 (2009)

5. Jeung-hyun Jeong, Hyun Seok Lee, Suyoun Lee, Taek Sung Lee, Won Mok Kim, Wu Zhe, Seul Cham Kim, Kyu Hwan Oh, and Byung-ki Cheong, "Crystallization and memory programming characteristics of Ge-doped SbTe materials of varying Sb:Te ratio", J. Phys. D.: Appl. Phys. 42, 035104 (2009)

6. Jeung-hyun Jeong, Hyung Woo Ahn, Suyoun Lee, Won Mok Kim, Jae Geun Ha, Byung-ki Cheong, " Analysis and improvement of interfacial adhesion of growth-dominant Ge-doped SbTe phase change materials", Appl. Phys. Letts. 94, 011902-1 (2009)

- 2008 -

1. Hyun Seok Lee, Taek Sung Lee, Yoongwoon Lee, Jooho Kim, Suyoun Lee, Joo-Youl Huh, Donghwan Kim and Byung-ki Cheong, "Microstructural and Optical analysis of superresolution phenomena due to Ge2Sb2Te5 thin films at blue light regime ", Appl. Phys. Letts. 93, 221108-1 (2008)

2. Suyoun Lee, Jeung-hyun Jeong, Taek Sung Lee, Won Mok Kim, and Byung-ki Cheong "Bias polarity dependence of a phase change memory with a Ge-doped SbTe: A method for multilevel programming", Appl. Phys. Letts. 92, 243507-1 (2008)

- 2007 -

1. S. H. Cho, S. Lee, T. S. Lee, B. Cheong, W. M. Kim, and K. S. Lee "Microstructural effect on optical properties of Au:SiO2 nanocomposite waveguide films," J. Appl. Phys. 102, 123501-1 (2007)

2. Hyun Seok Lee, Byung-ki Cheong, Taek Sung Lee, Jeung-hyun Jeong, Suyoun Lee, Won Mok Kim, and Donghwan Kim, "On the Origin of Nonlinear Optical Characteristics of Crystalline Ge-Sb-Te Thin Films for Possible Super-resolution Effects", JJAP 46, L277 (2007)