Quantum Computational Materials Science

Tsuchiura research group

About us

Established in October 2023, our group specializes in the theoretical study of superconductors and magnetic materials with topological quantum states, based on theoretical physics and quantum computational methods. Current research areas include topological superconductivity with broken spatial symmetries, the analysis of anomalous transport properties in magnetic topological materials, and the application of the VQE algorithm to the study of strongly correlated superconductors.

Research interests

Superconductivity:
- novel superconducting states with broken symmetries in the doped Kitaev model
- Anomalous Josephson effects and diode effects in topological superconducting ladder systems
- the pseudogap state in cuprate superconductors
Magnetic properties and novel transport phenomena in rare-earth intermetallics:
- transverse thermoelectric effects inSmCo5
- spin reorientation phenomena and transverse thermoelectric effects in DyCo5
Magnetic materials data science with ab-initio calculations:
- magnetic materials research based on data assimilation method and ab-initio calculations
Quantum computations for strongly correlated electronic systems:
- hybrid quantum-classical computing approach for strongly correlated superconducting states

Updates

19 Jun. 2025: M2 student Hörnis-san received the Outstanding Poster Prize at ICT2025.
15-19 Jun. 2025: D2 student Wang-san and M2 student Hörnis-san gave poster presentations at ICT2025 held in Sendai.
7 Jun. 2025: Leo-san played in the Department of Applied Physics softball tournament.
19 May 2025: Dr. Alena Vishina from Uppsala University has joined our group for a week-long research visit. We're excited to collaborate and exchange ideas during her stay!
Apr. 2025: We welcomed two new B4 students to our group.

past updates

20 Mar. 2025: D1 student Wang-san gave a talk titled "Theoretical Analysis of Transverse Thermoelectric Effects Accompanied by Spin-reorientation Transition in RCo5 systems" at the March Meeting of the Physical Society of Japan (held online).
19 Mar. 2025: D3 student Xie-san presented a talk titled "Josephson Diode Effects in Kitaev Ladder Systems", and M2 student Kawabata-san gave a talk titled "Theoretical Study on the Surface State of CaAg1-xPdxP" at the March Meeting of the Physical Society of Japan (held online).
14 Mar. 2025: Prof. Tsuchiura gave a lecture at Toin High School in Wakayama city as an outreach program.
10 Mar. 2025: B4 student Syahriza-san gave a presentation titled "Analysis of Magnetic Anisotropy in Sendust Thin Films Using Data-Assimilation" at the March meeting of The Japan Institute of Metals and Materials at Tokyo Metropolitan University.
5 Feb. 2025: M2 student Hörnis-san gave a presentation titled "Theoretical Study on Novel Thermal Control Devices using Topological Magnets TbMn6Sn6" at COLABS Student Research Symposium at Tohoku University.
3 Dec.: M2 student Kawabata-san gave a presentation titled "Theoretical Study on the Electronic and Superconducting State in CaAg1-xPdxP" at ISS2024 in Kanazawa.
4 Nov.: Our paper on the magnetoelastic effects of YCo5 has been published in Phys. Rev. Materials (also on arXiv).
31 Oct.: Wang-san gave a presentation at the Spintronics Special Research Meeting held at Iwate University.
31 Oct.: Prof. Tsuchiura gave a lecture at Nenoshiroishi Junior High School as an outreach program.
11 Oct.: Leo-san's welcome party.
3 Oct.: We are happy to annouce that Mr. Leonard Hörnis has joined our research group as an exchange student from Heidelberg University under the support of the COLABS program.
31 July: Xie-san has come back to our group from ETH-Zurich.
30-31 July: Tohoku University Open campus event.
8 Jun. 2024: We played in the Department of Applied Physics softball tournament.
24 Apr. 2024: Xie-san will give an oral presentation at ICM2024.
15 Apr. 2024: we held an welcome party.
3 Apr. 2024: We are happy to annouce that Mr. Oscar Törnquist has joined our research group as an exchange student from Uppsala University under the support of the COLABS program.
22-29, Mar. 2024: Prof. Tsuchiura visits Professor Manfred Sigrist at ETH-Zurich again.
5 Dec. 2023: the group website opened.
30 Nov. 2023: Chengrong Xie, a doctor course student, is studying abroad with Prof. Manfred Sigrist at ITP, ETH-Zurich . This plan is supported by the Graduate Program in Spintronics (GPspin) at Tohoku University, and also by ETH-Zurich.
29 Nov. 2023: Prof. Seiichiro Suga, one of our collaborators, gave a presentation on our recent results on the superconducting states in the doped Kitaev model at ISS2023 .
1 Oct. 2023: the research group is newly established.
16-17, Sep. 2023: Chengrong Xie and Shibo Wang, graduate students, gave their presentation on their recent results at 2023 Annual Meeting of the physical Society of Japan, held in Sendai.
20-26, Aug. 2023: Prof. Tsuchiura visits Professor Manfred Sigrist at ETH-Zurich to discuss their research problems.
2023年8月5-12日：M1の桝村皐我さんが，共同研究者の原嶋庸介先生のもとに1週間滞在し，研究打ち合わせを行いました．
2023年4月17-28日：Uppsala大学のAlena Vishinaさんが土浦准教授のもとに2週間滞在し共同研究の打ち合わせをしました．
2023年3月5-10日：土浦准教授がInstitute of Physics of ASCRのPavel Novák先生を訪問し，共同研究の打ち合わせを行いました．