Meeting Schedule in 2021 Fall semester
10/ 6(Wed.)
9:00-12:00 Safety training @keio-staff.webex.com/meet/kamihara_yoichi
10/13(Wed.)
9:00-10:30 Proceeding reports by A group @ keio-staff.webex.com/meet/kamihara_yoichi
10:30-11:00 Sub group meetings @ each webex meeting
11:00-12:00 Technical free discussion
10/20(Wed.)
9:00-10:30 Proceeding reports by B group @keio-staff.webex.com/meet/kamihara_yoichi
10:30-11:00 Sub group meetings @ each webex meeting
11:00-12:00 Technical free discussion
10/27(Wed.)
9:00-10:30 Proceeding reports by C group @keio-staff.webex.com/meet/kamihara_yoichi
10:30-11:00 Sub group meetings @ each webex meeting
11:00-12:00 Technical free discussion
11/ 3(Wed.)
9:00-10:30 Proceeding reports by D group @ keio-staff.webex.com/meet/kamihara_yoichi
10:30-11:00 Sub group meetings @ each webex meeting
11:00-12:00 Technical free discussion
11/10(Wed.)
9:00-10:30 Proceeding reports by A group @keio-staff.webex.com/meet/kamihara_yoichi
10:30-11:00 Sub group meetings @ each webex meeting
11:00-12:00 Technical free discussion
11/17(Wed.)
9:00-10:30 Proceeding reports by B group @keio-staff.webex.com/meet/kamihara_yoichi
10:30-11:00 Sub group meetings @ each webex meeting
11:00-12:00 Technical free discussion
12/ 1(Wed.)
9:00-10:30 Proceeding reports by C group @keio-staff.webex.com/meet/kamihara_yoichi
10:30-11:00 Sub group meetings @ each webex meeting
11:00-12:00 Technical free discussion
12/ 8(Wed.)
9:00-10:30 Proceeding reports by D group @keio-staff.webex.com/meet/kamihara_yoichi
10:30-11:00 Sub group meetings @ each webex meeting
11:00-12:00 Technical free discussion
12/15(Wed.)
9:00-10:30 Discussion for INDEPENDENT STUDY ON FUNDAMENTAL SCIENCE AND TECHNOLOGY (M1) @keio-staff.webex.com/meet/kamihara_yoichi
10:30-11:00 Sub group meetings @ each webex meeting
11:00-12:00 Technical free discussion
12/22(Wed.)
9:00-10:30 Discussion for Master thesis (M2) @keio-staff.webex.com/meet/kamihara_yoichi
10:30-11:00 Sub group meetings @ each webex meeting
11:00-12:00 Technical free discussion
1/12 (Wed.)
9:00-10:30 Discussion for INDEPENDENT STUDY ON FUNDAMENTAL SCIENCE AND TECHNOLOGY (M1) @keio-staff.webex.com/meet/kamihara_yoichi
10:30-11:00 Sub group meetings @ each webex meeting
11:00-12:00 Technical free discussion
1/19 (Wed.) Discussion for Master thesis (M2) @keio-staff.webex.com/meet/kamihara_yoichi
9:00-10:30 TBA
10:30-11:00 Sub group meetings @ each webex meeting
11:00-12:00 Technical free discussion
Notices (2021 Aug. 30th)
第45回 日本磁気学会 学術講演会 (オンライン開催)
https://www.magnetics.jp/kouenkai/2021/session/index.html
にて以下の報告を行います。
9月2日13:00-14:45 B会場
02pB-1 13:00~13:15
Temperature Dependence of Specific Heat of EuSn2As2, a 2D Antiferromagnetic Compound
W. Lee, R. Sakagami, K. Hirata, M. Matoba, Y. Kamihara
02pB-6 14:15~14:30
鉄系超伝導体SmFeAsO0.77H0.14の磁気的性質
川松拓也, 堀地竜成, 的場正憲, 神原陽一
02pB-7 14:30~14:45
EuSn2P2の多結晶合成
劉子豪, 坂上良介, 神原陽一
Notices (2021 May 11th)
Schedule
5/12 9:00-11:00 Preparation for the MSSJ
5/19 9:00-10:30 Proceeding reports by C group @ keio-staff.webex.com/meet/kamihara_yoichi
10:30-11:00 Sub group meetings @ each webex meeting
11:00-12:00 Technical free discussion
5/26 9:00-10:30 Proceeding reports by D group
10:30-11:00 Sub group meetings @ each webex meeting
11:00-12:00 Technical free discussion
6/ 2 9:00-10:30 Proceeding reports by A group
10:30-11:00 Sub group meetings @ each webex meeting
11:00-12:00 Technical free discussion
6/ 9 9:00-10:30 Proceeding reports by B group @ keio-staff.webex.com/meet/kamihara_yoichi
10:30-11:00 Sub group meetings @ each webex meeting
11:00-12:00 Technical free discussion
6/16 9:00-10:30 Proceeding reports by C group
10:30-11:00 Sub group meetings @ each webex meeting
11:00-12:00 Technical free discussion
6/23 9:00-10:30 Proceeding reports by D group
10:30-11:00 Sub group meetings @ each webex meeting
11:00-12:00 Technical free discussion
6/30 Discussion for INDEPENDENT STUDY ON FUNDAMENTAL SCIENCE AND TECHNOLOGY (M1)
9:00-10:30 TBA
10:30-11:00 Sub group meetings @ each webex meeting
11:00-12:00 Technical free discussion
7/7 Discussion for Master thesis (M2)
9:00-10:30 TBA
10:30-11:00 Sub group meetings @ each webex meeting
11:00-12:00 Technical free discussion
News (2021 April 23rd)
2021年度学術講演大会(2021年5月20日(木)9:30~17:00,5月21日(金)10:00~19:55)
にて, 以下の発表を行います.
5月20日(木)
ゾルゲル法を用いた超伝導性を示すBi2Sr2CaCu2O8+xの合成
(**慶應大理工, *慶應大)〇松村崇大**, 竹原有哉**, 的場正憲*, 神原陽一*
1分間プレゼンテーション, 2021年5月20日(木) 14:40~15:00
ポスターは, 14:40からbox上
EuSn2As2のスコッチテープ法による薄膜化とプロファイル測定
(*慶応大理工)◎山田悠太朗*, 坂上良介*, 神原陽一*, 的場正憲*
(ポスター発表部門の若手奨励賞 受賞 http://www.mssj.gr.jp/kikaku1/kikaku1~2021.html#jyusyou)
1分間プレゼンテーション, 2021年5月20日(木) 14:40~15:00
ポスターは, 14:40からbox上
5月21日(金)
16:05~16:20
酸素欠損量の異なるYBa2Cu3O7-δの酸素発生反応の触媒活性
(*慶應大理工)◎貝塚泰介*, 竹原有哉*, 神原陽一*, 的場正憲*
16:20~16:35
SmFeAsO0.84F0.16 (nominal x=0.16) の輸送特性測定
(*慶應大理工)◎小林幸弘*, 神原陽一*, 坂上良介*
News (2021 April 20th)
慶應義塾, 島根大学の共同研究である
以下の論文が発行されました.
題目: 複合アニオン層状化合物 LaCu1-δS0.5Se0.5O (δ~0.01)多結晶縮退半導体の光学バンドギャップ内構造
引用: N. Azuma, H. Sawada, H. Itoh, R. Sakagami, M. Matoba, H. Usui, and Y. Kamihara, Mater. Sci. Tech. Jpn. 58, 64-68 (2021). In-gap-states of a mixed anion layered compound, polycrystalline LaCu1-deltaS0.5Se0.5O (delta~ 0.01) as a degenerate semiconductor (in Japanese); 東伸彦,澤田拓希,伊藤大平,坂上良介,的場正憲,臼井秀知,神原陽一, 材料の科学と工学 58, 64-68 (2021). 複合アニオン層状化合物 LaCu1-δS0.5Se0.5O (δ~0.01)多結晶縮退半導体の光学バンドギャップ内構造
雑誌のURL: http://www.mssj.gr.jp/zk/zk.htm
報告書用: 東伸彦,澤田拓希,伊藤大平,坂上良介,的場正憲,臼井秀知,神原陽一, “複合アニオン層状化合物 LaCu1-δS0.5Se0.5O (δ~0.01)多結晶縮退半導体の光学バンドギャップ内構造” 材料の科学と工学 58 (2021) 64-68
要約: 複合アニオン層状化合物LaCu1-δS0.5Se0.5Oを固相反応により合成した.いくつかのLaCu1-δS0.5Se0.5O(undoped, δ~0.01, and δ~0.02)試料を合成した.縮退したバルクの半導体のLaCu1-deltaS0.5Se0.5Oがδ~0.01で出現し, p型キャリアがCu欠陥Cu1-δS0.5Se0.5層によりドープされた.電気伝導を支配するバンドギャップ内構造は,δ~0.01のバンド図にて, 価電子帯の〜0.5 eV高エネルギー側で観測された.
Digest: Semiconducting mixed anion layered compounds (MALC) LaCu1-delta S0.5Se0.5O are synthesized via solid state reaction. We synthesized several nominal LaCu1-deltaS0.5Se0.5O (delta = 0, delta~ 0.01, and delta~ 0.02). A degenerated semiconducting bulk LaCu1-deltaS0.5Se0.5O appears at delta~ 0.01. p-type carriers are doped due to Cu deficient Cu1-deltaS0.5Se0.5 layers in LaCu1-deltaS0.5Se0.5O. In-gap states, which dominate electrical conduction, are observed at energy ~0.5 eV higher than that of the valence band in an energy band diagram for delta~ 0.01.
News (2021 March 26th)
一般社団法人 日本材料科学会 第8回マテリアルズ・インフォマティクス基礎研究会
(共催 The Topical Symposium of Center for Spintronics Research Network (CSRN), Keio University 共催: 慶大スピントロニクス研究開発センター(CSRN at Keio Univ.))
を慶應義塾大学 日吉キャンパス 来往舎シンポジウムスペースにて開催します.
http://www.mssj.gr.jp/210312_program.pdf
News (2021 March 5th)
R. Sakagami, Y. Goto, H. Karimata, N. Azuma, M. Yamaguchi, S. Iwasaki, M. Nakanishi, I. Kitawaki, Y. Mizuguchi, M. Matoba, and Yoichi Kamihara, J. J. Appl. Phys. 60, 035511_1-7 (2021). Thermoelectric transport properties of the van der Waals-type layered rhombohedral SnAs-based compound, EuSn2As2
URL: https://iopscience.iop.org/article/10.35848/1347-4065/abe449
坂上が筆頭著者となる共著論文が発行されました.
関連情報 "導体の熱伝導率測定の苦労話" 神原陽一
URL: https://www.st.keio.ac.jp/education/learning/2007.html
News (2021 January 25th)
2021年応⽤物理学会春季講演会にて以下を報告します.
https://confit.atlas.jp/guide/event/jsap2021s/subject/18a-Z33-6/tables?cryptoId=
Oral 3/18(木) 10:30 10:45 18a-Z33-6 C000016
複合アニオン層状化合物LaCu1-δS0.5Se0.5O (δ=0-0.02)多結晶の絶縁体-縮退半導体-絶縁体転移
〇神原 陽⼀1, 3, 東 伸彦1, 坂上 良介1, 臼井 秀知2 1.慶大物情, 2.島根大総合理⼯, 3.慶大 スピンセンター