Exploration of Novel Topological Insulators
Project/Area Number |
24340078
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Partial Multi-year Fund |
Section | 一般 |
Research Field |
Condensed matter physics II
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Research Institution | Tokyo Institute of Technology |
Principal Investigator |
SASAGAWA Takao 東京工業大学, 応用セラミックス研究所, 准教授 (30332597)
|
Project Period (FY) |
2012-04-01 – 2015-03-31
|
Project Status |
Completed (Fiscal Year 2014)
|
Budget Amount *help |
¥19,630,000 (Direct Cost: ¥15,100,000、Indirect Cost: ¥4,530,000)
Fiscal Year 2014: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2013: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
Fiscal Year 2012: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
|
Keywords | トポロジカル絶縁体 / 単結晶 / 第一原理計算 / 量子構造観察 / 物質開拓 |
Outline of Final Research Achievements |
Because of the excellent electronic conduction resulting from massless Dirac fermions, Graphene is a promising candidate material for next generation (post-silicon) electronic devices. As a beyond-Graphene technology, we tried to develop both new compounds and novel electronic functionality within a new class of materials called "topological insulators". Highlights of this work are as follows: (1) A "polar" topological insulator was for the first time materialized, which could make topological electronic devices quite simple [Nature Physics]. (2) Unlike Graphene, the massless Dirac fermions in the topological insulators were proved to be quite stable against the imperfection of the materials. It was further demonstrated that the Dirac surface state and associated spin distribution could be locally (in nano-scale) manipulated by the bias voltage and magnetic field [ACS Nano, Nature Physics].
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Report
(4 results)
Research Products
(81 results)
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[Journal Article] A Single Surface Dirac Fermion Induced in BiTeCl-based Heterostructures2015
Author(s)
H. Zhang, Z. Liu, B. Zhou, M. Kanou, J. Sobota, D. Leuenberger, S. Yang, P. Kirchmann, S.-K. Mo, Z.-X. Shen, Z. Hussain, T. Sasagawa, and Yulin Chen
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Journal Title
Scientific Report
Volume: 印刷中
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Journal Article] Electronic Structure of a Quasi-Freestanding MoS2 Monolayer2014
Author(s)
T. Eknapakul, P. D. C. King, M. Asakawa, P. Buaphet, R.-H. He, S.-K. Mo, H. Takagi, K. M. Shen, F. Baumberger, T. Sasagawa, S. Jungthawan, and W. Meevasana
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Journal Title
Nano Letters
Volume: 14
Issue: 3
Pages: 1312-1216
DOI
Related Report
Peer Reviewed
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[Journal Article] Discovery of a Single Topological Dirac Fermion in a Strong Inversion Asymmetric Compound BiTeCl2013
Author(s)
Y. L. Chen, M. Kanou, Z. K. Liu, H. J. Zhang, J. A. Sobota, D. Leuenberger, S. K. Mo, B. Zhou, S.-L. Yang, P. S. Kirchmann, D. H. Lu, R. G. Moore, Z. Hussain, Z. X. Shen, X. L. Qi, and T. Sasagawa
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Journal Title
Nature Physics
Volume: 9
Issue: 11
Pages: 704-708
DOI
Related Report
Peer Reviewed
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[Journal Article] Ultrafast Charge Localization in a Stripe-phase Nickelate2013
Author(s)
G. Coslovich, B. Huber, W. -S. Lee, Y. -D. Chuang, Y. Zhu, T. Sasagawa, Z. Hussain, H. A. Bechtel, M. C. Martin, Z. -X. Shen, R. W. Schoenlein, and R. A. Kaindl
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Journal Title
Nature Communications
Volume: 4
Issue: 1
DOI
Related Report
Peer Reviewed
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[Journal Article] Absence of superconductivity in the “hole-doped” Fe pnictide Ba(Fe1-xMnx)2As2: Photoemission and x-ray absorption spectroscopy studies2013
Author(s)
H. Suzuki, T. Yoshida, S. Ideta, G. Shibata, K. Ishigami, T. Kadono, A. Fujimori, M. Hashimoto, D. H. Lu, Z.-X. Shen, K. Ono, E. Sakai, H. Kumigashira, M. Matsuo, and T. Sasagawa,
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Journal Title
Phys. Rev. B
Volume: 88
Issue: 10
DOI
Related Report
Peer Reviewed
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[Presentation] Exploration of Strongly Spin-Orbit-Coupled Electron Systems2013
Author(s)
T. Sasagawa, M. Kanou, K. Igarashi, M. Murase, Y. Chen, and Z.-X. Shen
Organizer
International Symposium on EcoTopia Science 2013 and The 4th International Symposium on Advanced Materials Development and Integration of Novel Structured Metallic and Inorganic Materials
Place of Presentation
Nagoya, Japan
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