2014 Fiscal Year Final Research Report
Theory of topological condensed matter system
| Project Area | Topological Quantum Phenomena in Condensed Matter with Broken Symmetries |
|---|
| Project/Area Number |
22103005
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
|
| Allocation Type | Single-year Grants |
|---|
| Review Section |
Science and Engineering
|
|---|
| Research Institution | Nagoya University |
|---|
Principal Investigator |
TANAKA Yukio 名古屋大学, 工学研究科, 教授 (40212039)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
SATO Masatoshi 名古屋大学, 工学研究科, 准教授 (30313117)
UEDA Masahito 東京大学, 理学系研究科, 教授 (70271070)
MIZUSHIMA Takeshi 大阪大学, 基礎工学研究科, 准教授 (50379707)
|
|---|
| Co-Investigator(Renkei-kenkyūsha) |
KAWAKAMI Norio 京都大学, 理学研究科, 教授 (10169683)
OSHIKAWA Masaki 東京大学, 物性研究所, 教授 (50262043)
OGUCHI Tamio 大阪大学, 産業科学研究所, 教授 (90253054)
KAWAGUCHI Yuki 東京大学, 工学系研究科, 講師 (00456261)
IMURA Kenichiro 広島大学, 工学研究科, 助教 (90391870)
|
|---|
| Project Period (FY) |
2010-04-01 – 2015-03-31
|
| Keywords | トポロジカル量子現象 / トポロジカル超伝導 / 冷却原子気体 / 奇周波数クーパー対 / トポロジカル絶縁体 / 超流動ﾍﾘｳﾑ３ |
|---|
| Outline of Final Research Achievements |
We have studied superconductivity, superfluid Helium 3 and cold atom from the view point of topological quantum phenomena. We have clarified the topological origin of surface Andreev bound state in unconventional superconductor and obtained the topological invariant in high Tc cuprate hosting flat band zero energy state. New type of twisted Andreev bound state has been predicted in doped topological insulator CuxBi2Se3 or doped topological crystal insulator InSnTe. In these materials, remaining surface state with strong spin momentum locking seriously influences on the surface state. It is also clarified that Majorana fermion always accompany odd-frequency pairing. Also, we have clarified new type of topological excitation in cold atom system. Overlooking our obtained various results in superconductivity, topological insulator, cold atom and superfluid helium, we can design new exotic system hosting topological edge state based on the concept of topology in condensed matter system.
|
| Free Research Field |
凝縮系物理理論
|
