Elucidation of the symmetry of superconducting gap of topological superconductor CuxBi2Se3 and other novel materials
| Project/Area Number |
24740237
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Condensed matter physics II
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| Research Institution | Osaka University |
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Principal Investigator |
SASAKI Satoshi 大阪大学, 産業科学研究所, 助教 (00540105)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2012: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | トポロジカル絶縁体ヘテロ構造物質 / 超伝導トポロジカル結晶絶縁体 / 超伝導トポロジカル絶縁体 / トポロジカル超格子絶縁体 / ポイントコンタクト分光 / トポロジカル超伝導体 / トポロジカル結晶絶縁体 |
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| Research Abstract |
Two new superconductors with time-reversal invariance similar to a superconducting topological insulator CuxBi2Se3 have been discovered: one of them is a superconducting In-doped topological crystalline insulator Sn1-xInxTe; the other is a superconductor Cux(PbSe)5(Bi2Se3)6 synthesized by intercalating Cu into a topological insulator heterostructure consisting of Bi2Se3 (topological insulator) and PbSe (ordinary insulator). The point-contact spectroscopy and specific heat measurements allowed us to elucidate the symmetry of the superconducting gaps in these materials. Based on the revealed properties we proposed Sn1-xInxTe and Cux(PbSe)5(Bi2Se3)6 as candidate materials that can build a platform for the study of topological superconductivity, contributing to the development of the relevant field.
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Report
(3 results)
Research Products
(40 results)
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[Presentation] レーザー励起型角度分解光電子分光で観察したカリウム蒸着により変化するトポロジカル絶縁体の表面電子状態2013
Author(s)
中島祐貴,近藤猛,石田行章, Walid Malaeb,渡部俊太郎, Cuangtian Chen, Markus Kriener,佐々木聡,瀬川耕司,安藤陽一,辛埴
Organizer
日本物理学会第68回年次大会
Place of Presentation
広島大学東広島キャンパス(広島県東広島市)
Year and Date
2013-03-28
Related Report
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