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Patent Searching and Data


Title:
METHOD AND DEVICE FOR EVALUATING TOPOLOGICAL INSULATION FROM SOLID SPIN CHARACTERISTICS
Document Type and Number:
WIPO Patent Application WO/2018/042971
Kind Code:
A1
Abstract:
In the present invention, a femtosecond pulsed laser 4 is irradiated onto the surface of a solid sample 8 of a topological insulator as excitation light while the polarization state is changed through the rotation of a quarter-wave plate 6; a reverse Faraday effect or reverse Cotton-Mouton effect is induced on the surface of the solid sample 8; through the measurement of the quarter-wave-plate-angle dependency resulting from the effect, localized spin states on the surface of the solid sample 8 and surface band states are evaluated for a topological insulator, or the like; and topological insulation is evaluated.

Inventors:
HASE Muneaki (1-1-1 Tennodai, Tsukuba-sh, Ibaraki 77, 〒3058577, JP)
MONDAL Richarj (1-1-1 Tennodai, Tsukuba-sh, Ibaraki 77, 〒3058577, JP)
AIHARA Yuki (1-1-1 Tennodai, Tsukuba-sh, Ibaraki 77, 〒3058577, JP)
SAITO Yuta (Tsukuba Central 5 1-1, Higashi 1-chome, Tsukuba-sh, Ibaraki 65, 〒3058565, JP)
TOMINAGA Junji (Tsukuba Central 5 1-1, Higashi 1-chome, Tsukuba-sh, Ibaraki 65, 〒3058565, JP)
Application Number:
JP2017/027375
Publication Date:
March 08, 2018
Filing Date:
July 28, 2017
Export Citation:
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Assignee:
UNIVERSITY OF TSUKUBA (1-1-1, Tennodai Tsukuba-sh, Ibaraki 77, 〒3058577, JP)
NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY (3-1 Kasumigaseki 1-chome, Chiyoda-ku Tokyo, 21, 〒1008921, JP)
International Classes:
G01N21/21; G01R15/24
Attorney, Agent or Firm:
MITSUDA Atsushi (29-19, Hitachinonishi 2-chome Ushiku-sh, Ibaraki 06, 〒3001206, JP)
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