Low-energy μsR Study on the Tetradymite Topological Insulator Bi1.5Sb0.5TeSe2

Takayuki Goto; Kazuki Matsui; Tadashi Adachi; Tomi Ohtsuki; Ngoc Han Tu; Yoichi Tanabe; Katsumi Tanigaki; Isao Watanabe; Zaher Salman; Andreas Suter; Thomas Prokscha

doi:10.1016/j.phpro.2015.12.014

Low-energy μsR Study on the Tetradymite Topological Insulator Bi_1.5Sb_0.5TeSe₂

Takayuki Goto, Kazuki Matsui, Tadashi Adachi, Tomi Ohtsuki, Ngoc Han Tu, Yoichi Tanabe, Katsumi Tanigaki, Isao Watanabe, Zaher Salman, Andreas Suter, Thomas Prokscha

Research output: Contribution to journal › Conference article › peer-review

Abstract

A new method utilizing the low energy muon spin rotation (μSR) technique to investigate the spin structure within the surface layer of topological insulator has been proposed. In order to detect the spin polarization parallel with the surface, one applies a weak field B_par, which, by breaking the time reversal symmetry, is expected to induce a net magnetization perpendicular the surface. This will affect the profile of muon spin depolarization spectra. Preliminary measurements on the topological insulator Bi_1.5Sb_0.5TeSe₂ with tetradymite structure are also shown.

Original language	English
Pages (from-to)	100-105
Number of pages	6
Journal	Physics Procedia
Volume	75
DOIs	https://doi.org/10.1016/j.phpro.2015.12.014
Publication status	Published - 2015
Event	20th International Conference on Magnetism, ICM 2015 - Barcelona, Spain Duration: 2015 Jul 5 → 2015 Jul 10

Keywords

Topological insulator
muSR
spin-locking

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1016/j.phpro.2015.12.014

Cite this

Low-energy μsR Study on the Tetradymite Topological Insulator Bi_1.5Sb_0.5TeSe₂. / Goto, Takayuki; Matsui, Kazuki; Adachi, Tadashi; Ohtsuki, Tomi; Tu, Ngoc Han; Tanabe, Yoichi; Tanigaki, Katsumi; Watanabe, Isao; Salman, Zaher; Suter, Andreas; Prokscha, Thomas.

In: Physics Procedia, Vol. 75, 2015, p. 100-105.

Research output: Contribution to journal › Conference article › peer-review

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title = "Low-energy μsR Study on the Tetradymite Topological Insulator Bi1.5Sb0.5TeSe2",

abstract = "A new method utilizing the low energy muon spin rotation (μSR) technique to investigate the spin structure within the surface layer of topological insulator has been proposed. In order to detect the spin polarization parallel with the surface, one applies a weak field Bpar, which, by breaking the time reversal symmetry, is expected to induce a net magnetization perpendicular the surface. This will affect the profile of muon spin depolarization spectra. Preliminary measurements on the topological insulator Bi1.5Sb0.5TeSe2 with tetradymite structure are also shown.",

keywords = "Topological insulator, muSR, spin-locking",

author = "Takayuki Goto and Kazuki Matsui and Tadashi Adachi and Tomi Ohtsuki and Tu, {Ngoc Han} and Yoichi Tanabe and Katsumi Tanigaki and Isao Watanabe and Zaher Salman and Andreas Suter and Thomas Prokscha",

note = "Funding Information: This work was partly supported by JSPS KAKENHI Grant Number 26108713, 15K05148 and 15H03700. It was also supported by the Sophia University Special Grant for Academic Research. The PSR measurements were performed at the Swiss Muon Source SPS at the Paul Scherrer Institut, Villigen, Switzerland. The authors are grateful for the kind and valuable discussion with prof. Kenji Kojima at KEK. Publisher Copyright: {\textcopyright} 2015 The Authors. Published by Elsevier B.V.; 20th International Conference on Magnetism, ICM 2015 ; Conference date: 05-07-2015 Through 10-07-2015",

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doi = "10.1016/j.phpro.2015.12.014",

language = "English",

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T1 - Low-energy μsR Study on the Tetradymite Topological Insulator Bi1.5Sb0.5TeSe2

AU - Goto, Takayuki

AU - Matsui, Kazuki

AU - Adachi, Tadashi

AU - Ohtsuki, Tomi

AU - Tu, Ngoc Han

AU - Tanabe, Yoichi

AU - Tanigaki, Katsumi

AU - Watanabe, Isao

AU - Salman, Zaher

AU - Suter, Andreas

AU - Prokscha, Thomas

N1 - Funding Information: This work was partly supported by JSPS KAKENHI Grant Number 26108713, 15K05148 and 15H03700. It was also supported by the Sophia University Special Grant for Academic Research. The PSR measurements were performed at the Swiss Muon Source SPS at the Paul Scherrer Institut, Villigen, Switzerland. The authors are grateful for the kind and valuable discussion with prof. Kenji Kojima at KEK. Publisher Copyright: © 2015 The Authors. Published by Elsevier B.V.

PY - 2015

Y1 - 2015

N2 - A new method utilizing the low energy muon spin rotation (μSR) technique to investigate the spin structure within the surface layer of topological insulator has been proposed. In order to detect the spin polarization parallel with the surface, one applies a weak field Bpar, which, by breaking the time reversal symmetry, is expected to induce a net magnetization perpendicular the surface. This will affect the profile of muon spin depolarization spectra. Preliminary measurements on the topological insulator Bi1.5Sb0.5TeSe2 with tetradymite structure are also shown.

AB - A new method utilizing the low energy muon spin rotation (μSR) technique to investigate the spin structure within the surface layer of topological insulator has been proposed. In order to detect the spin polarization parallel with the surface, one applies a weak field Bpar, which, by breaking the time reversal symmetry, is expected to induce a net magnetization perpendicular the surface. This will affect the profile of muon spin depolarization spectra. Preliminary measurements on the topological insulator Bi1.5Sb0.5TeSe2 with tetradymite structure are also shown.

KW - Topological insulator

KW - muSR

KW - spin-locking

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