Experimental Realization of a Three-dimensional Topological Insulator Phase in Ternary Chalcogenide TlBiSe₂

Overview

Journal Phys Rev Lett

Publisher American Physical Society

Specialty Biophysics

Date 2011 Jan 15

PMID 21230855

Citations 11

Authors

K Kuroda

M Ye

A Kimura

S V Eremeev

E E Krasovskii

E V Chulkov

Y Ueda

K Miyamoto

T Okuda

K Shimada

H Namatame

M Taniguchi

Affiliations

Soon will be listed here.

Abstract

We report the first observation of a topological surface state on the (111) surface of the ternary chalcogenide TlBiSe₂ by angle-resolved photoemission spectroscopy. By tuning the synchrotron radiation energy we reveal that it features an almost ideal Dirac cone with the Dirac point well isolated from bulk continuum states. This suggests that TlBiSe₂ is a promising material for realizing quantum topological transport.

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