Indexed by: Journal paper

First Author: Wan-Dong Kong

Correspondence Author: Hong Ding,Tian Qian

Co-author: Nan-Lin Wang,Pierre Richard,Xi Dai,Zhong Fang,Xun Shi,Peng Zhang,Yao-Bo Huang,Ai-Fang Fang,Gang Xu,Zhi-Jun Wang,Hu Miao

Journal: Chinese Physics Letters

Included Journals: SCI

Discipline: 物理学

Document Type: J

Volume: 32

Issue: 7

Page Number: 077402

ISSN No.: 0256-307X

Date of Publication: 2015-07-01

Impact Factor: 0.875

Abstract: Angle-resolved photoemission spectroscopy is performed to study the bulk and surface electronic structures of nonsuperconducting IrTe 2 and superconducting Pt 0.05 Ir 0.95 Te 2. In addition to the bulk electronic bands predicted by the local density approximation calculations, we observe two Dirac cone-like bands at the Brillouin zone center, which are non-dispersive along k z, suggesting that the extra bands are surface state bands. As the experimental results are well consistent with the ab initio calculations of surface states, the parity analysis proves that these surface state bands are topologically trivial and thus exclude (Pt x Ir 1− x) Te 2 as a possible topological superconductor candidate.

Links to published journals: https://iopscience.iop.org/article/10.1088/0256-307X/32/7/077402/meta