论文类型：期刊论文
第一作者：Wan-Dong Kong
通讯作者：Hong Ding,Tian Qian
合写作者：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
发表刊物：Chinese Physics Letters
收录刊物：SCI
学科门类：物理学
文献类型：J
卷号：32
期号：7
页面范围：077402
ISSN号：0256-307X
发表时间：2015-07-01
影响因子：0.875
摘要：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.
发布期刊链接：https://iopscience.iop.org/article/10.1088/0256-307X/32/7/077402/meta