Observation of Fermi Arcs in Non-Centrosymmetric Weyl Semi-Metal Candidate NbP

• 来源期刊: 中国物理快报（英文版）
• 关键词: @@
• 年，卷（期）: 2015,（10）
• 页码范围: 93-97
• 页数: 5页
• 语种: 中文
• DOI: 10.1088/0256-307X/32/10/107101

摘要

We report the surface electronic structure of niobium phosphide NbP single crystal on (001) surface by vacuum ultraviolet angle-resolved photoemission spectroscopy.Combining with our first principle calculations,we identify the existence of the Fermi arcs originated from topological surface states.Furthermore,the surface states exhibit circular dichroism pattern,which may correlate with its non-trivial spin texture.Our results provide critical evidence for the existence of the Weyl Fermions in NbP,which lays the foundation for further research.