Observation of Fermi arc surface states in a topological metal
Abstract
Topological insulators are exotic materials that have a conducting surface state that can withstand certain types of material imperfection. Theoreticians have predicted a different kind of surface state in related three-dimensional topological Dirac semimetals, which do not have an energy gap in the band structure of the bulk. Xu et al. used photoemission spectroscopy to map out the band structure of the material Na 3 Bi and detected the predicted surface state. Their results may lead to further insights into the physics of topological matter.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jan 16, 2015
- Source ID
- 10.1126/science.1256742
Entities
People
- Chang Liu
- Cheng-yi Huang
- Fang-cheng Chou
- Guang Bian
- Horng-tay Jeng
- Hsin Lin
- Ilya Belopolski
- Jason W. Krizan
- M. Zahid Hasan
- Madhab Neupane
- Nasser Alidoust
- Pavel P. Shibayev
- Raman Sankar
- Robert Cava
- Satya K. Kushwaha
- Su-Yang Xu
- Tay-Rong Chang
- Wei-feng Tsai
Organizations
- Academia Sinica
- Army Research Office
- Ministry of Science and Technology
- National Center for theoretical Sciences
- National Research Foundation
- National Science and Technology Council
- National Sun Yat-sen University
- National Synchrotron Radiation Research Center
- National Tsing Hua University
- National University of Singapore
- Princeton University
- United States Department of Energy