Observation of Fermi arc surface states in a topological metal-Reference-Cited by-同舟云学术

Observation of Fermi arc surface states in a topological metal

Published:2015-01-16 Issue:6219 Volume:347 Page:294-298
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Xu Su-Yang¹²,Liu Chang¹,Kushwaha Satya K.³,Sankar Raman⁴,Krizan Jason W.³,Belopolski Ilya¹,Neupane Madhab¹,Bian Guang¹,Alidoust Nasser¹,Chang Tay-Rong⁵,Jeng Horng-Tay⁵⁶,Huang Cheng-Yi⁷,Tsai Wei-Feng⁷,Lin Hsin⁸,Shibayev Pavel P.¹,Chou Fang-Cheng⁴⁹,Cava Robert J.³,Hasan M. Zahid¹²

Affiliation:

1. Joseph Henry Laboratory, Department of Physics, Princeton University, Princeton, NJ 08544, USA.

2. Princeton Center for Complex Materials, Princeton Institute for Science and Technology of Materials, Princeton University, Princeton, NJ 08544, USA.

3. Department of Chemistry, Princeton University, Princeton, NJ 08544, USA.

4. Center for Condensed Matter Sciences, National Taiwan University, Taipei 10617, Taiwan.

5. Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan.

6. Institute of Physics, Academia Sinica, Taipei 11529, Taiwan.

7. Department of Physics, National Sun Yat-Sen University, Kaohsiung 804, Taiwan.

8. Graphene Research Centre and Department of Physics, National University of Singapore 117542.

9. National Synchrotron Radiation Research Center, Taiwan.

Abstract

Nailing down the topology of a semimetal 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. Science , this issue p. 294

Funder

U.S. Department of Energy

Army Research Office

Ministry of Science and Technology

Singapore National Research Foundation

National Science Council, Taiwan

National Center for High-Performance Computing, Taiwan

Computer and Information Network Center-National Taiwan University, Taiwan

National Center for Theoretical Sciences, Taiwan

MOST-Taiwan

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference31 articles.

1. A. M. Turner A. Vishwanath Beyond band insulators: Topology of semi-metals and interacting phases http://arxiv.org/abs/1301.0330 (2013).

2. Classification of stable three-dimensional Dirac semimetals with nontrivial topology

3. M. Z. Hasan S.-Y. Xu M. Neupane Topological insulators topological crystalline insulators and topological dirac semimetals http://arxiv.org/abs/1406.1040 (2014).

4. F. D. M. Haldane Attachment of surface “Fermi arc” to the bulk fermi surface: “Fermi-level plumbing” in topological metals http://arxiv.org/abs/1401.0529 (2014).

5. Quantum oscillations from surface Fermi arcs in Weyl and Dirac semimetals

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