CaltechAUTHORS
Published August 15, 2013 | Version Submitted + Published
Journal Article Open

Termination-dependent topological surface states of the natural superlattice phase Bi_4Se_3

Creators

  • 1. ROR icon Princeton University
  • 2. ROR icon Brookhaven National Laboratory
  • 3. ROR icon University of Missouri–Kansas City
  • 4. ROR icon Lawrence Berkeley National Laboratory

Abstract

We describe the topological surface states of Bi_4Se_3, a compound in the infinitely adaptive Bi_2-Bi_2Se_3 natural superlattice phase series, determined by a combination of experimental and theoretical methods. Two observable cleavage surfaces, terminating at Bi or Se, are characterized by angle-resolved photoelectron spectroscopy and scanning tunneling microscopy, and modeled by ab initio density functional theory calculations. Topological surface states are observed on both surfaces, but with markedly different dispersions and Kramers point energies. Bi_4Se_3 therefore represents the only known compound with different topological states on differently terminated, easily distinguished and stable surfaces.

Additional Information

© 2013 American Physical Society. Received 18 April 2013; published 30 August 2013. The authors acknowledge helpful discussions with B. A. Bernevig and F. Chen. The financial support of the National Science foundation, Grants No. NSF-DMR-0819860 and No. NSF-DMR-1104612, DARPA-SPAWAR Grant No. N6601-11-1-4110, and the ARO MURI program, Grant No. W911NF-12-1-0461, are gratefully acknowledged. The work at Brookhaven was carried out in part at the Center for Functional Nanomaterials and the National Synchrotron Light Source which are supported by the US Department of Energy (DOE), Office of Basic Energy Sciences, under Contract No. DE-AC02-98CH10886. The Advanced Light Source is supported by the US DOE, Office of Basic Energy Sciences, under Contract No.DE-AC02-05CH11231. One of the authors (S.N.-P.) acknowledges support of European Community through the Marie-Curie OEF fellowship.

Attached Files

Published - PhysRevB.88.081108.pdf

Submitted - 1305.3558v3.pdf

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1305.3558v3.pdf

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Additional details

Identifiers

Eprint ID
63623
Resolver ID
CaltechAUTHORS:20160113-085622977

Related works

Describes
http://arxiv.org/abs/1305.3558 (URL)

Funding

NSF
DMR-0819860
NSF
DMR-1104612
Office of Naval Research (ONR)
N6601-11-1-4110
Army Research Office (ARO)
W911NF-12-1-0461
Department of Energy (DOE)
DE-AC02-98CH10886
Department of Energy (DOE)
DE-AC02-05CH11231
Marie-Curie Fellowship
Defense Advanced Research Projects Agency (DARPA)

Dates

Created
2016-01-13
Created from EPrint's datestamp field
Updated
2023-03-15
Created from EPrint's last_modified field