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Quasiparticle interference on the surface of the topological crystalline insulator Pb_(1−x)Sn_xSe

Gyenis, A. and Drozdov, I. K. and Nadj-Perge, S. and Jeong, O. B. and Seo, J. and Pletikosić, I. and Valla, T. and Gu, G. D. and Yazdani, A. (2013) Quasiparticle interference on the surface of the topological crystalline insulator Pb_(1−x)Sn_xSe. Physical Review B, 88 (12). Art. No. 125414. ISSN 1098-0121.

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Topological crystalline insulators represent a novel topological phase of matter in which the surface states are protected by discrete point group symmetries of the underlying lattice. Rock-salt lead-tin-selenide alloy is one possible realization of this phase, which undergoes a topological phase transition upon changing the lead content. We used scanning tunneling microscopy (STM) and angle resolved photoemission spectroscopy (ARPES) to probe the surface states on (001) Pb_(1−x)Sn_xSe in the topologically nontrivial (x=0.23) and topologically trivial (x=0) phases. We observed quasiparticle interference with STM on the surface of the topological crystalline insulator and demonstrated that the measured interference can be understood from ARPES studies and a simple band structure model. Furthermore, our findings support the fact that Pb_(0.77)Sn_(0.23)Se and PbSe have different topological nature.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Drozdov, I. K.0000-0002-8185-1194
Nadj-Perge, S.0000-0002-2916-360X
Seo, J.0000-0002-0442-288X
Additional Information:© 2013 American Physical Society. Received 31 May 2013; published 9 September 2013. We thank B. Andrei Bernevig and Chen Fang for the discussions. The work at Princeton University was supported by NSF-DMR1104612, NSF-MRSEC programs through the Princeton Center for Complex Materials (DMR-0819860), DARPA-SPAWAR grant N6601-11-1-4110, and ARO MURI program, grant W911NF-12-1-0461. The work at Brookhaven National Lab is supported by US Department of Energy, Office of Basic Energy Sciences, under Contract No. DE-AC02-98CH10886. S. N.-P. acknowledges support of the European Community under a Marie Curie OEF fellowship.
Funding AgencyGrant Number
Office of Naval Research (ONR)N6601-11-1-4110
Army Research Office (ARO)W911NF-12-1-0461
Department of Energy (DOE)DE-AC02-98CH10886
Marie Curie FellowshipUNSPECIFIED
Defense Advanced Research Projects Agency (DARPA)UNSPECIFIED
Issue or Number:12
Classification Code:PACS number(s): 73.20.At
Record Number:CaltechAUTHORS:20160113-070931212
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Official Citation:Quasiparticle interference on the surface of the topological crystalline insulator Pb1−xSnxSe A. Gyenis, I. K. Drozdov, S. Nadj-Perge, O. B. Jeong, J. Seo, I. Pletikosić, T. Valla, G. D. Gu, and A. Yazdani Phys. Rev. B 88, 125414 (2013) – Published 9 September 2013
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:63611
Deposited By: Ruth Sustaita
Deposited On:13 Jan 2016 17:24
Last Modified:03 Oct 2019 09:30

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