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29 March 2024 |
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Quasiparticle Interference on the Surface of Topological Crystalline Insulator Pb(1-x)Sn(x)Se | A. Gyenis
; I. K. Drozdov
; S. Nadj-Perge
; O. B. Jeong
; J. Seo
; I. Pletikosic
; T. Valla
; G. D. Gu
; A. Yazdani
; | Date: |
1 Jun 2013 | Abstract: | 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(x)Se in the topologically non-trivial
(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 well 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. | Source: | arXiv, 1306.0043 | Services: | Forum | Review | PDF | Favorites |
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