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Two types of Dirac-cone surface states on the (111) surface of the topological crystalline insulator SnTe (CROSBI ID 284457)

Prilog u časopisu | ostalo | međunarodna recenzija

Tanaka, Y. ; Shoman, T. ; Nakayama, K. ; Souma, S. ; Sato, T. ; Takahashi, T. ; Novak, M. ; Segawa, Kouji ; Ando, Yoichi Two types of Dirac-cone surface states on the (111) surface of the topological crystalline insulator SnTe // Physical review. B, Condensed matter and materials physics, 88 (2013), 23; 235126, 5. doi: 10.1103/physrevb.88.235126

Podaci o odgovornosti

Tanaka, Y. ; Shoman, T. ; Nakayama, K. ; Souma, S. ; Sato, T. ; Takahashi, T. ; Novak, M. ; Segawa, Kouji ; Ando, Yoichi

engleski

Two types of Dirac-cone surface states on the (111) surface of the topological crystalline insulator SnTe

We have performed angle-resolved photoemission spectroscopy (ARPES) on the (111) surface of the topological crystalline insulator SnTe. Distinct from a pair of Dirac-cone surface states across the ¯¯¯ X point of the surface Brillouin zone on the (001) surface, we revealed two types of Dirac- cone surface states each centered at the ¯¯¯ Γ and ¯¯¯¯ M points, which originate from the bulk-band inversion at the L points. We also found that the energy location of the Dirac point and the Dirac velocity are different from each other. This ARPES experiment demonstrates the surface states on different crystal faces of a topological material, and it elucidates how mirror- symmetry-protected Dirac cones of a topological crystalline insulator show up on surfaces with different symmetries.

ARPES

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

Podaci o izdanju

88 (23)

2013.

235126

5

objavljeno

1098-0121

10.1103/physrevb.88.235126

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