TY - JOUR
T1 - Single-dirac-cone topological surface states in the TlBiSe2 class of topological semiconductors
AU - Lin, Hsin
AU - Markiewicz, R. S.
AU - Wray, L. A.
AU - Fu, L.
AU - Hasan, M. Z.
AU - Bansil, A.
PY - 2010/7/16
Y1 - 2010/7/16
N2 - We investigate several strong spin-orbit coupling ternary chalcogenides related to the (Pb,Sn)Te series of compounds. Our first-principles calculations predict the low-temperature rhombohedral ordered phase in TlBiTe2, TlBiSe2, and TlSbX2 (X=Te, Se, S) to be topologically nontrivial. We identify the specific surface termination that realizes the single Dirac cone through first-principles surface state computations. This termination minimizes effects of dangling bonds, making it favorable for photoemission experiments. In addition, our analysis predicts that thin films of these materials could harbor novel 2D quantum spin Hall states, and support odd-parity topological superconductivity.
AB - We investigate several strong spin-orbit coupling ternary chalcogenides related to the (Pb,Sn)Te series of compounds. Our first-principles calculations predict the low-temperature rhombohedral ordered phase in TlBiTe2, TlBiSe2, and TlSbX2 (X=Te, Se, S) to be topologically nontrivial. We identify the specific surface termination that realizes the single Dirac cone through first-principles surface state computations. This termination minimizes effects of dangling bonds, making it favorable for photoemission experiments. In addition, our analysis predicts that thin films of these materials could harbor novel 2D quantum spin Hall states, and support odd-parity topological superconductivity.
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U2 - 10.1103/PhysRevLett.105.036404
DO - 10.1103/PhysRevLett.105.036404
M3 - Article
C2 - 20867784
AN - SCOPUS:77954793457
SN - 0031-9007
VL - 105
JO - Physical review letters
JF - Physical review letters
IS - 3
M1 - 036404
ER -