TY - JOUR
T1 - Candidates for topological insulators
T2 - Pb-based chalcogenide series
AU - Jin, Hosub
AU - Song, Jung Hwan
AU - Freeman, Arthur J.
AU - Kanatzidis, Mercouri G.
PY - 2011/1/31
Y1 - 2011/1/31
N2 - We theoretically predict that the series of Pb-based layered chalcogenides, PbnBi2Sen+3and PbnSb 2Ten+3, are possible new candidates for topological insulators, and the topological phases are changed from a topological insulator to a band insulator with increasing n. Among the new topological insulators, we found a large bulk band gap of 0.40 eV in PbBi2Se4, and that of Pb2Sb2Te5 is located near the phase boundary between a trivial and a nontrivial topological insulator, which raises the possibility of tuning the topological phase by changing the external parameters.
AB - We theoretically predict that the series of Pb-based layered chalcogenides, PbnBi2Sen+3and PbnSb 2Ten+3, are possible new candidates for topological insulators, and the topological phases are changed from a topological insulator to a band insulator with increasing n. Among the new topological insulators, we found a large bulk band gap of 0.40 eV in PbBi2Se4, and that of Pb2Sb2Te5 is located near the phase boundary between a trivial and a nontrivial topological insulator, which raises the possibility of tuning the topological phase by changing the external parameters.
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U2 - 10.1103/PhysRevB.83.041202
DO - 10.1103/PhysRevB.83.041202
M3 - Article
AN - SCOPUS:79551651243
SN - 1098-0121
VL - 83
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 4
M1 - 041202
ER -