TY - JOUR
T1 - Symmetry-Protected Topological Metals
AU - Ying, Xuzhe
AU - Kamenev, Alex
N1 - Publisher Copyright:
© 2018 American Physical Society.
PY - 2018/8/24
Y1 - 2018/8/24
N2 - We show that sharply defined topological quantum phase transitions are not limited to states of matter with gapped electronic spectra. Such transitions may also occur between two gapless metallic states both with extended Fermi surfaces. The transition is characterized by a discontinuous, but not quantized, jump in an off-diagonal transport coefficient. Its sharpness is protected by a symmetry, such as, e.g., particle-hole symmetry, which remains unbroken across the transition. We present a simple model of this phenomenon, based on 2D p+ip superconductor with an applied supercurrent, and discuss its geometrical interpretation.
AB - We show that sharply defined topological quantum phase transitions are not limited to states of matter with gapped electronic spectra. Such transitions may also occur between two gapless metallic states both with extended Fermi surfaces. The transition is characterized by a discontinuous, but not quantized, jump in an off-diagonal transport coefficient. Its sharpness is protected by a symmetry, such as, e.g., particle-hole symmetry, which remains unbroken across the transition. We present a simple model of this phenomenon, based on 2D p+ip superconductor with an applied supercurrent, and discuss its geometrical interpretation.
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U2 - 10.1103/PhysRevLett.121.086810
DO - 10.1103/PhysRevLett.121.086810
M3 - Article
C2 - 30192629
AN - SCOPUS:85052195936
SN - 0031-9007
VL - 121
JO - Physical review letters
JF - Physical review letters
IS - 8
M1 - 086810
ER -