2013/07/31 by Pallab Goswami, Bitan Roy · 1 citation
Physics and Astronomy · #Bound state #Condensed matter physics #Coupling (piping) #Doping #Fermion #MAJORANA #Materials science #Parity (physics) #Physics #Quantum and electron transport phenomena #Quantum many-body systems #Quantum mechanics #Superconductivity #Topological Materials and Phenomena #cond-mat.mes-hall #cond-mat.str-el #cond-mat.supr-con #hep-th #quant-ph
paper · pdf · doi:10.1103/physrevb.90.041301
published as Phys. Rev. B 90, 041301(R), 2014 · 6 pages, 2 figures, replaced by the version published by Phys Rev B
openalex publication_date 2014/07/11 · arxiv created 2014/08/07 · arxiv updated 2014/08/08 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We consider the competition between the conventional s-wave and the triplet Balian-Werthamer or the B-phase pairings in doped three-dimensional narrow-gap semiconductors, such as CuxBi2Se3 and Sn_1\ensuremath-xInxTe. When the coupling constants of the two contending channels are comparable, we find a simultaneously time-reversal and parity violating p+is state at low temperatures, which provides an example of a dynamic axionic state of matter. In contradistinction to the time-reversal invariant, topological B phase, the p+is state possesses gapped Majorana fermions as surface Andreev bound states, which give rise to an anomalous surface thermal Hall effect. The anomalous gravitational and electrodynamic responses of the p+is state can be described by the \ensuremathθ vacuum structure, where \ensuremathθ\ensuremath≠0 or \ensuremathπ.