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Theory of topological spin current in noncentrosymmetric superconductors
Open accessAbstract
We study the spin transport properties of the noncentrosymmetric superconductor with time-reversal symmetry where spin-triplet $({p}_{x}\ifmmode\pm\else\textpm\fi{}i{p}_{y})$-wave and spin-singlet $s$-wave pair potentials can mix with each other. We show that when the amplitude of the $({p}_{x}\ifmmode\pm\else\textpm\fi{}i{p}_{y})$-wave pair potential is larger than that of $s$-wave one, the superconducting state belongs to the topologically nontrivial class analogous to the quantum spin Hall system, and the resulting helical edge modes as Andreev bound states are topologically protected. We find that the incident angle dependent spin polarized current flows through the interface due to the presence of the helical edge modes. With a weak magnetic field, also the angle-integrated current is strongly spin polarized.
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Cites
Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
Bernevig, B. A., Hughes, T. L., & Zhang, S.-C. (2006) · Science · doi:10.1126/science.1133734 · Cited by 7,090
Quantized Hall Conductance in a Two-Dimensional Periodic Potential
Thouless, D. J., Kohmoto, M., Nightingale, M. P., & den Nijs, M. (1982) · Physical Review Letters · doi:10.1103/physrevlett.49.405 · Cited by 6,973
Z 2 Topological Order and the Quantum Spin Hall Effect
Kane, C. L., & Mele, E. J. (2005) · Physical Review Letters · doi:10.1103/physrevlett.95.146802 · Cited by 6,460
Quantum Spin Hall Insulator State in HgTe Quantum Wells
König, M., Wiedmann, S., Brüne, C., Roth, A., Buhmann, H., Molenkamp, L. W., Qi, X.-L., & Zhang, S.-C. (2007) · Science · doi:10.1126/science.1148047 · Cited by 6,151
Topological insulators with inversion symmetry
Fu, L., & Kane, C. L. (2007) · Physical Review B · doi:10.1103/physrevb.76.045302 · Cited by 4,252
(2003) · doi:10.1103/physrevlett.92.027003 · Cited by 1,080
Cited by
Majorana fermions in a tunable semiconductor device
Alicea, J. (2010) · Physical Review B · doi:10.1103/physrevb.81.125318 · Cited by 1,205
Sato, M., & Fujimoto, S. (2009) · Physical Review B · doi:10.1103/physrevb.79.094504 · Cited by 597
Topology of crystalline insulators and superconductors
Shiozaki, K., & Sato, M. (2014) · Physical Review B · doi:10.1103/physrevb.90.165114 · Cited by 507
Emergence of non-centrosymmetric topological insulating phase in BiTeI under pressure
Bahramy, M. S., Yang, B.-J., Arita, R., & Nagaosa, N. (2012) · Nature Communications · doi:10.1038/ncomms1679 · Cited by 262
Self-citationTopological surface states in nodal superconductors
Schnyder, A. P., & Brydon, P. M. R. (2015) · Journal of Physics: Condensed Matter · doi:10.1088/0953-8984/27/24/243201 · Cited by 176
Metadata
- Authors
- Tanaka, Y., Yokoyama, T., Balatsky, A. V., & Nagaosa, N.
- Venue
- Physical Review B
- Publisher
- American Physical Society (APS)
- Published
- 2009-02-10
- Volume
- 79
- Issue
- 6
- ISSN
- 1098-0121 (ISSN-L)
- 1550-235X
- OpenAlex
- W1581343071
- Cited by
- 219
- References
- 6
- FWCI
- 11.90
- Type
- journal article
- Language
- en
- Open access
- green
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