Induced superconductivity in the quantum spin Hall edge

Nature Physics

Volumn 10, Issue 9, 2014, Pages 638-643

  Hart, Sean ^a   Ren, Hechen ^a   Wagner, Timo ^a   Leubner, Philipp ^b   Mühlbauer, Mathias ^b   Brüne, Christoph ^b   Buhmann, Hartmut ^b   Molenkamp, Laurens W ^b   Yacoby, Amir ^a  

^a HARVARD UNIVERSITY   (United States)

^b UNIVERSITY OF WÜRZBURG   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

SEMICONDUCTOR QUANTUM WELLS; SPIN HALL EFFECT; SUPERCONDUCTING MATERIALS; TOPOLOGY;

BULK DENSITY; EDGE CHANNELS; FAULT-TOLERANT; MEASUREMENTS OF; QUANTUM SPIN HALL EFFECT; QUANTUM SPIN HALLS; SUPERCURRENTS; WELL WIDTH;

QUANTUM HALL EFFECT;

EID: 84905292408     PISSN: 17452473     EISSN: 17452481     Source Type: Journal    
DOI: 10.1038/NPHYS3036     Document Type: Article

References (31)

1. Hasan, M. Z. & Kane, C. L. Colloquium: Topological insulators. Rev.Mod. Phys. 82, 3045-3067 (2010).
2. Qi, X-L. & Zhang, S-C. Topological insulators and superconductors. Rev. Mod. Phys. 83, 1057-1110 (2011).
3. Kane, C. L. & Mele, E. J. Z2 topological order and the quantum spin Hall effect. Phys. Rev. Lett. 95, 146802 (2005).
4. Fu, L. & Kane, C. L. Superconducting proximity effect and majorana fermions at the surface of a topological insulator. Phys. Rev. Lett. 100, 096407 (2008).
5. Fu, L. & Kane, C. L. Josephson current and noise at a superconductor/quantum-spin-Hall-insulator/superconductor junction. Phys. Rev. B 79, 161408 (2009).
6. Nayak, C. et al. Non-abelian anyons and topological quantum computation. Rev. Mod. Phys. 80, 1083-1159 (2008).
7. Konig, M. et al. The quantum spin Hall effect: Theory and experiment. J. Phys. Soc. Jpn 77, 031007 (2008).
8. Moore, G. & Read, N. Nonabelions in the fractional quantum Hall effect. Nucl. Phys. B 360, 362-396 (1991).
9. Read, N. & Green, D. Paired states of fermions in two dimensions with breaking of parity and time-reversal symmetries and the fractional quantum Hall effect. Phys. Rev. B 61, 10267-10297 (2000).
10. Sau, J. D., Lutchyn, R. M., Tewari, S. & Sarma, S. D. Generic new platform for topological quantum computation using semiconductor heterostructures. Phys. Rev. Lett. 104, 040502 (2010).
11. Alicea, J. Majorana fermions in a tunable semiconductor device. Phys. Rev. B 81, 125318 (2010).
12. Kitaev, A. Y. Unpaired majorana fermions in quantum wires. Phys.-Usp. 44, 131-136 (2001).
13. Mourik, V. et al. Signatures of majorana fermions in hybrid superconductor-semiconductor nanowire devices. Science 336, 1003-1007 (2012).
14. Das, A. et al. Zero-bias peaks and splitting in Al-InAs nanowire topological superconductor as a signature of majorana fermions. Nature Phys. 8, 887-895 (2012).
15. Rokhinson, L. P., Liu, X. & Furdyna, J. K. The fractional a.c. Josephson effect in a semiconductorfisuperconductor nanowire as a signature of majorana particles. Nature Phys. 8, 795-799 (2012).
16. Lee, E. J. H. et al. Zero-bias anomaly in a nanowire quantum dot coupled to superconductors. Phys. Rev. Lett. 109, 186802 (2012).
17. Churchill, H. O. H. et al. Superconductor-nanowire devices from tunneling to the multichannel regime: Zero-bias oscillations and magnetoconductance crossover. Phys. Rev. B 87, 241401(R) (2013).
18. Finck, A. D. K. et al. Anomalous modulation of a zero-bias peak in a hybrid nanowire-superconductor device. Phys. Rev. Lett. 110, 126406 (2013).
19. Knez, I., Du, R-R. & Sullivan, G. Andreev reflection of helical edge modes in InAs/GaSb quantum spin Hall insulator. Phys. Rev. Lett. 109, 186603 (2012).
20. Bernevig, B. A. & Zhang, S-C. Quantum spin Hall effect. Phys. Rev. Lett. 96, 106802 (2006).
21. Bernevig, B. A., Zhang, S-C. & Hughes, T. L. Quantum spin Hall effect and topological phase transition in HgTe quantum wells. Science 314, 1757-1761 (2006).
22. Konig, M. et al. Quantum spin Hall insulator state in HgTe quantum wells. Science 318, 766-770 (2007).
23. Roth, A. et al. Nonlocal transport in the quantum spin Hall state. Science 325, 294-297 (2009).
24. Schmidt, T. L., Rachel, S., Oppen, F. v. & Glazman, L. I. Inelastic electron backscattering in a generic helical edge channel. Phys. Rev. Lett. 108, 156402 (2012).
25. Nowack, K. C. et al. Imaging currents in HgTe quantum wells in the quantum spin Hall regime. Nature Mater. 12, 787-791 (2013).
26. Tinkham, M. Introduction to Superconductivity (Dover Publications Inc., 2004).
27. Dynes, R. C. & Fulton, T. A. Supercurrent density distribution in Josephson junctions. Phys. Rev. B 3, 3015-3023 (1971).
28. Oostinga, J. B. et al. Josephson supercurrent through the topological surface states of strained bulk HgTe. Phys. Rev. X 3, 021007 (2013).
29. Sau, J. D. et al. Non-abelian quantum order in spin-orbit coupled semiconductors: Search for topological majorana particles in solid-state systems. Phys. Rev. B 82, 214509 (2010).
30. Jiang, L. et al. Unconventional Josephson signatures of majorana bound states. Phys. Rev. Lett. 107, 236401 (2011).
31. Mi, S. et al. Proposal for the detection and braiding of majorana fermions in a quantum spin Hall insulator. Phys. Rev. B 87, 241405(R) (2013).