Topological Superconductivity in CuxBi2Se3

Details Topological Superconductivity in CuxBi2Se3 Topological Superconductivity in CuxBi2Se3

2011-08-04

arxiv.org/abs/1108.1101v2

Phys. Rev. Lett. 107, 217001 (2011)

Physics

Condensed Matter

Superconductivity

5 pages, 4 figures (paper proper) + 10 pages, 10 figures (supplemental material); final version accepted for publication in PR

Scientific paper

10.1103/PhysRevLett.107.217001

A topological superconductor (TSC) is characterized by the topologically-protected gapless surface state that is essentially an Andreev bound state consisting of Majorana fermions. While a TSC has not yet been discovered, the doped topological insulator CuxBi2Se3, which superconducts below ~3 K, has been predicted to possess a topological superconducting state. We report that the point-contact spectra on the cleaved surface of superconducting CuxBi2Se3 present a zero-bias conductance peak (ZBCP) which signifies unconventional superconductivity. Theoretical considerations of all possible superconducting states help us conclude that this ZBCP is due to Majorana Fermions and gives evidence for a topological superconductivity in CuxBi2Se3. In addition, we found an unusual pseudogap that develops below ~20 K and coexists with the topological superconducting state.

Affiliated with

Also associated with

No associations

Rating

Topological Superconductivity in CuxBi2Se3 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Topological Superconductivity in CuxBi2Se3, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Topological Superconductivity in CuxBi2Se3 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-14577