Majorana fermion states and fractional flux periodicity in mesoscopic d-wave superconducting loops with spin-orbit interaction
Guo-Qiao Zha, Lucian Covaci, F. M. Peeters, Shi-Ping Zhou
DOI 10.1103/PhysRevB.90.014522 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We numerically investigate the spin-orbit (SO) coupling effect on the magnetic flux evolution of energy and supercurrent in mesoscopic d-wave superconducting loops by solving the spin-generalized Bogoliubov–de Gennes equations self-consistently. It is found that the energy spectrum splits when the SO interaction is involved and the Majorana zero mode can be realized in the [100] edges of square systems for an appropriate SO coupling strength. Superconducting phase transitions appear when the energy gap closes, accompanied by energy jumps between different energy parabolas in the ground state, which provides a possible mechanism to support fractional flux periodicity of supercurrent. Moreover, in the case of rectangular loops with SO coupling, the jumps of the ground-state energy gradually disappear by increasing the ratio of length to height of the sample, and a paramagnetic response with opposite direction of the screening current around zero flux value can occur in such systems.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Sr2RuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Majorana Bound States and Nonlocal Spin Correlations in a Quantum Wire on an Unconventional Superconductor
similarity 0.98Sho Nakosai et al.
Source status unknown — claims are unverified
Understanding Majorana braiding in superconductors with a fixed total number of particles
similarity 0.97Ivar Martin & Kartiek Agarwal
Source status unknown — claims are unverified
Topological indices, defects, and Majorana fermions in chiral superconductors
similarity 0.97Daichi Asahi & Naoto Nagaosa
Source status unknown — claims are unverified
Topological phase transitions in small mesoscopic chiral p-wave superconductors
similarity 0.96L.-F. Zhang et al.
Source status unknown — claims are unverified
Electronic properties of emergent topological defects in chiral p-wave superconductivity
similarity 0.96L.-F. Zhang et al.
Source status unknown — claims are unverified
Symmetry analysis of odd- and even-frequency superconducting gap symmetries for time-reversal symmetric interactions
similarity 0.96R. Matthias Geilhufe & Alexander V. Balatsky
Source status unknown — claims are unverified