Vortex in Chiral Superconducting State

• Main Author: J. Goryo
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Published: 1999
• Subjects: IPY
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.241.7102; http://arxiv.org/pdf/cond-mat/9911082v1.pdf

We have investigated the vortex in chiral superconductors, especially in p-wave case. In chiral superconductors the Cooper pair has orbital angular momentum hence U(1), parity (P) and time reversal symmetry (T) are broken simultaneously. We have found that the vortex has fractional charge and fractional angular momentum which comes from P- and T-violation. The fractionalization of the angular momentum suggests that the vortex could be anyon which obeys the fractional statistics. We have also pointed out that the electric field is induced near the vortex core and non-trivial electromagnetic phenomena are expected to occur. In unconventional superconductivity, it has been pointed out the possibility of the existence of chiral (P- and T-violating) superconducting states, in which the condensation of Cooper pairs that have orbital angular momentum occurs. 1 Recently, it is argued the realization of the chiral p-wave (px + ipy-wave) superconductivity in Sr2RuO4. 2 Chiral d-wave (d x 2 −y 2 + idxy-wave) superconductivity has been proposed in High-Tc superconductors. 3 It is important to investigate P- and T-violating phenomena to probe the chiral superconductivity. In the present paper