We show that the Cooper pair wave function at the center of an Abrikosov vortex with vorticity m has a different parity with respect to frequency from that in the bulk if m is an odd number, while it has the same parity if m is an even number. As a result, in a conventional vortex with m=1, the local density of states at the Fermi energy has a maximum minimum at the center of the vortex core in an even odd- frequency superconductor. We propose a scanning tunneling microscope experiment using a superconducting tip to explore odd-frequency superconductivity.
|Journal||Physical review B: Condensed matter and materials physics|
|Publication status||Published - 2008|
Yokoyama, T., Tanaka, Y., & Golubov, A. A. (2008). Theory of pairing symmetry inside the Arikosov vortex core. Physical review B: Condensed matter and materials physics, 78(1), 012508-. https://doi.org/10.1103/PhysRevB.78.012508