Generation of odd-frequency surface superconductivity with spontaneous spin current due to the zero-energy Andreev bound state

Shun Matsubara, Yukio Tanaka, Hiroshi Kontani

We propose that the odd-frequency $s$ wave ($s^{\mathrm{odd}}$ wave) superconducting gap function, which is usually unstable in the bulk, naturally emerges at the edge of $d$ wave supe…