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- W4386069892 abstract "We compute the effect of a $d$-wave magnetization (altermagnetism) on the spectrum of bound states (Andreev levels) in a junction between two $s$-wave superconductors (gap ${mathrm{ensuremath{Delta}}}_{0}$ and phase difference $ensuremath{phi}$). Compared to a nonmagnetic junction, the $ensuremath{phi}$ dependence of the spectrum is shifted by an offset $ifmmodepmelsetextpmfi{}ensuremath{delta}ensuremath{phi}$, dependent on the spin direction, so that the Andreev levels become spin polarized. In a planar junction, oriented along the crystalline axis of ${d}_{xy}$-wave symmetry, the excitation energies are determined by the normal-state transmission probability $T$ according to $E={mathrm{ensuremath{Delta}}}_{0}sqrt{1ensuremath{-}Tphantom{rule{0.16em}{0ex}}{sin}^{2}frac{1}{2}(ensuremath{phi}ifmmodepmelsetextpmfi{}ensuremath{delta}ensuremath{phi})phantom{{}^{0}}}$. We calculate the corresponding Josephson energy and supercurrent, recovering the 0-$ensuremath{pi}$ transition of related studies." @default.
- W4386069892 created "2023-08-23" @default.
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- W4386069892 date "2023-08-22" @default.
- W4386069892 modified "2023-09-30" @default.
- W4386069892 title "Phase-shifted Andreev levels in an altermagnet Josephson junction" @default.
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- W4386069892 doi "https://doi.org/10.1103/physrevb.108.075425" @default.
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