The superconducting diode effect

Phase diagrams of the diode effect in superconducting heterostructures

“…In order to compute the total superconducting current we perform integration over the widths of the F and S parts along the x axis. In what follows we present the phase diagrams of the quality factor defined in equation (1). In order to compute η we find the critical supercurrents ( ) I c +by calculating the total supercurrent versus Cooper pair momentum q and finding the maximum and minimum values of I(q).…”

“…The superconducting (or supercurrent) diode effect (SDE) is the superconducting analog of the semiconducting diode effect in p − n junctions. While in normal systems the diode effect corresponds to the conduction of the normal current in the only one direction, the superconducting diode effect involves the nonreciprocity of the supercurrent [1]. The discovery of such effect brings many potential applications in low-power logic circuits as quantum computing and spin-based electronics [2,3].…”

“…Various systems that can behave as superconducting diodes have been recently theoretically proposed [4][5][6][7][8][9][10][11][12][13] and experimentally discovered [14][15][16][17][18][19][20][21][22][23]. The superconducting diode effect can be realized in two-dimensional (2D) superconducting systems if both inversion and time-reversal symmetries are broken [1]. One of the most promising SDE devices are Josephson diodes, where weak link plays the key role in achieving the current nonreciprocity [24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39].…”

“…The 'conventional' SDE devices require both inversion and time-reversal symmetry breaking in 2D superconducting films [1]. The inversion symmetry can be broken by introducing the spin-orbit coupling.…”

Superconducting properties of bismuthate/manganite epitaxial multilayers

“…In particular, s-wave S/F hybrids with strong spin-orbit coupling (SOC) [18] are attracting increasing interest owing to exotic phenomena they can realize, such as the generation and control of s-wave odd-frequency spin-triplet Cooper pairs [19][20][21][22][23], the topological superconducting state [24,25] and the superconducting diode effect [26][27][28]. Large SOC in oxide materials could further amplify these effects and extend our understanding of the exotic phenomena.…”