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Theory of nonreciprocal Josephson effect | | Kou Misaki
; Naoto Nagaosa
; | | Date: |
15 Feb 2020 | | Abstract: | The hetero junction between the different materials often gives the
rectification effect; e.g., pn junction is used for diode. On the other hand,
the Josephson junction between the two superconductors is assumed to show
symmetric response between the two directions of the current, i.e., the voltage
drop $V$ is anti-symmetric with respect to the sign change of the current $I$.
However, there should be an asymmetry between the states of charge accumulation
on right and left sides of the Josephson junction, which can lead to the
nonreciprocal responses. Here we demonstrate theoretically that nonreciprocal
$I$-$V$ characteristic appears due to this charging energy difference both in
the classical and quantum regimes. This result will pave a route to design and
develop the Josephson diode. | | Source: | arXiv, 2002.6458 | | Services: | Forum | Review | PDF | Favorites | |
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