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Abstract: Superconducting order parameters that are odd under exchange oftime-coordinates of the electrons constituting a Cooper-pair, are potentiallyof great importance both conceptually and technologically. Recent experimentsreport that such an odd-frequency superconducting {\it bulk} state may berealized in certain heavy-fermion compounds. While the Josephson currentnormally only flows between superconductors with the same symmetries withrespect to frequency, we demonstrate that an exchange field may induce acurrent between diffusive even- and odd-frequency superconductors. Thissuggests a way to identify the possible existence of bulk odd-frequencysuperconductors.



Author: Jacob Linder, Takehito Yokoyama, Asle Sudbø

Source: https://arxiv.org/







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