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arXiv · 1804.07244

Odd-frequency Pairing in Conventional Josephson Junctions

Alexander V. Balatsky·Sergey S. Pershoguba·Christopher Triola
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Abstract

Using a simple theoretical model, we demonstrate the emergence of odd-frequency pair amplitudes in conventional Josephson junctions both in the absence of a voltage (DC effect) and in the presence of a finite voltage (AC effect). In both cases, we find that odd-frequency interlead pairing emerges whenever a Josephson current is expected to flow. Additionally, we show that the interlead spin-susceptibility is directly influenced by the presence of the odd-frequency pair amplitudes. Specifically, we find that the spin-susceptibility is suppressed when the odd-frequency component is the largest. By establishing a novel link between the physics of Josephson junctions and odd-frequency pairing, this work demonstrates the importance of odd-frequency pairing for understanding conventional superconducting systems.

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Alexander V. Balatsky, Sergey S. Pershoguba, Christopher Triola. 2018-04-19. Odd-frequency Pairing in Conventional Josephson Junctions. https://arxiv.org/abs/1804.07244

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