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This article is cited in 41 scientific papers (total in 41 papers)
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Theory of gauge-invariant response of superconductors to an external electromagnetic field
P. I. Arseev, S. O. Loiko, N. K. Fedorov P. N. Lebedev Physical Institute, Russian Academy of Sciences
Abstract:
A consistent method of calculating the linear response to an external magnetic field that allows obtaining the result in a manifestly gauge-invariant form is proposed. Within the diagram technique for nonequilibrium processes, the self-consistency equations for the order parameter in an arbitrary-gauge field allow deriving an equation that determines the phase of the order parameter as a function of the external field. Such a method automatically accounts for the existence of collective excitations in superconductors, which must be taken into consideration in accordance with the continuity equation. The possible types of collective excitations in pure superconductors at different temperatures are considered. The authors present a microscopic theory that explains the possibility of observing collective modes in superconducting tunnel junctions.
Received: February 9, 2005 Revised: May 20, 2005
Citation:
P. I. Arseev, S. O. Loiko, N. K. Fedorov, “Theory of gauge-invariant response of superconductors to an external electromagnetic field”, UFN, 176:1 (2006), 3–21; Phys. Usp., 49:1 (2006), 1–18
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https://www.mathnet.ru/eng/ufn264 https://www.mathnet.ru/eng/ufn/v176/i1/p3
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Abstract page: | 580 | Full-text PDF : | 153 | References: | 56 | First page: | 1 |
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