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In the beginning of the Lecture, we find the temperature behavior of the superconducting gapSuperconducting gap and determine specific heat of the superconductor at low and high temperaturesTemperaturehigh temperature. We emphasize the fundamental role of the Meissner effectEffectMeissner effectMeissnerMeissner effect in the physics of superconductivity and derive expression for the superconducting current. We introduce the concept of the gauge invariance and write down London’s equation. In the end of the Lecture, we mention Abrikosov vorticesAbrikosovAbrikosov vortexVortexAbrikosov vortex and the critical fieldsFieldcritical field in superconductors of the first and second type.

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Lecture 25. Thermodynamics of the Superconductor

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  • 发表日期：

    2026年

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  • Maxim Kagan

摘要

In the beginning of the Lecture, we find the temperature behavior of the superconducting gapSuperconducting gap and determine specific heat of the superconductor at low and high temperaturesTemperaturehigh temperature. We emphasize the fundamental role of the Meissner effectEffectMeissner effectMeissnerMeissner effect in the physics of superconductivity and derive expression for the superconducting current. We introduce the concept of the gauge invariance and write down London’s equation. In the end of the Lecture, we mention Abrikosov vorticesAbrikosovAbrikosov vortexVortexAbrikosov vortex and the critical fieldsFieldcritical field in superconductors of the first and second type.