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Approximating the electron-phonon coupling constant in superconductors from thermodynamic data

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Abstract

A method is discussed for estimating the electron-phonon coupling constant λep from the jump in heat capacity at the superconducting transition which can be enhanced above the BCS value by strong coupling effects. Although based on a simple model of the superconducting state, reasonable agreement is found with published experimental data for a variety of crystalline superconductors, none of which is strongly anisotropic.

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Authors and Affiliations

  1. Becton Center, Section of Applied Physics, Yale University, New Haven, Connecticut

    B. J. Dalrymple & P. Santhanam

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  1. B. J. Dalrymple
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  2. P. Santhanam
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Dalrymple, B.J., Santhanam, P. Approximating the electron-phonon coupling constant in superconductors from thermodynamic data. J Low Temp Phys 57, 349–357 (1984). https://doi.org/10.1007/BF00681198

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