Generalized Drude model and electromagnetic screening in metals and superconductors

doi:10.1088/1674-1056/27/5/057401

Abstract

Electromagnetic screening is studied from the perspective of fluid mechanics by generalizing the Drude theory, which unifies three known results:Thomas-Fermi screening of the longitudinal field in both metals and superconductors, the skin effect of the transverse field in metals, and the Meissner effect in superconductors. In the special case of superfluid electrons, we slightly generalize the London equations to incorporate the longitudinal electric fields. Moreover, regarding the experiments, our study points out that the dynamical measurement may overestimate the superfluid density.

Keywords: electromagnetic screening Thomas-Fermi screening London penetration depth Meissner effect

Received: 26 January 2018
Revised: 05 March 2018
Accepted manuscript online:

PACS:	74.25.N-	(Response to electromagnetic fields)
	74.20.De	(Phenomenological theories (two-fluid, Ginzburg-Landau, etc.))
	74.25.Gz	(Optical properties)
	71.10.Ca	(Electron gas, Fermi gas)

Fund:

Project supported by the National Natural Science Foundation of China (Grant No.11504164).

Corresponding Authors: Da Wang
E-mail: dawang@nju.edu.cn

Cite this article:

Da Wang(王达) Generalized Drude model and electromagnetic screening in metals and superconductors 2018 Chin. Phys. B 27 057401

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