amen - Electrodynamics of Superconductors in Weak Fields...

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Unformatted text preview: Electrodynamics of Superconductors in Weak Fields Amensisa Abdi Department of Physics University of Cincinnati Cincinnati, Ohio 45221 Nov 28, 2001 Abstract The discovery of superconductivity in a mercury sample by Heike Kamerlingh Onnes in 1911 have led to the rapid development and advancement of high T c su- perconductivity technology [1]. The highest T c of superconductors was that of the compound Nb3Ge until 1986 when two scientists J. G. Bednoz and K. A. Mller reported possible superconductivity in a mixture of La and Ba Copper Oxides at temperature of 30 K [2]. More recently, scientists have reported superconductivity at a temperature as high as 150 K in an oxide containing mercury [3]. However, to develop a new technology that utilizes superconductors, a complete understanding of the macroscopic electrodynamics of superconductors is important. Therefore, in this paper, some basic phenomena of superconductors and the macroscopic electro- dynamic theory of superconductors in weak fields are discussed. 1 1. Introduction The fascinating phenomena of superconductors and their potential applications had at- tracted not only experimentalists for finding new superconductors, but also attracted theo- reticians in order to understand the physics behind superconductivity to describe the elec- trodynamics and thermodynamics properties of superconductivity. Intense research has been done toward this both on the microscopic and the macroscopic properties of super- conductivity. In general, the microscopic properties of superconductivity are described by the well-known BCS theory which is developed by Bardeen, Cooper and Schriefier in 1957, where as the macroscopic behaviors of superconductivity are described by the well-known London theory developed by the brothers F. and H. London in 1937[4]....
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This note was uploaded on 01/08/2012 for the course PHYSICS 707 taught by Professor Electrodynamics during the Fall '11 term at LSU.

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amen - Electrodynamics of Superconductors in Weak Fields...

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