Electrodynamics of Solids and Microwave Superconductivity

Zhou, Shuang

doi:10.1002/0471206466

Cited by 19 publications

(18 citation statements)

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“…The practical measurement of T c of a superconductor is usually made using three basic methods, method of resistance measurement, methods of magnetic-permeability measurement, and methods of specific heat measurement. It has been found that the behavior of zero dc-resistance of superconductor is modified significantly at very high frequency of alternating current as shown by London in 1940 [4]. The two-fluid electron model may explain this property of superconductors.…”

Section: Basic Phenomena Of Superconductivitymentioning

confidence: 91%

“…E. Becker, Heller, and Sauter argued that if the electrons encounter no resistance, an applied electric filed would accelerate them steadily according to Newtons law [4]:…”

Section: The London Theory Of Superconductorsmentioning

confidence: 99%

“…Intense research has been done toward this both on the microscopic and the macroscopic properties of superconductivity. 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].…”

Section: Introductionmentioning

confidence: 99%

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Electrodynamics of Superconductors in Weak Fields

Zhou

1999

Electrodynamics of Solids and Microwave Superconductivity

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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 superconductivity 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 electrodynamic theory of superconductors in weak fields are discussed.

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Section: Basic Phenomena Of Superconductivitymentioning

confidence: 91%

“…E. Becker, Heller, and Sauter argued that if the electrons encounter no resistance, an applied electric filed would accelerate them steadily according to Newtons law [4]:…”

Section: The London Theory Of Superconductorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Electrodynamics of Superconductors in Weak Fields

Zhou

1999

Electrodynamics of Solids and Microwave Superconductivity

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“…In the superconducting state, the electromagnetic wave can propagate in the range of the London penetration depth. The London penetration depth is dependent on the temperature T, which can be expressed as    (Zhou, 1999), where T c and 0 are the critical temperature and the London penetration depths at the absolute zero temperature, respectively. When the temperature is above about 0.8 times the critical temperature, the London penetration depth increases rapidly and then approaches infinity as the temperature is close to T c .…”

Section: The Plane Wave Expansion Methods For Calculating the Photonicmentioning

confidence: 99%

“…Adjusting the temperature of the superconductor can control the refracted index of the superconductor as well as the PBS of the superconductor PhC. When T  T c is satisfied, the dependence of the plasma frequency on the temperature is given by (Zhou, 1999)   …”

Section: The E-polarized Photonic Band Structurementioning

confidence: 99%

Photonic Band Structure and Transmittance of the Superconductor Photonic Crystal

Pei¹

2011

Superconductivity - Theory and Applications

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Application of a phenomenological model for the surface impedance in high temperature superconducting films

Mosquera

Téllez

Roa-Rojas

2007

Phys. Status Solidi (c)

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We report the application of a phenomenological model for the microwave surface impedance in high temperature superconducting films. This model is based on the modified two-fluid model, in which the real and imaginary parts of the surface impedance use the modelling parameter γ. This is responsible for the superconducting and normal charge carrier density and is used for the description of the temperature dependence of the London penetration depth λ L (T) including λ L (0). The relaxation time model also uses the γ parameter in combination with the residual resistance parameter α. The parameter δ 1 << 1 provides a finite value of the relaxation time at T = 0. The normal conductivity is described by the metals conduction model and the phenomenological description of the normal conductivity contains four parameters: δ 1 , γ, α, and δ 2 . The parameter δ 2 << 1 is responsible for the non-pairing part of the charge carrier at T = 0. Temperature dependence of σ n (T) is a result of the competition between the increase of the relaxation time and the decrease of the normal charge-carrier density. We applied this model to analyze experimental results of MgB 2 , YBa 2 Cu 3 O 7-δ and GdBa 2 Cu 3 O 7-δ superconducting material.

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Electrodynamics of Solids and Microwave Superconductivity

Cited by 19 publications

References 0 publications

Electrodynamics of Superconductors in Weak Fields

Electrodynamics of Superconductors in Weak Fields

Photonic Band Structure and Transmittance of the Superconductor Photonic Crystal

Application of a phenomenological model for the surface impedance in high temperature superconducting films

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