Extended Power Law Nonlinear Response and Amplitude-Dependent ac Susceptibility of High-T<suB>c</suB> Superconductors

Chin. Phys. Lett.

2004, Vol. 21

Issue (7): 1340-1343 DOI:

Original Articles

Extended Power Law Nonlinear Response and Amplitude-Dependent ac Susceptibility of High-T_c Superconductors

NING Zhen-Hua;CHEN Kai-Xuan;YIN Lan;LU Guo;XU Xiao-Lin;GUO Jian-Dong;WANG Fu-Ren;YIN Dao-Le

Department of Physics, Peking University, Beijing 100871

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NING Zhen-Hua, CHEN Kai-Xuan, YIN Lan et al 2004 Chin. Phys. Lett. 21 1340-1343

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Abstract We show a nonlinear materials equation of superconductors in the form of an extended power law which can be derived from the Ginzburg-Landau (GL) functional. The critical current J_c and ac susceptibility X are analysed by using this equation, and the puzzling question of the increasing height of the out-of-phase susceptibility peak X''_peak with increasing amplitude h_ac is explained.

Keywords: 74.25.Ha 74.20.De 74.25.Sv 74.25.Fy

Published: 01 July 2004

PACS:	74.25.Ha	(Magnetic properties including vortex structures and related phenomena)
	74.20.De	(Phenomenological theories (two-fluid, Ginzburg-Landau, etc.))
	74.25.Sv	(Critical currents)
	74.25.Fy

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2004/V21/I7/01340

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	NING Zhen-Hua
	CHEN Kai-Xuan
	YIN Lan
	LU Guo
	XU Xiao-Lin
	GUO Jian-Dong
	WANG Fu-Ren
	YIN Dao-Le

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