Thickness dependent spin-injection effects in Nd0.7Ca0.3MnO3/YBa2Cu3O7 bilayers

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Title:	Thickness dependent spin-injection effects in Nd0.7Ca0.3MnO3/YBa2Cu3O7 bilayers
Authors:	Hsu, Daniel;Lin, J. G.;Chang, C. P.;Chen, C. H.;Chiang, C. H.;Chan, W. C.;Wu, W. F.
Contributors:	淡江大學物理學系
Keywords:	barium compounds;calcium compounds;high-temperature superconductors;neodymium compounds;proximity effect (superconductivity);spin polarised transport;superconducting transition temperature;type II superconductors;yttrium compounds
Date:	2008-04
Issue Date:	2010-08-10 09:48:14 (UTC+8)
Publisher:	College Park:American Institute of Physics (AIP)
Abstract:	Two Nd0.7Ca0.3MnO3/YBa2Cu3O7 (NCMO/YBCO) bilayers with different thickness ratios are fabricated and the spin-injection effects are investigated. The NCMO/YBCO samples have thicknesses of 100 nm/200 nm and 200 nm/200 nm, which are denoted as N/Y(1) and N/Y(2), respectively. It is shown that the current-induced suppression rate of superconducting transition temperature (dTc/dI) in YBCO is enhanced by four to six times of magnitude in N/Y(1) and N/Y(2) compared with that in pure YBCO. Furthermore, dTc/dI in N/Y(2) is larger than that in N/Y(1), which suggests that the thickness of NCMO has influence on the pair breaking in YBCO.
Relation:	Journal of Applied Physics 103(7), pp.07C710(3 pages)
DOI:	10.1063/1.2833819
Appears in Collections:	[Graduate Institute & Department of Physics] Journal Article

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