Transport properties and fluctuations in underdoped GdBa2Cu33Ox thin films

Article Article scientifique Article Transport properties and fluctuations in underdoped GdBa2Cu33Ox thin films eng 1999 author Matthey Daniel 94487 author Marre Danièle 511060 author Gariglio Stefano 0000-0001-8263-4506 508404 author Triscone Jean-Marc 21933 1169-1173 10.1023/A:1022511415276 0022-2291 http://link.springer.com/10.1023/A:1022511415276 We have investigated the transport properties, resistivity and Hall effect, in a series of underdoped GdBa2Cu3Ox thin films grown by off-axis magnetron sputtering. We find a systematic correlation between the critical temperature T-c and the inverse Hall constant R-H(-1), related, in simple models, to the carrier concentration n. Our experimental thin film T-c(n) data are in good agreement with the temperature-doping phase diagram obtained for YBa2Cu3Ox, single crystals. By measuring the activation energies in the liquid vortex phase, and by using a 2-dimensional model for vortex dynamics, we have extracted the penetration depth of these samples, and studied the relation between the carrier concentration and the superfluid density to probe the role of phase fluctuations on superconductivity. Dewey 500.2 33 Département de physique de la matière quantique 131 false 784 Groupe Triscone Journal of Low Temperature Physics 117 5/6 91bd2a12-e108-4e3e-8417-824fd869baf8 Article (Published version) Restricted Matthey_JLowTempPhys99.pdf 255582 application/pdf restrictedAccess Faculté des sciences / Section de physique / Département de physique de la matière quantique

Title	Published in	Access level	OA Policy	Year	Views	Downloads

Transport properties and fluctuations in underdoped GdBa₂Cu₃3O_x thin films	Journal of Low Temperature Physics			1999	380	0

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Marre, Danièle