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Force-free state in a superconducting single crystal and angle-dependent vortex helical instability

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Force-free state in a superconducting single crystal and angle-dependent vortex helical instability

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dc.contributor.author	del Valle, J.
dc.contributor.author	Gomez, A.
dc.contributor.author	Gonzalez, E. M.
dc.contributor.author	Mañas Valero, Samuel
dc.contributor.author	Coronado Miralles, Eugenio
dc.contributor.author	Vicent, J. L.
dc.date.accessioned	2017-06-27T15:16:37Z
dc.date.available	2017-06-27T15:16:37Z
dc.date.issued	2017
dc.identifier.citation	del Valle, J. Gomez, A. Gonzalez, E. M. Mañas Valero, Samuel Coronado Miralles, Eugenio Vicent, J. L. 2017 Force-free state in a superconducting single crystal and angle-dependent vortex helical instability Physical Review B 95 224510
dc.identifier.uri	http://hdl.handle.net/10550/59233
dc.description.abstract	Superconducting 2H−NbSe2 single crystals show intrinsic low pinning values. Therefore, they are ideal materials with which to explore fundamental properties of vortices. (V, I) characteristics are the experimental data we have used to investigate the dissipation mechanisms in a rectangular-shaped 2H−NbSe2 single crystal. Particularly, we have studied dissipation behavior with magnetic fields applied in the plane of the crystal and parallel to the injected currents, i.e., in the force-free state where the vortex helical instability governs the vortex dynamics. In this regime, the data follow the elliptic critical state model and the voltage dissipation shows an exponential dependence, V∝eα(I−IC∥), IC∥ being the critical current in the force-free configuration and α a linear temperature-dependent parameter. Moreover, this exponential dependence can be observed for in-plane applied magnetic fields up to 40° off the current direction, which implies that the vortex helical instability plays a role in dissipation even out of the force-free configuration.
dc.language.iso	eng
dc.relation.ispartof	Physical Review B, 2017, vol. 95, p. 224510
dc.subject	Física
dc.subject	Ciència dels materials
dc.title	Force-free state in a superconducting single crystal and angle-dependent vortex helical instability
dc.type	journal article	es_ES
dc.date.updated	2017-06-27T15:16:38Z
dc.identifier.doi	10.1103/PhysRevB.95.224510
dc.identifier.idgrec	119756
dc.rights.accessRights	open access	es_ES