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Oscillatory melting temperature of the vortex smectic phase in layered superconductors

Oscillatory melting temperature of the vortex smectic phase in layered superconductors
Oscillatory melting temperature of the vortex smectic phase in layered superconductors
We report on transport measurements of YBa 2Cu 3O 7- delta single crystals with different oxygen contents in the geometry B, J||ab (JperpB). Our data show that the vortices become confined between the Cu-O planes below a well-defined temperature at which the effective size 2 xi of the vortex core is approximately equal to the period of the Cu-O layers. This confinement strongly increases the vortex liquid freezing temperature. A new melting line is found separating a vortex liquid and a smectic phase, which shows an oscillatory field dependence reflecting differences between commensurate and incommensurate smectic states.
4594-4597
Gordeev, S.N.
2d51d5e7-5fbd-4753-8eb8-a21ff61deb07
Zhukov, A.A.
75d64070-ea67-4984-ae75-4d5798cd3c61
de Groot, P.A.J.
98c21141-cf90-4e5c-8f2b-d2aae8efb84d
Jansen, A.G.M.
2012ee27-aa29-40c1-a2a5-198653cbe99e
Gagnon, R.
a45ce1df-0d8e-49c8-a86e-faeddd7b426a
Taillefer, L.
f034a4d8-8435-4448-a2e7-bebf79590f75
Gordeev, S.N.
2d51d5e7-5fbd-4753-8eb8-a21ff61deb07
Zhukov, A.A.
75d64070-ea67-4984-ae75-4d5798cd3c61
de Groot, P.A.J.
98c21141-cf90-4e5c-8f2b-d2aae8efb84d
Jansen, A.G.M.
2012ee27-aa29-40c1-a2a5-198653cbe99e
Gagnon, R.
a45ce1df-0d8e-49c8-a86e-faeddd7b426a
Taillefer, L.
f034a4d8-8435-4448-a2e7-bebf79590f75

Gordeev, S.N., Zhukov, A.A., de Groot, P.A.J., Jansen, A.G.M., Gagnon, R. and Taillefer, L. (2000) Oscillatory melting temperature of the vortex smectic phase in layered superconductors. Physical Review Letters, 85 (21), 4594-4597. (doi:10.1103/PhysRevLett.85.4594).

Record type: Article

Abstract

We report on transport measurements of YBa 2Cu 3O 7- delta single crystals with different oxygen contents in the geometry B, J||ab (JperpB). Our data show that the vortices become confined between the Cu-O planes below a well-defined temperature at which the effective size 2 xi of the vortex core is approximately equal to the period of the Cu-O layers. This confinement strongly increases the vortex liquid freezing temperature. A new melting line is found separating a vortex liquid and a smectic phase, which shows an oscillatory field dependence reflecting differences between commensurate and incommensurate smectic states.

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Published date: 2000

Identifiers

Local EPrints ID: 14733
URI: https://eprints.soton.ac.uk/id/eprint/14733
PURE UUID: d998d9dd-4595-402b-85b0-ba3d807ff364

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Date deposited: 04 Mar 2005
Last modified: 24 Jul 2017 16:36

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