Moving Vortex States Studied by Current Flow in Single CrystalBi2Sr2CaCu2 | Zendy

Jovan Mirković | Zendy; Kazuhiro Kimura | Zendy; K. Kadowaki | Zendy

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Moving Vortex States Studied by Current Flow in Single CrystalBi2Sr2CaCu2

Author(s) -

Jovan Mirković,

Kazuhiro Kimura,

K. Kadowaki

Publication year - 1999

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.82.2374

Subject(s) - vortex , physics , condensed matter physics , magnetization , energy (signal processing) , vortex state , phase transition , electrical resistivity and conductivity , magnetic field , thermodynamics , quantum mechanics

Nonequilibrium vortex states have been investigated in single crystalline Bi2Sr2CaCu2O8+δ using in-plane resistance and magnetization measurements. It was found that the first-order vortex-lattice melting transition (VLMT) phase line persists even in the dynamic vortex states in a wide range of driving forces and sharply separates the vortex solid and the vortex liquid phases. The activation energy U deduced from the relation R = R0exp(-U/kBT) abruptly increases below VLMT, strongly depends on transport currents, and weakly depends on magnetic fields in the vortex solid state. The resistivity attains zero value sharply at VLMT in the low current limit

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