Free flux flow resistivity in a strongly overdoped high-Tc cuprate: The purely viscous motion of the vortices in a semiclassical d-wave superconductor

Y. Matsuda; A. Shibata; K. Izawa; H. Ikuta; M. Hasegawa; Y. Kato

doi:10.1103/PhysRevB.66.014527

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Free flux flow resistivity in a strongly overdoped high-Tc cuprate: The purely viscous motion of the vortices in a semiclassical d-wave superconductor

Y. Matsuda, A. Shibata, K. Izawa, H. Ikuta, M. Hasegawa, Y. Kato

DOI 10.1103/PhysRevB.66.014527 · Physical Review B

T1

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Abstract

We report the free flux flow (FFF) resistivity associated with a purely viscous motion of the vortices in a moderately clean d-wave superconductor Bi:2201 in the strongly overdoped regime (Tc=16 K) for a wide range of the magnetic field in the vortex state. The FFF resistivity is obtained by measuring the microwave surface impedance at different microwave frequencies. It is found that the FFF resistivity is remarkably different from that of conventional s-wave superconductors. At low fields (H<0.2Hc2) the FFF resistivity increases linearly with H with a coefficient which is far larger than that found in conventional s-wave superconductors. At higher fields, the FFF resistivity increases in proportion to H up to Hc2. Based on these results, the energy dissipation mechanism associated with the viscous vortex motion in “semiclassical” d-wave superconductors with gap nodes is discussed. Two possible scenarios are put forth for these field dependences: the enhancement of the quasiparticle relaxation rate and the reduction of the number of the quasiparticles participating the energy dissipation in d-wave vortex state.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Bi1.74Pb0.38Sr1.88Cu1.00Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	16	Pressure not reported	unknown
Bi1.74Pb0.38Sr1.88Cu1.00Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	18	Pressure not reported	unknown
UPt3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Bi2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown