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Temperature dependence of the magnetic penetration depth in the vortex state of the pyrochlore superconductor, Cd2Re2O7

Lumsden, MD; Dunsiger, SR; Sonier, JE; Miller, RI; Kiefl, RF; Jin, R; He, J; ... Gardner, JS; + view all (2002) Temperature dependence of the magnetic penetration depth in the vortex state of the pyrochlore superconductor, Cd2Re2O7. PHYS REV LETT , 89 (14) , Article 147002. 10.1103/PhysRevLett.89.147002. Green open access

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Abstract

We report transverse-field and zero-field muon spin rotation and relaxation studies of the superconducting rhenium oxide pyrochlore, Cd2Re2O7. Transverse-field measurements (H=0.007 T) show line broadening below T-c, which is characteristic of a vortex state, demonstrating conclusively the type-II nature of this superconductor. The penetration depth is seen to level off below about 400 mK (T/T(c)similar to0.4), with a rather large value of lambda(T=0)similar to7500 Angstrom. The temperature independent behavior below similar to400 mK is consistent with a nodeless superconducting energy gap. Zero-field measurements indicate no static magnetic fields developing below the transition temperature.

Type: Article
Title: Temperature dependence of the magnetic penetration depth in the vortex state of the pyrochlore superconductor, Cd2Re2O7
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.89.147002
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.89.147002
Language: English
Keywords: MUON-SPIN-ROTATION, GEOMETRICAL FRUSTRATION, CRITICAL-BEHAVIOR, OXIDE CD2RE2O7, TRANSITION, PHASE, FERROMAGNET, LATTICE, LIQUID, LIV2O4
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/133463
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