Magnetic field dependence of the London penetration depth in the vortex state of YBa{sub 2}Cu{sub 3}O{sub 6.95}
- TRIUMF, Canadian Institute for Advanced Research and Department of Physics, University of British Columbia, Vancouver, British Columbia, V6T 1Z1 (CANADA)
- Department of Physics, Virginia State University, Petersburg, Virginia 23806 (United States)
The magnetic penetration depth in the vortex state of YBa{sub 2}Cu{sub 3}O{sub 6.95} has been measured as a function of temperature T and magnetic field H applied along the {cflx c} axis. The internal field distribution in single crystals was fit assuming a triangular vortex lattice with an average in-plane penetration depth {lambda}{sub ab}=({lambda}{sub a}{lambda}{sub b}){sup 1/2}=1155(3) {Angstrom}, extrapolated to T=0 and H=0; {lambda}(H,T) increases with both T and H. The large T-independent increase in {lambda}{sub ab} with H is attributed to a strong nonlinear response as a result of the unconventional pairing in the superconducting state. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 496746
- Journal Information:
- Physical Review, B: Condensed Matter, Vol. 55, Issue 17; Other Information: PBD: May 1997
- Country of Publication:
- United States
- Language:
- English
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