Motion of flux lines under an applied Lorentz force and rf penetration from ${}^{89}Y$ and ${}^{63}{Cu}$ NMR in ${YBa}_{2}$ ${Cu}_{3}$ $O_{7 - δ}$

1 July 1993

journal article
research article
Published by American Physical Society (APS) in Physical Review B

Vol. 48 (1) , 528-531
https://doi.org/10.1103/physrevb.48.528

Abstract

{}^{89}Y

NMR spectra in

{YBa}_{2}

{Cu}_{3}

O_{7 - δ}

(Y 1:2:3) demonstrate that an applied Lorentz force induces a narrowing of the line due to a decrease in the effective correlation time of flux-line (FL) motion. No effect is detected on the nuclear spin-lattice relaxation. The influence of the FL motion on the radio-frequency penetration has been investigated through the study of the amplitude of the

{}^{63}{Cu}

NMR echo signal in magnetically aligned Y 1:2:3 powders.

Keywords

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Motion of flux lines under an applied Lorentz force and rf penetration fromY89andCu63NMR inYBa2Cu3O7−δ

Abstract

Keywords

Motion of flux lines under an applied Lorentz force and rf penetration from ${}^{89}Y$ and ${}^{63}{Cu}$ NMR in ${YBa}_{2}$ ${Cu}_{3}$ $O_{7 - δ}$