Two Dimensional <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow></mrow><mrow><mn>89</mn></mrow></msup></mrow></math>Y NMR Study of Vortex Dynamics in YB<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">a</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></math>C<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">u</mi></mrow><mrow><mn>3</mn></mrow></msub></mrow></math> <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi>O</mi></mrow><mrow><mn>7</mn><mo>−</mo><mi>δ</mi></mrow></msub></mrow></math>

Y.-Q. Song

doi:10.1103/PhysRevLett.75.2008

Two Dimensional $^{89}$ Y NMR Study of Vortex Dynamics in YB $a_{2}$ C $u_{3}$ $O_{7 - δ}$

Y.-Q. Song

Phys. Rev. Lett. 75, 2008 – Published 4 September 1995

Abstract

We have performed two dimensional ${}^{89}Y$ NMR experiments on a powder sample of ${YBa}_{2} {Cu}_{3} O_{7 - δ}$ around the vortex lattice melting temperature in a magnetic field. Local motion of vortices with small amplitude is observed; however, long range diffusive motion of the vortices appears to be absent over the time scale of 10 s.