Nuclear magnetic resonance studies of the organic superconductor kappa-(bisethylenedithiotetrathiafulvalene)(2) copper(nitrogen(cyanide)(2))bromine

In this thesis we report $\sp1$H and $\sp{13}$C NMR measurements in the normal and superconducting states of the organic superconductor $\kappa$-(ET)$\sb2$Cu (N(CN)$\sb2$) Br (T$\sb{\rm c}$ = 11.6 K). These measurements include the temperature and magnetic field dependent lineshapes, Knight shifts, spin-spin relaxation rates and spin-lattice relaxation rates for the $\sp{-1}$H and $\sp{13}$C sites located in the organic ET molecules of $\kappa$-(ET)$\sb2$CU (N(CN)$\sb2$) Br for temperatures 2 K $$ 4.3 T). We studied the orientation dependence of this rapid relaxation and found that the extra relaxation disappeared when the magnetic field was oriented very close ($\le3\sp\circ$) to the superconducting layers. This was taken to be strong evidence that fluxoid motion caused the rapid relaxation and that intrinsic pinning of the fluxoids occurred for parallel magnetic fields.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Physics, Condensed Matter

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• DeSoto, Stewart Martin

Contributors dc:contributor

• Slichter, C.P.

• Physics, Condensed Matter

Statement dc:rights

• Copyright 1995 DeSoto, Stewart Martin

Language dc:language

eng

Identifier

AAI9543567
(UMI)AAI9543567

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/19936