O.M. Vyasilev, N.N. Kolesnikov, M.P. Kulakov,
I.F. Schegolev.
Inhomogeneous 205Tl
NMR line broadening in Tl2Ba2CuOx
single crystals.
Abstract:
Temperature and angular dependences of
205Tl line width, D1/2 ,
and transverse relaxation time, t , have been
measured in two crystals of Tl2Ba2CuOx with
Tc=32 and 115K, respectively. In the normal state both
D1/2 and
t have been found to be temperature - independent and not
to vary with varying Tc, implying that the size of inhomogeneous
broadening originates, most probably, from local distortions associated
with Cu substitution for Tl. A conclusion is that variations in Tc
are not related to this substitution.