The absence of the Hebel-Slichter peak in the observed temperature dependence of the nuclear spin relaxation rate, 1/T1, is investigated by evaluating the effect of fluctuations in the superconducting order parameter on the local electronic susceptibility. The interactions between fluctuations have been taken into account in order to smear out the peak in the immediate vicinity of the critical temperature Tc. It is found that, below Tc, 1/T1 rapidly decreases in agreement with the experimental data.
Smearing of the hebel-slichter peak by 2D fluctuations in layered cuprate superconductors
ZOLI, Marco
1991-01-01
Abstract
The absence of the Hebel-Slichter peak in the observed temperature dependence of the nuclear spin relaxation rate, 1/T1, is investigated by evaluating the effect of fluctuations in the superconducting order parameter on the local electronic susceptibility. The interactions between fluctuations have been taken into account in order to smear out the peak in the immediate vicinity of the critical temperature Tc. It is found that, below Tc, 1/T1 rapidly decreases in agreement with the experimental data.File in questo prodotto:
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