ECRYS - 93
J. Phys. IV France 03 (1993) C2-171-C2-174
Charge-density-wave phase slip in NbSe3M.P. MAHER1, S. RAMAKRISHNA1, D.A. DI CARLO1, TL. ADELMAN1, V. AMBEGAOKAR1, J.D. BROCK2 and R.E. THORNE1
1 Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, NY 14853, U.S.A.
2 School of Applied and Engineering Physics, Cornell University, Ithaca, NY 14853, U.S.A.
We have studied the phase-slip process by which charge-density-wave (CDW) current is converted to single-particle current at electrical contacts. Transport and X-ray scattering measurements indicate that an excess voltage Vps dropped between current contacts induces a large static deformation of the CDW phase. The measured Vps - and temperature-dependent phase-slip rates are consistent with a model in which CDW dislocation loops are thermally nucleated in the presence of these deformations. The effects of impurities and contact perturbations on the phase slip process are also discussed.
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