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Proceedings Paper

Kinetics of stripes and pseudogap in high-temperature superconductors
Author(s): V. M. Petnikova; Vladimir V. Shuvalov; Andrei V. Voronov
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Paper Abstract

To interpret the data of transient nonlinear spectroscopy of cooper-oxide high-temperature superconductors, a phenomenological model, describing magneto-dipole self- organization of holes in CuO2 planes and kinetics of the corresponding phase transition, has been developed. It has been shown that, for the exchange energy approximately 100 meV and the doping level <n> approximately 0.1 hole/cell, the temperature T decreases below the critical point T* approximately 150 K leads to formation of a spatially non-uniform distribution of holes (the stripe- structure) and to appearance of corresponding energy gap in the electronic structure. Calculated steady-state dependencies of T* on <n> and of the gap width on T agree with the known experimental data. The predicted phase transition kinetics depends on the initial temperature T. When T* < T < Tm approximately equals (1.4 divided by 1.5) T*, the stripe-structure decay is rather slow (approximately 10-9s and more) two-stage process. During the first stage, a large-scale fluctuation of an average dipole moment is formed and after that the spatial region, entrained in the fluctuation, broadens as the phase switching wave.

Paper Details

Date Published: 29 May 2002
PDF: 11 pages
Proc. SPIE 4752, ICONO 2001: Ultrafast Phenomena and Strong Laser Fields, (29 May 2002); doi: 10.1117/12.469100
Show Author Affiliations
V. M. Petnikova, M.V. Lomonosov Moscow State Univ. (Russia)
Vladimir V. Shuvalov, M.V. Lomonosov Moscow State Univ. (Russia)
Andrei V. Voronov, M.V. Lomonosov Moscow State Univ. (Russia)

Published in SPIE Proceedings Vol. 4752:
ICONO 2001: Ultrafast Phenomena and Strong Laser Fields
Vyacheslav M. Gordienko; Anatoly A. Afanas'ev; Vladimir V. Shuvalov, Editor(s)

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