We review a Ginzburg-Landau phenomenological model for the dependence of the critical temperature on microscopic strain in tetragonal high-T-c cuprates. Such a model is in agreement with the experimental results for LSCO under epitaxial strain, as well as with the hydrostatic pressure dependence of T in most cuprates. In particular, a nonmonotonic dependence of T on hydrostatic pressure, as well as on in-plane or apical microstrain, is derived. From a microscopic point of view, such results can be understood as due to the proximity to an electronic topological transition (ETT). In the case of LSCO, we argue that such an ETT can be driven by a strain-induced modification of the band structure, at constant hole content, at variance with a doping-induced ETT, as is usually assumed.

Strain-induced electronic topological transitions in LaSrCuO thin films

CERMELLI, Paolo;
2003-01-01

Abstract

We review a Ginzburg-Landau phenomenological model for the dependence of the critical temperature on microscopic strain in tetragonal high-T-c cuprates. Such a model is in agreement with the experimental results for LSCO under epitaxial strain, as well as with the hydrostatic pressure dependence of T in most cuprates. In particular, a nonmonotonic dependence of T on hydrostatic pressure, as well as on in-plane or apical microstrain, is derived. From a microscopic point of view, such results can be understood as due to the proximity to an electronic topological transition (ETT). In the case of LSCO, we argue that such an ETT can be driven by a strain-induced modification of the band structure, at constant hole content, at variance with a doping-induced ETT, as is usually assumed.
2003
17
542
547
Angilella, GGN; Balestrino, G; Cermelli, P; Podio-Guidugli, P; Varlamov, AA
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/129043
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