Self-trapping transition in the ground state of the Holstein t-J model

We analyze the two-dimensional Holstein t- J model within the spin-wave approximation by means of an iterative Lanczos algorithm to describe the dynamics of holes in CuO 2 planes of high- T c superconductors. A sharp crossover from nearly free to self-trapped excitations is found at a finite value o...

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Bibliographic Details
Published inPhysics letters. A Vol. 195; no. 3; pp. 231 - 235
Main Authors Sabczynski, Jörg, Sherman, Alexei, Schreiber, Michael
Format Journal Article
LanguageEnglish
Published Elsevier B.V 05.12.1994
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Summary:We analyze the two-dimensional Holstein t- J model within the spin-wave approximation by means of an iterative Lanczos algorithm to describe the dynamics of holes in CuO 2 planes of high- T c superconductors. A sharp crossover from nearly free to self-trapped excitations is found at a finite value of the hole-phonon coupling constant. In the vicinity of this crossing a coexistence of these two types of states and ferron-phonon complexes is found.
ISSN:0375-9601
1873-2429
DOI:10.1016/0375-9601(94)90158-9