Lattice multi-stability in low-dimensional structures

A. Radosz, K. Ostasiewicz, P. Magnuszewski, Radosiński, F. V. Kusmartsev, J. H. Samson

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


The ground state of an electronic system of compounds revealing photo-induced phase transitions might be regarded as a multiple-well, on-site potential. Different types of asymmetric, multi-stable potentials correspond to compounds of different types: to spin conversion systems and to charge transfer systems. Thermodynamic properties of one-dimensional lattice systems with an asymmetric on-site double well and triple well potential are then considered in quantum and classical approaches. Studying a variety of regimes, one finds that the key feature is a level of asymmetry distinguished as a "shift type" and "shape type" in limiting cases. Nearly singular behaviour of heat capacity in "shape type" systems indicates an entropy driven phase transformation.

Original languageBritish English
Pages (from-to)303-310
Number of pages8
JournalPhysica Status Solidi (B) Basic Research
Issue number2
StatePublished - Feb 2005


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