title: Nature of the vibron self-trapped states in hydrogen-bonded macromolecular chains.
abstract: We study the influence of temperature and the values of basic energy parameters on the character of vibron self-trapped states in quasi-one-dimensional hydrogen-bonded molecular chains. Investigations have been carried out within the one-dimensional Holstein molecular crystal model employing the variational extension of the Lang-Firsov unitary transformation. It was found that, in the low-temperature regime, only partially dressed small-polaron states may exist. With the rise of temperature, the system enters the metastability region, where partially dressed (light and mobile) and fully dressed (heavy and practically immobile) small-polaron states may exist simultaneously.
authors.affiliation: University of Belgrade, The Vinča Institute of Nuclear Sciences, PO Box 522, 11001 Belgrade, Serbia.
authors.forename: D
authors.initials: D
authors.lastname: Čevizović
authors.forename: S
authors.initials: S
authors.lastname: Galović
authors.forename: Zoran
authors.initials: Z
authors.lastname: Ivić
mesh_terms: D000465:Algorithms; D001703:Biophysics / Q000379:methods*; D003460:Crystallization; D005583:Fourier Analysis; D006860:Hydrogen Bonding; D046911:Macromolecular Substances / Q000737:chemistry*; D015233:Models, Statistical; D055095:Optics and Photonics; D060739:Phonons; D011487:Protein Conformation; D013696:Temperature; D014732:Vibration
chemical_list: D046911:Macromolecular Substances