Mobile Small Polaron
نویسندگان
چکیده
منابع مشابه
Small polaron hopping in spinel manganates
The temperature dependence of small polaron hopping conduction in ceramic spinel NiMn2O4+ thermistor material has been investigated. We used a theoretical framework based on a random resistor network model to describe small polaron nearest-neighbor hopping NNH and variable range hopping VRH , following the principles of Shklovskii and Efros. We find that in printed thick films and in pressed pe...
متن کاملSmall hole polaron in CdTe: Cd-vacancy revisited
The characteristics of electronic states of Cd-vacancies in CdTe, an important semiconductor for various technological applications, are under debate both from theoretical and experimental points of view. Experimentally, the Cd-vacancy in its negative charge state is found to have C3v symmetry and a (-1/-2) transition level at 0.4 eV. Our first principles density functional calculations with hy...
متن کاملQuantum simulation of small-polaron formation with trapped ions.
We propose an analog quantum simulation of small-polaron physics using a one-dimensional system of trapped ions acted upon by off-resonant standing waves. This system, envisioned as an array of microtraps, in the single-excitation case allows the realization of the antiadiabatic regime of the Holstein model. We show that the strong excitation-phonon coupling regime, characterized by the formati...
متن کاملTheory of small-polaron band conduction in ultrapure organic crystals
We present a novel theory of charge-carrier mobilities in organic molecular crystals of high purity. Our approach is based on Holstein’s original concept of small-polaron bands but generalized with respect to the inclusion of nonlocal electron-phonon coupling. We derive an explicit expression for the mobilities as a function of temperature and, using ab-initio methods to obtain the material par...
متن کاملCorrelated Small Polaron Transport in Mixed Valence Oxides
The electrical transport properties of mixed fdtes, oxidic superconductors and GMR compounds having ions in mixed valence state are shown to originate fhm the correlated motion of polarons and scattering by the spin disorder. The tramprt e e s of mixed valence compounds exhibit anomalous characteristics. In magnetite, it leads to a orderdisorder transition at 120 K with A-type anomaly in the sp...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review Letters
سال: 1999
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.82.807