Polaron conductivity mechanism in oxalic acid dihydrate:acconductivity experiment

Autor:	Adrijan Levstik, Vid Bobnar, I. Levstik, Cene Filipič, Dušan Hadži
Rok vydání:	2006
Předmět:	Materials science Condensed matter physics Electrical resistivity and conductivity Exponent Charge (physics) Charge carrier Atmospheric temperature range Conductivity Condensed Matter Physics Polaron Quantum tunnelling Electronic Optical and Magnetic Materials
Zdroj:	Physical Review B. 74
ISSN:	1550-235X 1098-0121
DOI:	10.1103/physrevb.74.153104
Popis:	The ac electrical conductivity of the oxalic acid dihydrate ($\ensuremath{\alpha}$-POX) was investigated as a function of the frequency and temperature. The real part of the complex ac electrical conductivity was found to follow the universal dielectric response ${\ensuremath{\sigma}}^{\ensuremath{'}}\ensuremath{\propto}{\ensuremath{\nu}}^{s}$, indicating that hopping or tunneling of localized charge carriers governs the electrical transport. A detailed analysis of the temperature dependence of the exponent $s$ revealed that in a broad temperature range $50\char21{}200\phantom{\rule{0.3em}{0ex}}\mathrm{K}$ the tunneling of polarons is the dominating charge transport mechanism.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::61f876db57d1e8a1bdff809749a9f699 https://doi.org/10.1103/physrevb.74.153104 Zobrazit plný text záznamu