Charge transport in thin layer NaxCoO2 (x similar to 0.63) studied by terahertz spectroscopy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F16%3A00470137" target="_blank" >RIV/68378271:_____/16:00470137 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388980:_____/16:00470137

Výsledek na webu

<a href="http://dx.doi.org/10.1088/0953-8984/28/35/355601" target="_blank" >http://dx.doi.org/10.1088/0953-8984/28/35/355601</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/0953-8984/28/35/355601" target="_blank" >10.1088/0953-8984/28/35/355601</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Charge transport in thin layer NaxCoO2 (x similar to 0.63) studied by terahertz spectroscopy

Popis výsledku v původním jazyce

Charge transport in Na0.63CoO2 thin film deposited by a spin-coating method was investigated experimentally by time-domain terahertz spectroscopy and theoretically using Monte Carlo calculations of charge response in nano-structured materials. The dominating type of transport mechanism over the entire investigated range of temperatures (20-300 K) is a metallic-like conductivity of charges partly confined in constituting nano-sized grains. Due to the granular character of our thin film, the scattering time at low temperatures is limited by scattering on grain boundaries and the conductivity is strongly suppressed due to capture of a major fraction of charge carriers in deep traps. Nevertheless, our experimental setup and the applied model allowed us to distinguish the parameters related to the grain interior from those influenced by grain boundaries, and to conclude that the metallic type of conductivity is the intrinsic property relevant to single crystal materials.

Název v anglickém jazyce

Charge transport in thin layer NaxCoO2 (x similar to 0.63) studied by terahertz spectroscopy

Popis výsledku anglicky

Charge transport in Na0.63CoO2 thin film deposited by a spin-coating method was investigated experimentally by time-domain terahertz spectroscopy and theoretically using Monte Carlo calculations of charge response in nano-structured materials. The dominating type of transport mechanism over the entire investigated range of temperatures (20-300 K) is a metallic-like conductivity of charges partly confined in constituting nano-sized grains. Due to the granular character of our thin film, the scattering time at low temperatures is limited by scattering on grain boundaries and the conductivity is strongly suppressed due to capture of a major fraction of charge carriers in deep traps. Nevertheless, our experimental setup and the applied model allowed us to distinguish the parameters related to the grain interior from those influenced by grain boundaries, and to conclude that the metallic type of conductivity is the intrinsic property relevant to single crystal materials.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Physics-Condensed Matter

ISSN

0953-8984

e-ISSN

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Svazek periodika

28

Číslo periodika v rámci svazku

35

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

6

Strana od-do

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Kód UT WoS článku

000380740000014

EID výsledku v databázi Scopus

2-s2.0-84979520193