Effects of grain boundaries on THz conductivity in the crystalline states of Ge2Sb2Te5 phase-change materials: correlation with DC loss
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00553761" target="_blank" >RIV/68378271:_____/21:00553761 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1002/pssr.202000411" target="_blank" >https://doi.org/10.1002/pssr.202000411</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/pssr.202000411" target="_blank" >10.1002/pssr.202000411</a>
Alternative languages
Result language
angličtina
Original language name
Effects of grain boundaries on THz conductivity in the crystalline states of Ge2Sb2Te5 phase-change materials: correlation with DC loss
Original language description
Herein, in situ temperature-dependent THz and DC conductivity measurements in the crystalline states of Ge2Sb2Te5 (GST225) are performed at relatively high temperatures (>300 K). As observed in many nanomaterials, a non-Drude type of THz conductivity is found in the crystalline state of phase-change (PC) materials. Both the intra- and intergrain effects can be separated in the THz and DC conductivity. It is shown that grain boundaries significantly affect the THz and DC conductivities of the crystalline phase (distorted rock salt structure). The experimentally observed DC Hall mobility is different from the intragrain mobility extracted from the THz conductivity, suggesting that a series sequence of intra- and intergrain transport mechanisms controls the electronic transport in the crystalline state of GST225.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physica Status Solidi
ISSN
1862-6254
e-ISSN
1862-6270
Volume of the periodical
15
Issue of the periodical within the volume
3
Country of publishing house
DE - GERMANY
Number of pages
5
Pages from-to
2000411
UT code for WoS article
000577423100001
EID of the result in the Scopus database
2-s2.0-85092402145