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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

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • 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