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Direct observation of one-dimensional disordered diffusion channel in a chain-like thermoelectric with ultralow thermal conductivity

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Direct observation of one-dimensional disordered diffusion channel in a chain-like thermoelectric with ultralow thermal conductivity. / Zhang, Jiawei; Roth, Nikolaj; Tolborg, Kasper et al.

In: Nature Communications, Vol. 12, No. 1, 6709, 12.2021.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

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Zhang J, Roth N, Tolborg K, Takahashi S, Song L, Bondesgaard M et al. Direct observation of one-dimensional disordered diffusion channel in a chain-like thermoelectric with ultralow thermal conductivity. Nature Communications. 2021 Dec;12(1):6709. doi: 10.1038/s41467-021-27007-y

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Zhang, Jiawei ; Roth, Nikolaj ; Tolborg, Kasper et al. / Direct observation of one-dimensional disordered diffusion channel in a chain-like thermoelectric with ultralow thermal conductivity. In: Nature Communications. 2021 ; Vol. 12, No. 1.

Bibtex

@article{adaaec5a9a1d4fb185fb6f4a627bed4b,
title = "Direct observation of one-dimensional disordered diffusion channel in a chain-like thermoelectric with ultralow thermal conductivity",
abstract = "Structural disorder, highly effective in reducing thermal conductivity, is important in technological applications such as thermal barrier coatings and thermoelectrics. In particular, interstitial, disordered, diffusive atoms are common in complex crystal structures with ultralow thermal conductivity, but are rarely found in simple crystalline solids. Combining single-crystal synchrotron X-ray diffraction, the maximum entropy method, diffuse scattering, and theoretical calculations, here we report the direct observation of one-dimensional disordered In 1+ chains in a simple chain-like thermoelectric InTe, which contains a significant In 1+ vacancy along with interstitial indium sites. Intriguingly, the disordered In 1+ chains undergo a static-dynamic transition with increasing temperature to form a one-dimensional diffusion channel, which is attributed to a low In 1+-ion migration energy barrier along the c direction, a general feature in many other TlSe-type compounds. Our work provides a basis towards understanding ultralow thermal conductivity with weak temperature dependence in TlSe-type chain-like materials. ",
keywords = "CRYSTALS, MAXIMUM-ENTROPY-METHOD, TRANSPORT",
author = "Jiawei Zhang and Nikolaj Roth and Kasper Tolborg and Seiya Takahashi and Lirong Song and Martin Bondesgaard and Eiji Nishibori and Iversen, {Bo Brummerstedt}",
note = "{\textcopyright} 2021. The Author(s).",
year = "2021",
month = dec,
doi = "10.1038/s41467-021-27007-y",
language = "English",
volume = "12",
journal = "Nature Communications",
issn = "2041-1723",
publisher = "Nature Publishing Group",
number = "1",

}

RIS

TY - JOUR

T1 - Direct observation of one-dimensional disordered diffusion channel in a chain-like thermoelectric with ultralow thermal conductivity

AU - Zhang, Jiawei

AU - Roth, Nikolaj

AU - Tolborg, Kasper

AU - Takahashi, Seiya

AU - Song, Lirong

AU - Bondesgaard, Martin

AU - Nishibori, Eiji

AU - Iversen, Bo Brummerstedt

N1 - © 2021. The Author(s).

PY - 2021/12

Y1 - 2021/12

N2 - Structural disorder, highly effective in reducing thermal conductivity, is important in technological applications such as thermal barrier coatings and thermoelectrics. In particular, interstitial, disordered, diffusive atoms are common in complex crystal structures with ultralow thermal conductivity, but are rarely found in simple crystalline solids. Combining single-crystal synchrotron X-ray diffraction, the maximum entropy method, diffuse scattering, and theoretical calculations, here we report the direct observation of one-dimensional disordered In 1+ chains in a simple chain-like thermoelectric InTe, which contains a significant In 1+ vacancy along with interstitial indium sites. Intriguingly, the disordered In 1+ chains undergo a static-dynamic transition with increasing temperature to form a one-dimensional diffusion channel, which is attributed to a low In 1+-ion migration energy barrier along the c direction, a general feature in many other TlSe-type compounds. Our work provides a basis towards understanding ultralow thermal conductivity with weak temperature dependence in TlSe-type chain-like materials.

AB - Structural disorder, highly effective in reducing thermal conductivity, is important in technological applications such as thermal barrier coatings and thermoelectrics. In particular, interstitial, disordered, diffusive atoms are common in complex crystal structures with ultralow thermal conductivity, but are rarely found in simple crystalline solids. Combining single-crystal synchrotron X-ray diffraction, the maximum entropy method, diffuse scattering, and theoretical calculations, here we report the direct observation of one-dimensional disordered In 1+ chains in a simple chain-like thermoelectric InTe, which contains a significant In 1+ vacancy along with interstitial indium sites. Intriguingly, the disordered In 1+ chains undergo a static-dynamic transition with increasing temperature to form a one-dimensional diffusion channel, which is attributed to a low In 1+-ion migration energy barrier along the c direction, a general feature in many other TlSe-type compounds. Our work provides a basis towards understanding ultralow thermal conductivity with weak temperature dependence in TlSe-type chain-like materials.

KW - CRYSTALS

KW - MAXIMUM-ENTROPY-METHOD

KW - TRANSPORT

U2 - 10.1038/s41467-021-27007-y

DO - 10.1038/s41467-021-27007-y

M3 - Journal article

C2 - 34795243

VL - 12

JO - Nature Communications

JF - Nature Communications

SN - 2041-1723

IS - 1

M1 - 6709

ER -