Optical properties of extreme tellurium nanowires formed in subnanometer-diameter channels

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Optical properties of extreme tellurium nanowires formed in subnanometer-diameter channels. / Poborchii, Vladimir V.; Fokin, Alexander V.; Shklyaev, Alexander A.

In: Nanoscale Advances, Vol. 5, No. 1, 19.11.2022, p. 220-227.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{3ab3e2a7dc0a43b79c6269496db0b6fe,

title = "Optical properties of extreme tellurium nanowires formed in subnanometer-diameter channels",

abstract = "Single tellurium (Te) chains attract much attention as extreme nanowires with unique electronic and spintronic properties. Here, we encapsulate Te from a melt into channels of zeolites AFI (∼0.73 nm-channel diameter) and mordenite (MOR, ∼0.67 × 0.7 nm2 channel cross-section) via high-pressure injection. Using polarized Raman and optical absorption spectra (RS and OAS) of zeolite single crystals with Te (AFI-Te and MOR-Te), we discriminate between features of Te chains and rings formed in the zeolites. We demonstrate good agreement of AFI-Te-chain RS and OAS with the calculated single Te-helix phonon and electron spectra. This suggests a very weak interaction of the AFI-Te-chain with the zeolite and its nearly perfect helix structure lacking inversion/mirror symmetry. An AFI-Te OAS feature, attributed to the electron transitions between Te-helix-Rashba-split valence and conduction bands confirms its 1D-electron-band origin with predicted possibilities of identifying Majorana fermions, manipulating spin transport and realizing topological superconductivity.",

author = "Poborchii, {Vladimir V.} and Fokin, {Alexander V.} and Shklyaev, {Alexander A.}",

note = "Funding Information: We thank V. N. Bogomolov for mordenite, J. Caro for AFI-crystals and S. G. Romanov for MOR-Te fabrication. Alexander Shklyaev is grateful to the Ministry of Science and Higher Education of the Russian Federation, project # 075-15-2020-797 (13.1902.21.0024). Publisher Copyright: {\textcopyright} 2023 RSC.",

year = "2022",

month = nov,

day = "19",

doi = "10.1039/d2na00590e",

language = "English",

volume = "5",

pages = "220--227",

journal = "Nanoscale Advances",

issn = "2516-0230",

publisher = "Royal Society of Chemistry",

number = "1",

}

RIS

TY - JOUR

T1 - Optical properties of extreme tellurium nanowires formed in subnanometer-diameter channels

AU - Poborchii, Vladimir V.

AU - Fokin, Alexander V.

AU - Shklyaev, Alexander A.

N1 - Funding Information: We thank V. N. Bogomolov for mordenite, J. Caro for AFI-crystals and S. G. Romanov for MOR-Te fabrication. Alexander Shklyaev is grateful to the Ministry of Science and Higher Education of the Russian Federation, project # 075-15-2020-797 (13.1902.21.0024). Publisher Copyright: © 2023 RSC.

PY - 2022/11/19

Y1 - 2022/11/19

N2 - Single tellurium (Te) chains attract much attention as extreme nanowires with unique electronic and spintronic properties. Here, we encapsulate Te from a melt into channels of zeolites AFI (∼0.73 nm-channel diameter) and mordenite (MOR, ∼0.67 × 0.7 nm2 channel cross-section) via high-pressure injection. Using polarized Raman and optical absorption spectra (RS and OAS) of zeolite single crystals with Te (AFI-Te and MOR-Te), we discriminate between features of Te chains and rings formed in the zeolites. We demonstrate good agreement of AFI-Te-chain RS and OAS with the calculated single Te-helix phonon and electron spectra. This suggests a very weak interaction of the AFI-Te-chain with the zeolite and its nearly perfect helix structure lacking inversion/mirror symmetry. An AFI-Te OAS feature, attributed to the electron transitions between Te-helix-Rashba-split valence and conduction bands confirms its 1D-electron-band origin with predicted possibilities of identifying Majorana fermions, manipulating spin transport and realizing topological superconductivity.

AB - Single tellurium (Te) chains attract much attention as extreme nanowires with unique electronic and spintronic properties. Here, we encapsulate Te from a melt into channels of zeolites AFI (∼0.73 nm-channel diameter) and mordenite (MOR, ∼0.67 × 0.7 nm2 channel cross-section) via high-pressure injection. Using polarized Raman and optical absorption spectra (RS and OAS) of zeolite single crystals with Te (AFI-Te and MOR-Te), we discriminate between features of Te chains and rings formed in the zeolites. We demonstrate good agreement of AFI-Te-chain RS and OAS with the calculated single Te-helix phonon and electron spectra. This suggests a very weak interaction of the AFI-Te-chain with the zeolite and its nearly perfect helix structure lacking inversion/mirror symmetry. An AFI-Te OAS feature, attributed to the electron transitions between Te-helix-Rashba-split valence and conduction bands confirms its 1D-electron-band origin with predicted possibilities of identifying Majorana fermions, manipulating spin transport and realizing topological superconductivity.

UR - http://www.scopus.com/inward/record.url?scp=85143914935&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/a67629d7-9b70-3847-89ca-606b521b7643/

U2 - 10.1039/d2na00590e

DO - 10.1039/d2na00590e

M3 - Article

C2 - 36605814

AN - SCOPUS:85143914935

VL - 5

SP - 220

EP - 227

JO - Nanoscale Advances

JF - Nanoscale Advances

SN - 2516-0230

IS - 1

ER -

ID: 40911667