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  Dynamical Metal to Charge-Density-Wave Junctions in an Atomic Wire Array

Song, S. K., Samad, A., Wippermann, S. M., & Yeom, H. W. (2019). Dynamical Metal to Charge-Density-Wave Junctions in an Atomic Wire Array. Nano Letters, 19(8), 5769-5773. doi:10.1021/acs.nanolett.9b02438.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-953E-D Version Permalink: http://hdl.handle.net/21.11116/0000-0006-9540-9
Genre: Journal Article

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 Creators:
Song, Sun Kyu1, 2, Author              
Samad, Abdus3, Author              
Wippermann, Stefan Martin3, Author              
Yeom, Han Woong4, 5, Author              
Affiliations:
1Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), Pohang 37673, Republic of Korea, ou_persistent22              
2Department of Physics, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea, ou_persistent22              
3Atomistic Modelling, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863350              
4Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), Pohang 790-784, South Korea, ou_persistent22              
5Department of Physics, Pohang University of Science and Techonlogy, 77 Cheongam-Ro, Pohang 790-784, South Korea, ou_persistent22              

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Free keywords: PHASE-SEPARATION; SUPERCONDUCTIVITY; INSTABILITY; CHAINS; STATEChemistry; Science & Technology - Other Topics; Materials Science; Physics; Atomic wire; charge-density-wave; electronic phase separation; metal-insulator junction; scanning tunneling microscopy/spectroscopy;
 Abstract: We investigated the atomic scale electronic phase separation emerging from a quasi-1D charge-density-wave (CDW) state of the In atomic wire array on a Si(111) surface. Spatial variations of the CDW gap and amplitude are quantified for various interfaces of metallic and insulating CDW domains by scanning tunneling microscopy and spectroscopy (STS). The strong anisotropy in the metal-insulator junctions is revealed with an order of magnitude difference in the interwire and intrawire junction lengths of 0.4 and 7 nm, respectively. The intrawire junction length is reduced dramatically by an atomic scale impurity, indicating the tunability of the metal-insulator junction in an atomic scale. Density functional theory calculations disclose the dynamical nature of the intrawire junction formation and tunability.

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Language(s): eng - English
 Dates: 2019-07-052019-08-14
 Publication Status: Published in print
 Pages: 5
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Degree: -

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Title: Nano Letters
  Abbreviation : Nano Lett.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Washington, DC : American Chemical Society
Pages: 5 Volume / Issue: 19 (8) Sequence Number: - Start / End Page: 5769 - 5773 Identifier: ISSN: 1530-6984
CoNE: https://pure.mpg.de/cone/journals/resource/110978984570403