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Atomic-scale strain manipulation of a charge density wave
A charge density wave (CDW) is one of the fundamental instabilities of the Fermi surface occurring in a wide range of quantum materials. In dimensions higher than one, where Fermi surface nesting can play only a limited role, the selection of the particular wavevector and geometry of an emerging CDW...
Autores principales: | , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
National Academy of Sciences
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6142222/ https://www.ncbi.nlm.nih.gov/pubmed/29915084 http://dx.doi.org/10.1073/pnas.1718931115 |
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author | Gao, Shang Flicker, Felix Sankar, Raman Zhao, He Ren, Zheng Rachmilowitz, Bryan Balachandar, Sidhika Chou, Fangcheng Burch, Kenneth S. Wang, Ziqiang van Wezel, Jasper Zeljkovic, Ilija |
author_facet | Gao, Shang Flicker, Felix Sankar, Raman Zhao, He Ren, Zheng Rachmilowitz, Bryan Balachandar, Sidhika Chou, Fangcheng Burch, Kenneth S. Wang, Ziqiang van Wezel, Jasper Zeljkovic, Ilija |
author_sort | Gao, Shang |
collection | PubMed |
description | A charge density wave (CDW) is one of the fundamental instabilities of the Fermi surface occurring in a wide range of quantum materials. In dimensions higher than one, where Fermi surface nesting can play only a limited role, the selection of the particular wavevector and geometry of an emerging CDW should in principle be susceptible to controllable manipulation. In this work, we implement a simple method for straining materials compatible with low-temperature scanning tunneling microscopy/spectroscopy (STM/S), and use it to strain-engineer CDWs in 2H-NbSe(2). Our STM/S measurements, combined with theory, reveal how small strain-induced changes in the electronic band structure and phonon dispersion lead to dramatic changes in the CDW ordering wavevector and geometry. Our work unveils the microscopic mechanism of a CDW formation in this system, and can serve as a general tool compatible with a range of spectroscopic techniques to engineer electronic states in any material where local strain or lattice symmetry breaking plays a role. |
format | Online Article Text |
id | pubmed-6142222 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | National Academy of Sciences |
record_format | MEDLINE/PubMed |
spelling | pubmed-61422222018-09-19 Atomic-scale strain manipulation of a charge density wave Gao, Shang Flicker, Felix Sankar, Raman Zhao, He Ren, Zheng Rachmilowitz, Bryan Balachandar, Sidhika Chou, Fangcheng Burch, Kenneth S. Wang, Ziqiang van Wezel, Jasper Zeljkovic, Ilija Proc Natl Acad Sci U S A Physical Sciences A charge density wave (CDW) is one of the fundamental instabilities of the Fermi surface occurring in a wide range of quantum materials. In dimensions higher than one, where Fermi surface nesting can play only a limited role, the selection of the particular wavevector and geometry of an emerging CDW should in principle be susceptible to controllable manipulation. In this work, we implement a simple method for straining materials compatible with low-temperature scanning tunneling microscopy/spectroscopy (STM/S), and use it to strain-engineer CDWs in 2H-NbSe(2). Our STM/S measurements, combined with theory, reveal how small strain-induced changes in the electronic band structure and phonon dispersion lead to dramatic changes in the CDW ordering wavevector and geometry. Our work unveils the microscopic mechanism of a CDW formation in this system, and can serve as a general tool compatible with a range of spectroscopic techniques to engineer electronic states in any material where local strain or lattice symmetry breaking plays a role. National Academy of Sciences 2018-07-03 2018-06-18 /pmc/articles/PMC6142222/ /pubmed/29915084 http://dx.doi.org/10.1073/pnas.1718931115 Text en Copyright © 2018 the Author(s). Published by PNAS. https://creativecommons.org/licenses/by-nc-nd/4.0/ This open access article is distributed under Creative Commons Attribution-NonCommercial-NoDerivatives License 4.0 (CC BY-NC-ND) (https://creativecommons.org/licenses/by-nc-nd/4.0/) . |
spellingShingle | Physical Sciences Gao, Shang Flicker, Felix Sankar, Raman Zhao, He Ren, Zheng Rachmilowitz, Bryan Balachandar, Sidhika Chou, Fangcheng Burch, Kenneth S. Wang, Ziqiang van Wezel, Jasper Zeljkovic, Ilija Atomic-scale strain manipulation of a charge density wave |
title | Atomic-scale strain manipulation of a charge density wave |
title_full | Atomic-scale strain manipulation of a charge density wave |
title_fullStr | Atomic-scale strain manipulation of a charge density wave |
title_full_unstemmed | Atomic-scale strain manipulation of a charge density wave |
title_short | Atomic-scale strain manipulation of a charge density wave |
title_sort | atomic-scale strain manipulation of a charge density wave |
topic | Physical Sciences |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6142222/ https://www.ncbi.nlm.nih.gov/pubmed/29915084 http://dx.doi.org/10.1073/pnas.1718931115 |
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