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Quantum Capacitance of a Topological Insulator-Ferromagnet Interface
We study the quantum capacitance in a topological insulator thin film system magnetized in the in-plane direction in the presence of an out-of-plane magnetic field and hexagonal warping. To first order, the modification in quantum capacitance due to hexagonal warping compared to the clean case, wher...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5364463/ https://www.ncbi.nlm.nih.gov/pubmed/28337992 http://dx.doi.org/10.1038/srep45016 |
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author | Siu, Zhuo Bin Chowdhury, Debashree Jalil, Mansoor B. A. Basu, Banasri |
author_facet | Siu, Zhuo Bin Chowdhury, Debashree Jalil, Mansoor B. A. Basu, Banasri |
author_sort | Siu, Zhuo Bin |
collection | PubMed |
description | We study the quantum capacitance in a topological insulator thin film system magnetized in the in-plane direction in the presence of an out-of-plane magnetic field and hexagonal warping. To first order, the modification in quantum capacitance due to hexagonal warping compared to the clean case, where both the in-plane magnetization and hexagonal warping are absent, is always negative, and increases in magnitude monotonically with the energy difference from the charge neutrality point. In contrast, the change in the quantum capacitance due to in-plane magnetization oscillates with the energy in general, except when a certain relation between the inter-surface coupling, out of plane Zeeman energy splitting and magnetic field strength is satisfied. In this special case, the quantum capacitance remains unchanged by the in-plane magnetization for all energies. |
format | Online Article Text |
id | pubmed-5364463 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-53644632017-03-28 Quantum Capacitance of a Topological Insulator-Ferromagnet Interface Siu, Zhuo Bin Chowdhury, Debashree Jalil, Mansoor B. A. Basu, Banasri Sci Rep Article We study the quantum capacitance in a topological insulator thin film system magnetized in the in-plane direction in the presence of an out-of-plane magnetic field and hexagonal warping. To first order, the modification in quantum capacitance due to hexagonal warping compared to the clean case, where both the in-plane magnetization and hexagonal warping are absent, is always negative, and increases in magnitude monotonically with the energy difference from the charge neutrality point. In contrast, the change in the quantum capacitance due to in-plane magnetization oscillates with the energy in general, except when a certain relation between the inter-surface coupling, out of plane Zeeman energy splitting and magnetic field strength is satisfied. In this special case, the quantum capacitance remains unchanged by the in-plane magnetization for all energies. Nature Publishing Group 2017-03-24 /pmc/articles/PMC5364463/ /pubmed/28337992 http://dx.doi.org/10.1038/srep45016 Text en Copyright © 2017, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Siu, Zhuo Bin Chowdhury, Debashree Jalil, Mansoor B. A. Basu, Banasri Quantum Capacitance of a Topological Insulator-Ferromagnet Interface |
title | Quantum Capacitance of a Topological Insulator-Ferromagnet Interface |
title_full | Quantum Capacitance of a Topological Insulator-Ferromagnet Interface |
title_fullStr | Quantum Capacitance of a Topological Insulator-Ferromagnet Interface |
title_full_unstemmed | Quantum Capacitance of a Topological Insulator-Ferromagnet Interface |
title_short | Quantum Capacitance of a Topological Insulator-Ferromagnet Interface |
title_sort | quantum capacitance of a topological insulator-ferromagnet interface |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5364463/ https://www.ncbi.nlm.nih.gov/pubmed/28337992 http://dx.doi.org/10.1038/srep45016 |
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