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Butterfly magnetoresistance, quasi-2D Dirac Fermi surface and topological phase transition in ZrSiS
Magnetoresistance (MR), the change of a material’s electrical resistance in response to an applied magnetic field, is a technologically important property that has been the topic of intense study for more than a quarter century. We report the observation of an unusual “butterfly”-shaped titanic angu...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Association for the Advancement of Science
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5161428/ https://www.ncbi.nlm.nih.gov/pubmed/28028541 http://dx.doi.org/10.1126/sciadv.1601742 |
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author | Ali, Mazhar N. Schoop, Leslie M. Garg, Chirag Lippmann, Judith M. Lara, Erik Lotsch, Bettina Parkin, Stuart S. P. |
author_facet | Ali, Mazhar N. Schoop, Leslie M. Garg, Chirag Lippmann, Judith M. Lara, Erik Lotsch, Bettina Parkin, Stuart S. P. |
author_sort | Ali, Mazhar N. |
collection | PubMed |
description | Magnetoresistance (MR), the change of a material’s electrical resistance in response to an applied magnetic field, is a technologically important property that has been the topic of intense study for more than a quarter century. We report the observation of an unusual “butterfly”-shaped titanic angular magnetoresistance (AMR) in the nonmagnetic Dirac material, ZrSiS, which we find to be the most conducting sulfide known, with a 2-K resistivity as low as 48(4) nΩ⋅cm. The MR in ZrSiS is large and positive, reaching nearly 1.8 × 10(5) percent at 9 T and 2 K at a 45° angle between the applied current (I || a) and the applied field (90° is H || c). Approaching 90°, a “dip” is seen in the AMR, which, by analyzing Shubnikov de Haas oscillations at different angles, we find to coincide with a very sharp topological phase transition unlike any seen in other known Dirac/Weyl materials. We find that ZrSiS has a combination of two-dimensional (2D) and 3D Dirac pockets comprising its Fermi surface and that the combination of high-mobility carriers and multiple pockets in ZrSiS allows for large property changes to occur as a function of angle between applied fields. This makes it a promising platform to study the physics stemming from the coexistence of 2D and 3D Dirac electrons as well as opens the door to creating devices focused on switching between different parts of the Fermi surface and different topological states. |
format | Online Article Text |
id | pubmed-5161428 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | American Association for the Advancement of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-51614282016-12-27 Butterfly magnetoresistance, quasi-2D Dirac Fermi surface and topological phase transition in ZrSiS Ali, Mazhar N. Schoop, Leslie M. Garg, Chirag Lippmann, Judith M. Lara, Erik Lotsch, Bettina Parkin, Stuart S. P. Sci Adv Research Articles Magnetoresistance (MR), the change of a material’s electrical resistance in response to an applied magnetic field, is a technologically important property that has been the topic of intense study for more than a quarter century. We report the observation of an unusual “butterfly”-shaped titanic angular magnetoresistance (AMR) in the nonmagnetic Dirac material, ZrSiS, which we find to be the most conducting sulfide known, with a 2-K resistivity as low as 48(4) nΩ⋅cm. The MR in ZrSiS is large and positive, reaching nearly 1.8 × 10(5) percent at 9 T and 2 K at a 45° angle between the applied current (I || a) and the applied field (90° is H || c). Approaching 90°, a “dip” is seen in the AMR, which, by analyzing Shubnikov de Haas oscillations at different angles, we find to coincide with a very sharp topological phase transition unlike any seen in other known Dirac/Weyl materials. We find that ZrSiS has a combination of two-dimensional (2D) and 3D Dirac pockets comprising its Fermi surface and that the combination of high-mobility carriers and multiple pockets in ZrSiS allows for large property changes to occur as a function of angle between applied fields. This makes it a promising platform to study the physics stemming from the coexistence of 2D and 3D Dirac electrons as well as opens the door to creating devices focused on switching between different parts of the Fermi surface and different topological states. American Association for the Advancement of Science 2016-12-16 /pmc/articles/PMC5161428/ /pubmed/28028541 http://dx.doi.org/10.1126/sciadv.1601742 Text en Copyright © 2016, The Authors http://creativecommons.org/licenses/by-nc/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (http://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. |
spellingShingle | Research Articles Ali, Mazhar N. Schoop, Leslie M. Garg, Chirag Lippmann, Judith M. Lara, Erik Lotsch, Bettina Parkin, Stuart S. P. Butterfly magnetoresistance, quasi-2D Dirac Fermi surface and topological phase transition in ZrSiS |
title | Butterfly magnetoresistance, quasi-2D Dirac Fermi surface and topological phase transition in ZrSiS |
title_full | Butterfly magnetoresistance, quasi-2D Dirac Fermi surface and topological phase transition in ZrSiS |
title_fullStr | Butterfly magnetoresistance, quasi-2D Dirac Fermi surface and topological phase transition in ZrSiS |
title_full_unstemmed | Butterfly magnetoresistance, quasi-2D Dirac Fermi surface and topological phase transition in ZrSiS |
title_short | Butterfly magnetoresistance, quasi-2D Dirac Fermi surface and topological phase transition in ZrSiS |
title_sort | butterfly magnetoresistance, quasi-2d dirac fermi surface and topological phase transition in zrsis |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5161428/ https://www.ncbi.nlm.nih.gov/pubmed/28028541 http://dx.doi.org/10.1126/sciadv.1601742 |
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