Particle Collisions and Negative Nonlocal Response of Ballistic Electrons
An electric field that builds in the direction against current, known as negative nonlocal resistance, arises naturally in viscous flows and is thus often taken as a telltale of this regime. Here, we predict negative resistance for the ballistic regime, wherein the ee collision mean free path is gre...
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| Format: | Article |
| Language: | English |
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American Physical Society
2018
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| Online Access: | http://hdl.handle.net/1721.1/118894 https://orcid.org/0000-0001-5980-4140 https://orcid.org/0000-0002-4268-731X |
| _version_ | 1826214284383748096 |
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| author | Shytov, Andrey Kong, Jian Feng Falkovich, Gregory Levitov, Leonid |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Shytov, Andrey Kong, Jian Feng Falkovich, Gregory Levitov, Leonid |
| author_sort | Shytov, Andrey |
| collection | MIT |
| description | An electric field that builds in the direction against current, known as negative nonlocal resistance, arises naturally in viscous flows and is thus often taken as a telltale of this regime. Here, we predict negative resistance for the ballistic regime, wherein the ee collision mean free path is greater than the length scale at which the system is being probed. Therefore, negative resistance alone does not provide strong evidence for the occurrence of the hydrodynamic regime; it must thus be demoted from the rank of irrefutable evidence to that of a mere forerunner. Furthermore, we find that negative response is log enhanced in the ballistic regime by the physics related to the seminal Dorfman-Cohen log divergence due to memory effects in the kinetics of dilute gases. The ballistic regime therefore offers a unique setting for exploring these interesting effects due to electron interactions. |
| first_indexed | 2024-09-23T16:03:10Z |
| format | Article |
| id | mit-1721.1/118894 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T16:03:10Z |
| publishDate | 2018 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/1188942022-09-29T17:52:45Z Particle Collisions and Negative Nonlocal Response of Ballistic Electrons Shytov, Andrey Kong, Jian Feng Falkovich, Gregory Levitov, Leonid Massachusetts Institute of Technology. Department of Physics Kong, Jian Feng Levitov, Leonid An electric field that builds in the direction against current, known as negative nonlocal resistance, arises naturally in viscous flows and is thus often taken as a telltale of this regime. Here, we predict negative resistance for the ballistic regime, wherein the ee collision mean free path is greater than the length scale at which the system is being probed. Therefore, negative resistance alone does not provide strong evidence for the occurrence of the hydrodynamic regime; it must thus be demoted from the rank of irrefutable evidence to that of a mere forerunner. Furthermore, we find that negative response is log enhanced in the ballistic regime by the physics related to the seminal Dorfman-Cohen log divergence due to memory effects in the kinetics of dilute gases. The ballistic regime therefore offers a unique setting for exploring these interesting effects due to electron interactions. 2018-11-05T20:01:00Z 2018-11-05T20:01:00Z 2018-10 2018-06 2018-10-26T18:00:09Z Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/118894 Shytov, Andrey et al. "Particle Collisions and Negative Nonlocal Response of Ballistic Electrons." Physical Review Letters 121, 17 (October 2018): 176805 © 2018 American Physical Society https://orcid.org/0000-0001-5980-4140 https://orcid.org/0000-0002-4268-731X en http://dx.doi.org/10.1103/PhysRevLett.121.176805 Physical Review Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. American Physical Society application/pdf American Physical Society American Physical Society |
| spellingShingle | Shytov, Andrey Kong, Jian Feng Falkovich, Gregory Levitov, Leonid Particle Collisions and Negative Nonlocal Response of Ballistic Electrons |
| title | Particle Collisions and Negative Nonlocal Response of Ballistic Electrons |
| title_full | Particle Collisions and Negative Nonlocal Response of Ballistic Electrons |
| title_fullStr | Particle Collisions and Negative Nonlocal Response of Ballistic Electrons |
| title_full_unstemmed | Particle Collisions and Negative Nonlocal Response of Ballistic Electrons |
| title_short | Particle Collisions and Negative Nonlocal Response of Ballistic Electrons |
| title_sort | particle collisions and negative nonlocal response of ballistic electrons |
| url | http://hdl.handle.net/1721.1/118894 https://orcid.org/0000-0001-5980-4140 https://orcid.org/0000-0002-4268-731X |
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