Subkelvin lateral thermal transport in diffusive graphene

dc.contributor.author

Draelos, AW

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Silverman, A

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Eniwaye, B

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Arnault, EG

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Ke, CT

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Wei, MT

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Vlassiouk, I

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Borzenets, IV

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Amet, F

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Finkelstein, G

dc.date.accessioned

2019-12-22T00:45:01Z

dc.date.available

2019-12-22T00:45:01Z

dc.date.issued

2019-03-29

dc.date.updated

2019-12-22T00:44:55Z

dc.description.abstract

© 2019 American Physical Society. In this work, we report on hot carrier diffusion in graphene across large enough length scales that the carriers are not thermalized across the crystal. The carriers are injected into graphene at one site and their thermal transport is studied as a function of applied power and distance from the heating source, up to tens of micrometers away. Superconducting contacts prevent out-diffusion of hot carriers to isolate the electron-phonon coupling as the sole channel for thermal relaxation. As local thermometers, we use the amplitude of the universal conductance fluctuations, which varies monotonically as a function of temperature. By measuring the electron temperature simultaneously along the length we observe a thermal gradient which results from the competition between electron-phonon cooling and lateral heat flow.

dc.identifier.issn

2469-9950

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2469-9969

dc.identifier.uri

https://hdl.handle.net/10161/19632

dc.language

en

dc.publisher

American Physical Society (APS)

dc.relation.ispartof

Physical Review B

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10.1103/PhysRevB.99.125427

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Science & Technology

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Technology

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Physical Sciences

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Materials Science, Multidisciplinary

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Physics, Applied

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Physics, Condensed Matter

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Materials Science

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Physics

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CHEMICAL-VAPOR-DEPOSITION

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HOT CARRIERS

dc.title

Subkelvin lateral thermal transport in diffusive graphene

dc.type

Journal article

duke.contributor.orcid

Draelos, AW|0000-0002-9046-3193

duke.contributor.orcid

Wei, MT|0000-0002-2279-3721

duke.contributor.orcid

Finkelstein, G|0000-0002-0883-0741

pubs.issue

12

pubs.organisational-group

Staff

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Duke

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Physics

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Trinity College of Arts & Sciences

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Duke Institute for Brain Sciences

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University Institutes and Centers

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Institutes and Provost's Academic Units

pubs.publication-status

Published

pubs.volume

99

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