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Negative local resistance caused by viscous electron backflow in graphene

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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Negative local resistance caused by viscous electron backflow in graphene. / Bandurin, D. A.; Torre, I.; Kumar, R. Krishna et al.
In: Science, Vol. 351, No. 6277, 04.03.2016, p. 1055-1058.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Bandurin, DA, Torre, I, Kumar, RK, Ben Shalom, M, Tomadin, A, Principi, A, Auton, GH, Khestanova, E, Novoselov, KS, Grigorieva, IV, Ponomarenko, LA, Geim, AK & Polini, M 2016, 'Negative local resistance caused by viscous electron backflow in graphene', Science, vol. 351, no. 6277, pp. 1055-1058. https://doi.org/10.1126/science.aad0201

APA

Bandurin, D. A., Torre, I., Kumar, R. K., Ben Shalom, M., Tomadin, A., Principi, A., Auton, G. H., Khestanova, E., Novoselov, K. S., Grigorieva, I. V., Ponomarenko, L. A., Geim, A. K., & Polini, M. (2016). Negative local resistance caused by viscous electron backflow in graphene. Science, 351(6277), 1055-1058. https://doi.org/10.1126/science.aad0201

Vancouver

Bandurin DA, Torre I, Kumar RK, Ben Shalom M, Tomadin A, Principi A et al. Negative local resistance caused by viscous electron backflow in graphene. Science. 2016 Mar 4;351(6277):1055-1058. Epub 2016 Feb 10. doi: 10.1126/science.aad0201

Author

Bandurin, D. A. ; Torre, I. ; Kumar, R. Krishna et al. / Negative local resistance caused by viscous electron backflow in graphene. In: Science. 2016 ; Vol. 351, No. 6277. pp. 1055-1058.

Bibtex

@article{d440bd80f32449fab2ead827828c7f02,
title = "Negative local resistance caused by viscous electron backflow in graphene",
abstract = "Graphene hosts a unique electron system in which electron-phonon scattering is extremely weak but electron-electron collisions are sufficiently frequent to provide local equilibrium above the temperature of liquid nitrogen. Under these conditions, electrons can behave as a viscous liquid and exhibit hydrodynamic phenomena similar to classical liquids. Here we report strong evidence for this transport regime. We found that doped graphene exhibits an anomalous (negative) voltage drop near current-injection contacts, which is attributed to the formation of submicrometer-size whirlpools in the electron flow. The viscosity of graphene's electron liquid is found to be similar to 0.1 squaremeters per second, an order of magnitude higher than that of honey, in agreement with many-body theory. Our work demonstrates the possibility of studying electron hydrodynamics using high-quality graphene.",
keywords = "TEMPERATURE",
author = "Bandurin, {D. A.} and I. Torre and Kumar, {R. Krishna} and {Ben Shalom}, M. and A. Tomadin and A. Principi and Auton, {G. H.} and E. Khestanova and Novoselov, {K. S.} and Grigorieva, {I. V.} and Ponomarenko, {L. A.} and Geim, {A. K.} and M. Polini",
year = "2016",
month = mar,
day = "4",
doi = "10.1126/science.aad0201",
language = "English",
volume = "351",
pages = "1055--1058",
journal = "Science",
issn = "0036-8075",
publisher = "American Association for the Advancement of Science",
number = "6277",

}

RIS

TY - JOUR

T1 - Negative local resistance caused by viscous electron backflow in graphene

AU - Bandurin, D. A.

AU - Torre, I.

AU - Kumar, R. Krishna

AU - Ben Shalom, M.

AU - Tomadin, A.

AU - Principi, A.

AU - Auton, G. H.

AU - Khestanova, E.

AU - Novoselov, K. S.

AU - Grigorieva, I. V.

AU - Ponomarenko, L. A.

AU - Geim, A. K.

AU - Polini, M.

PY - 2016/3/4

Y1 - 2016/3/4

N2 - Graphene hosts a unique electron system in which electron-phonon scattering is extremely weak but electron-electron collisions are sufficiently frequent to provide local equilibrium above the temperature of liquid nitrogen. Under these conditions, electrons can behave as a viscous liquid and exhibit hydrodynamic phenomena similar to classical liquids. Here we report strong evidence for this transport regime. We found that doped graphene exhibits an anomalous (negative) voltage drop near current-injection contacts, which is attributed to the formation of submicrometer-size whirlpools in the electron flow. The viscosity of graphene's electron liquid is found to be similar to 0.1 squaremeters per second, an order of magnitude higher than that of honey, in agreement with many-body theory. Our work demonstrates the possibility of studying electron hydrodynamics using high-quality graphene.

AB - Graphene hosts a unique electron system in which electron-phonon scattering is extremely weak but electron-electron collisions are sufficiently frequent to provide local equilibrium above the temperature of liquid nitrogen. Under these conditions, electrons can behave as a viscous liquid and exhibit hydrodynamic phenomena similar to classical liquids. Here we report strong evidence for this transport regime. We found that doped graphene exhibits an anomalous (negative) voltage drop near current-injection contacts, which is attributed to the formation of submicrometer-size whirlpools in the electron flow. The viscosity of graphene's electron liquid is found to be similar to 0.1 squaremeters per second, an order of magnitude higher than that of honey, in agreement with many-body theory. Our work demonstrates the possibility of studying electron hydrodynamics using high-quality graphene.

KW - TEMPERATURE

U2 - 10.1126/science.aad0201

DO - 10.1126/science.aad0201

M3 - Journal article

VL - 351

SP - 1055

EP - 1058

JO - Science

JF - Science

SN - 0036-8075

IS - 6277

ER -