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Single-parameter pumping in graphene

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Single-parameter pumping in graphene. / San Jose, Pablo; Prada, Elsa; Kohler, Sigmund et al.
In: Physical review B, Vol. 84, No. 15, 155408, 11.10.2011.

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

Harvard

San Jose, P, Prada, E, Kohler, S & Schomerus, H 2011, 'Single-parameter pumping in graphene', Physical review B, vol. 84, no. 15, 155408. https://doi.org/10.1103/PhysRevB.84.155408

APA

San Jose, P., Prada, E., Kohler, S., & Schomerus, H. (2011). Single-parameter pumping in graphene. Physical review B, 84(15), Article 155408. https://doi.org/10.1103/PhysRevB.84.155408

Vancouver

San Jose P, Prada E, Kohler S, Schomerus H. Single-parameter pumping in graphene. Physical review B. 2011 Oct 11;84(15):155408. doi: 10.1103/PhysRevB.84.155408

Author

San Jose, Pablo ; Prada, Elsa ; Kohler, Sigmund et al. / Single-parameter pumping in graphene. In: Physical review B. 2011 ; Vol. 84, No. 15.

Bibtex

@article{562bc7149131442bbaded8f952d51a72,
title = "Single-parameter pumping in graphene",
abstract = "We propose a quantum pump mechanism based on the particular properties of graphene, namely chirality and bipolarity. The underlying physics is the excitation of evanescent modes entering a potential barrier from one lead, while those from the other lead do not reach the driving region. This induces a large nonequilibrium current with electrons stemming from a broad range of energies, in contrast to the narrow resonances that govern the corresponding effect in semiconductor heterostructures. Moreover, the pump mechanism in graphene turns out to be robust, with a simple parameter dependence, which is beneficial for applications. Numerical results from a Floquet scattering formalism are complemented with analytical solutions for small to moderate driving.",
author = "{San Jose}, Pablo and Elsa Prada and Sigmund Kohler and Henning Schomerus",
note = "{\textcopyright}2011 American Physical Society",
year = "2011",
month = oct,
day = "11",
doi = "10.1103/PhysRevB.84.155408",
language = "English",
volume = "84",
journal = "Physical review B",
issn = "1550-235X",
publisher = "AMER PHYSICAL SOC",
number = "15",

}

RIS

TY - JOUR

T1 - Single-parameter pumping in graphene

AU - San Jose, Pablo

AU - Prada, Elsa

AU - Kohler, Sigmund

AU - Schomerus, Henning

N1 - ©2011 American Physical Society

PY - 2011/10/11

Y1 - 2011/10/11

N2 - We propose a quantum pump mechanism based on the particular properties of graphene, namely chirality and bipolarity. The underlying physics is the excitation of evanescent modes entering a potential barrier from one lead, while those from the other lead do not reach the driving region. This induces a large nonequilibrium current with electrons stemming from a broad range of energies, in contrast to the narrow resonances that govern the corresponding effect in semiconductor heterostructures. Moreover, the pump mechanism in graphene turns out to be robust, with a simple parameter dependence, which is beneficial for applications. Numerical results from a Floquet scattering formalism are complemented with analytical solutions for small to moderate driving.

AB - We propose a quantum pump mechanism based on the particular properties of graphene, namely chirality and bipolarity. The underlying physics is the excitation of evanescent modes entering a potential barrier from one lead, while those from the other lead do not reach the driving region. This induces a large nonequilibrium current with electrons stemming from a broad range of energies, in contrast to the narrow resonances that govern the corresponding effect in semiconductor heterostructures. Moreover, the pump mechanism in graphene turns out to be robust, with a simple parameter dependence, which is beneficial for applications. Numerical results from a Floquet scattering formalism are complemented with analytical solutions for small to moderate driving.

U2 - 10.1103/PhysRevB.84.155408

DO - 10.1103/PhysRevB.84.155408

M3 - Journal article

VL - 84

JO - Physical review B

JF - Physical review B

SN - 1550-235X

IS - 15

M1 - 155408

ER -