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Cyclotron resonance of the magnetic ratchet effect and second harmonic generation in bilayer graphene

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Cyclotron resonance of the magnetic ratchet effect and second harmonic generation in bilayer graphene. / Kheirabadi, Narjes; McCann, Edward; Falko, Vladimir.

In: Physical review B, Vol. 97, No. 7, 075415, 15.02.2018.

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@article{bed2439f97e1497c82652125254865a3,
title = "Cyclotron resonance of the magnetic ratchet effect and second harmonic generation in bilayer graphene",
abstract = "We model the magnetic ratchet effect in bilayer graphene in which a dc electric current is produced by an ac electric field of frequency ω in the presence of a steady in-plane magnetic field and inversion-symmetry breaking. In bilayer graphene, the ratchet effect is tunable by an external metallic gate which breaks inversion symmetry. For zero in-plane magnetic field, we show that trigonal warping and inversion-symmetry breaking are able to produce a large dc valley current, but not a non-zero total dc charge current. For the magnetic ratchet in a tilted magnetic field, the perpendicular field component induces cyclotron motion with frequency ωc and we find that the dc current displays cyclotron resonance at ωc = ω, although this peak in the current is actually smaller than its value at ωc = 0. Second harmonic generation, however, is greatly enhanced by resonances at ωc = ω and ωc = 2ω for which the current is generally much larger than at ωc = 0.",
keywords = "Magnetotransport, Optoelectronics, Bilayer films, Graphene, Tight-binding model",
author = "Narjes Kheirabadi and Edward McCann and Vladimir Falko",
note = "{\textcopyright}2018 American Physical Society",
year = "2018",
month = feb
day = "15",
doi = "10.1103/PhysRevB.97.075415",
language = "English",
volume = "97",
journal = "Physical Review B: Condensed Matter and Materials Physics",
issn = "1098-0121",
publisher = "AMER PHYSICAL SOC",
number = "7",

}

RIS

TY - JOUR

T1 - Cyclotron resonance of the magnetic ratchet effect and second harmonic generation in bilayer graphene

AU - Kheirabadi, Narjes

AU - McCann, Edward

AU - Falko, Vladimir

N1 - ©2018 American Physical Society

PY - 2018/2/15

Y1 - 2018/2/15

N2 - We model the magnetic ratchet effect in bilayer graphene in which a dc electric current is produced by an ac electric field of frequency ω in the presence of a steady in-plane magnetic field and inversion-symmetry breaking. In bilayer graphene, the ratchet effect is tunable by an external metallic gate which breaks inversion symmetry. For zero in-plane magnetic field, we show that trigonal warping and inversion-symmetry breaking are able to produce a large dc valley current, but not a non-zero total dc charge current. For the magnetic ratchet in a tilted magnetic field, the perpendicular field component induces cyclotron motion with frequency ωc and we find that the dc current displays cyclotron resonance at ωc = ω, although this peak in the current is actually smaller than its value at ωc = 0. Second harmonic generation, however, is greatly enhanced by resonances at ωc = ω and ωc = 2ω for which the current is generally much larger than at ωc = 0.

AB - We model the magnetic ratchet effect in bilayer graphene in which a dc electric current is produced by an ac electric field of frequency ω in the presence of a steady in-plane magnetic field and inversion-symmetry breaking. In bilayer graphene, the ratchet effect is tunable by an external metallic gate which breaks inversion symmetry. For zero in-plane magnetic field, we show that trigonal warping and inversion-symmetry breaking are able to produce a large dc valley current, but not a non-zero total dc charge current. For the magnetic ratchet in a tilted magnetic field, the perpendicular field component induces cyclotron motion with frequency ωc and we find that the dc current displays cyclotron resonance at ωc = ω, although this peak in the current is actually smaller than its value at ωc = 0. Second harmonic generation, however, is greatly enhanced by resonances at ωc = ω and ωc = 2ω for which the current is generally much larger than at ωc = 0.

KW - Magnetotransport

KW - Optoelectronics

KW - Bilayer films

KW - Graphene

KW - Tight-binding model

U2 - 10.1103/PhysRevB.97.075415

DO - 10.1103/PhysRevB.97.075415

M3 - Journal article

VL - 97

JO - Physical Review B: Condensed Matter and Materials Physics

JF - Physical Review B: Condensed Matter and Materials Physics

SN - 1098-0121

IS - 7

M1 - 075415

ER -