Helicity-dependent photocurrents in graphene layers excited by midinfrared radiation of a CO2 laser

Chongyun Jiang, V. A. Shalygin, V. Yu Panevin, M. M. Glazov, R. Yakimova, S. Lara-Avila, S. Kubatkin, S. D. Ganichev

Результат исследований: Научные публикации в периодических изданияхстатьянаучнаярецензирование

55 Цитирования (Scopus)

Выдержка

We report the study of the helicity-driven photocurrents in graphene excited by midinfrared light of a CO2 laser. Illuminating an unbiased monolayer sheet of graphene with circularly polarized radiation generates- under oblique incidence-an electric current perpendicular to the plane of incidence, whose sign is reversed by switching the radiation helicity. We show that the current is caused by the interplay of the circular ac Hall effect and the circular photogalvanic effect. By studying the frequency dependence of the current in graphene layers grown on the SiC substrate, we observe that the current exhibits a resonance at frequencies matching the longitudinal optical phonon in SiC.

Язык оригиналаанглийский
Номер статьи125429
ЖурналPhysical Review B - Condensed Matter and Materials Physics
Том84
Номер выпуска12
DOI
СостояниеОпубликовано - 12 сен 2011

Отпечаток

Graphite
Photocurrents
Graphene
photocurrents
graphene
Radiation
Lasers
radiation
incidence
lasers
polarized radiation
Hall effect
Electric currents
electric current
illuminating
Monolayers
Substrates

Предметные области Scopus

  • Электроника, оптика и магнитные материалы
  • Физика конденсатов

Цитировать

Jiang, Chongyun ; Shalygin, V. A. ; Panevin, V. Yu ; Glazov, M. M. ; Yakimova, R. ; Lara-Avila, S. ; Kubatkin, S. ; Ganichev, S. D. / Helicity-dependent photocurrents in graphene layers excited by midinfrared radiation of a CO2 laser. В: Physical Review B - Condensed Matter and Materials Physics. 2011 ; Том 84, № 12.
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Helicity-dependent photocurrents in graphene layers excited by midinfrared radiation of a CO2 laser. / Jiang, Chongyun; Shalygin, V. A.; Panevin, V. Yu; Glazov, M. M.; Yakimova, R.; Lara-Avila, S.; Kubatkin, S.; Ganichev, S. D.

В: Physical Review B - Condensed Matter and Materials Physics, Том 84, № 12, 125429, 12.09.2011.

Результат исследований: Научные публикации в периодических изданияхстатьянаучнаярецензирование

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T1 - Helicity-dependent photocurrents in graphene layers excited by midinfrared radiation of a CO2 laser

AU - Jiang, Chongyun

AU - Shalygin, V. A.

AU - Panevin, V. Yu

AU - Glazov, M. M.

AU - Yakimova, R.

AU - Lara-Avila, S.

AU - Kubatkin, S.

AU - Ganichev, S. D.

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AB - We report the study of the helicity-driven photocurrents in graphene excited by midinfrared light of a CO2 laser. Illuminating an unbiased monolayer sheet of graphene with circularly polarized radiation generates- under oblique incidence-an electric current perpendicular to the plane of incidence, whose sign is reversed by switching the radiation helicity. We show that the current is caused by the interplay of the circular ac Hall effect and the circular photogalvanic effect. By studying the frequency dependence of the current in graphene layers grown on the SiC substrate, we observe that the current exhibits a resonance at frequencies matching the longitudinal optical phonon in SiC.

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