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Strong magnetophonon oscillations in extra-large graphene

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

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Strong magnetophonon oscillations in extra-large graphene. / Kumaravadivel, P.; Greenaway, M.T.; Perello, D. et al.
In: Nature Communications, Vol. 10, No. 1, 3334, 26.07.2019.

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

Harvard

Kumaravadivel, P, Greenaway, MT, Perello, D, Berdyugin, A, Birkbeck, J, Wengraf, J, Liu, S, Edgar, JH, Geim, AK, Eaves, L & Krishna Kumar, R 2019, 'Strong magnetophonon oscillations in extra-large graphene', Nature Communications, vol. 10, no. 1, 3334. https://doi.org/10.1038/s41467-019-11379-3

APA

Kumaravadivel, P., Greenaway, M. T., Perello, D., Berdyugin, A., Birkbeck, J., Wengraf, J., Liu, S., Edgar, J. H., Geim, A. K., Eaves, L., & Krishna Kumar, R. (2019). Strong magnetophonon oscillations in extra-large graphene. Nature Communications, 10(1), Article 3334. https://doi.org/10.1038/s41467-019-11379-3

Vancouver

Kumaravadivel P, Greenaway MT, Perello D, Berdyugin A, Birkbeck J, Wengraf J et al. Strong magnetophonon oscillations in extra-large graphene. Nature Communications. 2019 Jul 26;10(1):3334. doi: 10.1038/s41467-019-11379-3

Author

Kumaravadivel, P. ; Greenaway, M.T. ; Perello, D. et al. / Strong magnetophonon oscillations in extra-large graphene. In: Nature Communications. 2019 ; Vol. 10, No. 1.

Bibtex

@article{2734430a730040f2876cef5263f1b546,
title = "Strong magnetophonon oscillations in extra-large graphene",
abstract = "Van der Waals materials and their heterostructures offer a versatile platform for studying a variety of quantum transport phenomena due to their unique crystalline properties and the exceptional ability in tuning their electronic spectrum. However, most experiments are limited to devices that have lateral dimensions of only a few micrometres. Here, we perform magnetotransport measurements on graphene/hexagonal boron-nitride Hall bars and show that wider devices reveal additional quantum effects. In devices wider than ten micrometres we observe distinct magnetoresistance oscillations that are caused by resonant scattering of Landau-quantised Dirac electrons by acoustic phonons in graphene. The study allows us to accurately determine graphene{\textquoteright}s low energy phonon dispersion curves and shows that transverse acoustic modes cause most of phonon scattering. Our work highlights the crucial importance of device width when probing quantum effects and also demonstrates a precise, spectroscopic method for studying electron-phonon interactions in van der Waals heterostructures.",
author = "P. Kumaravadivel and M.T. Greenaway and D. Perello and A. Berdyugin and J. Birkbeck and J. Wengraf and S. Liu and J.H. Edgar and A.K. Geim and L. Eaves and {Krishna Kumar}, R.",
year = "2019",
month = jul,
day = "26",
doi = "10.1038/s41467-019-11379-3",
language = "English",
volume = "10",
journal = "Nature Communications",
issn = "2041-1723",
publisher = "Nature Publishing Group",
number = "1",

}

RIS

TY - JOUR

T1 - Strong magnetophonon oscillations in extra-large graphene

AU - Kumaravadivel, P.

AU - Greenaway, M.T.

AU - Perello, D.

AU - Berdyugin, A.

AU - Birkbeck, J.

AU - Wengraf, J.

AU - Liu, S.

AU - Edgar, J.H.

AU - Geim, A.K.

AU - Eaves, L.

AU - Krishna Kumar, R.

PY - 2019/7/26

Y1 - 2019/7/26

N2 - Van der Waals materials and their heterostructures offer a versatile platform for studying a variety of quantum transport phenomena due to their unique crystalline properties and the exceptional ability in tuning their electronic spectrum. However, most experiments are limited to devices that have lateral dimensions of only a few micrometres. Here, we perform magnetotransport measurements on graphene/hexagonal boron-nitride Hall bars and show that wider devices reveal additional quantum effects. In devices wider than ten micrometres we observe distinct magnetoresistance oscillations that are caused by resonant scattering of Landau-quantised Dirac electrons by acoustic phonons in graphene. The study allows us to accurately determine graphene’s low energy phonon dispersion curves and shows that transverse acoustic modes cause most of phonon scattering. Our work highlights the crucial importance of device width when probing quantum effects and also demonstrates a precise, spectroscopic method for studying electron-phonon interactions in van der Waals heterostructures.

AB - Van der Waals materials and their heterostructures offer a versatile platform for studying a variety of quantum transport phenomena due to their unique crystalline properties and the exceptional ability in tuning their electronic spectrum. However, most experiments are limited to devices that have lateral dimensions of only a few micrometres. Here, we perform magnetotransport measurements on graphene/hexagonal boron-nitride Hall bars and show that wider devices reveal additional quantum effects. In devices wider than ten micrometres we observe distinct magnetoresistance oscillations that are caused by resonant scattering of Landau-quantised Dirac electrons by acoustic phonons in graphene. The study allows us to accurately determine graphene’s low energy phonon dispersion curves and shows that transverse acoustic modes cause most of phonon scattering. Our work highlights the crucial importance of device width when probing quantum effects and also demonstrates a precise, spectroscopic method for studying electron-phonon interactions in van der Waals heterostructures.

U2 - 10.1038/s41467-019-11379-3

DO - 10.1038/s41467-019-11379-3

M3 - Journal article

VL - 10

JO - Nature Communications

JF - Nature Communications

SN - 2041-1723

IS - 1

M1 - 3334

ER -