Home > Research > Publications & Outputs > High-temperature quantum oscillations caused by...

Research

Associated organisational unit

Electronic data

  • Superlattice1705.11170

    Rights statement: Copyright © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works http://www.sciencemag.org/about/science-licenses-journal-article-reuse This is an article distributed under the terms of the Science Journals Default License.

    Accepted author manuscript, 2.42 MB, PDF document

    Available under license: CC BY-NC: Creative Commons Attribution-NonCommercial 4.0 International License

Links

Text available via DOI:

View graph of relations

High-temperature quantum oscillations caused by recurring Bloch states in graphene superlattices

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

Published

Standard

High-temperature quantum oscillations caused by recurring Bloch states in graphene superlattices. / Krishna Kumar, Roshan; Chen, X; Auton, G. H. et al.
In: Science, Vol. 357, No. 6347, 14.07.2017, p. 181-184.

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

Harvard

Krishna Kumar, R, Chen, X, Auton, GH, Mishchenko, A, Bandurin, DA, Morozov, SV, Cao, Y, Khestanova, E, Ben Shalom, M, Kretinin, AV, Novoselov, KS, Eaves, L, Grigorieva, IV, Ponomarenko, LA, Falko, V & Geim, AK 2017, 'High-temperature quantum oscillations caused by recurring Bloch states in graphene superlattices', Science, vol. 357, no. 6347, pp. 181-184. https://doi.org/10.1126/science.aal3357

APA

Krishna Kumar, R., Chen, X., Auton, G. H., Mishchenko, A., Bandurin, D. A., Morozov, S. V., Cao, Y., Khestanova, E., Ben Shalom, M., Kretinin, A. V., Novoselov, K. S., Eaves, L., Grigorieva, I. V., Ponomarenko, L. A., Falko, V., & Geim, A. K. (2017). High-temperature quantum oscillations caused by recurring Bloch states in graphene superlattices. Science, 357(6347), 181-184. https://doi.org/10.1126/science.aal3357

Vancouver

Krishna Kumar R, Chen X, Auton GH, Mishchenko A, Bandurin DA, Morozov SV et al. High-temperature quantum oscillations caused by recurring Bloch states in graphene superlattices. Science. 2017 Jul 14;357(6347):181-184. doi: 10.1126/science.aal3357

Author

Krishna Kumar, Roshan ; Chen, X ; Auton, G. H. et al. / High-temperature quantum oscillations caused by recurring Bloch states in graphene superlattices. In: Science. 2017 ; Vol. 357, No. 6347. pp. 181-184.

Bibtex

@article{b82c0068811c4ff19fdddba5ef3ea40a,
title = "High-temperature quantum oscillations caused by recurring Bloch states in graphene superlattices",
abstract = "Cyclotron motion of charge carriers in metals and semiconductors leads to Landau quantization and magneto-oscillatory behavior in their properties. Cryogenic temperatures are usually required to observe these oscillations. We show that graphene superlattices support a different type of quantum oscillation that does not rely on Landau quantization. The oscillations are extremely robust and persist well above room temperature in magnetic fields of only a few tesla. We attribute this phenomenon to repetitive changes in the electronic structure of superlattices such that charge carriers experience effectively no magnetic field at simple fractions of the flux quantum per superlattice unit cell. Our work hints at unexplored physics in Hofstadter butterfly systems at high temperatures.",
author = "{Krishna Kumar}, Roshan and X Chen and Auton, {G. H.} and Artem Mishchenko and Bandurin, {D. A.} and Morozov, {Sergey V.} and Y Cao and E. Khestanova and {Ben Shalom}, Moshe and Kretinin, {A. V.} and Novoselov, {K. S.} and L. Eaves and Grigorieva, {I. V.} and Ponomarenko, {Leonid Alexandrovich} and Vladimir Falko and Geim, {A. K.}",
note = "Copyright {\textcopyright} 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works http://www.sciencemag.org/about/science-licenses-journal-article-reuse This is an article distributed under the terms of the Science Journals Default License.",
year = "2017",
month = jul,
day = "14",
doi = "10.1126/science.aal3357",
language = "English",
volume = "357",
pages = "181--184",
journal = "Science",
issn = "0036-8075",
publisher = "American Association for the Advancement of Science",
number = "6347",

}

RIS

TY - JOUR

T1 - High-temperature quantum oscillations caused by recurring Bloch states in graphene superlattices

AU - Krishna Kumar, Roshan

AU - Chen, X

AU - Auton, G. H.

AU - Mishchenko, Artem

AU - Bandurin, D. A.

AU - Morozov, Sergey V.

AU - Cao, Y

AU - Khestanova, E.

AU - Ben Shalom, Moshe

AU - Kretinin, A. V.

AU - Novoselov, K. S.

AU - Eaves, L.

AU - Grigorieva, I. V.

AU - Ponomarenko, Leonid Alexandrovich

AU - Falko, Vladimir

AU - Geim, A. K.

N1 - Copyright © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works http://www.sciencemag.org/about/science-licenses-journal-article-reuse This is an article distributed under the terms of the Science Journals Default License.

PY - 2017/7/14

Y1 - 2017/7/14

N2 - Cyclotron motion of charge carriers in metals and semiconductors leads to Landau quantization and magneto-oscillatory behavior in their properties. Cryogenic temperatures are usually required to observe these oscillations. We show that graphene superlattices support a different type of quantum oscillation that does not rely on Landau quantization. The oscillations are extremely robust and persist well above room temperature in magnetic fields of only a few tesla. We attribute this phenomenon to repetitive changes in the electronic structure of superlattices such that charge carriers experience effectively no magnetic field at simple fractions of the flux quantum per superlattice unit cell. Our work hints at unexplored physics in Hofstadter butterfly systems at high temperatures.

AB - Cyclotron motion of charge carriers in metals and semiconductors leads to Landau quantization and magneto-oscillatory behavior in their properties. Cryogenic temperatures are usually required to observe these oscillations. We show that graphene superlattices support a different type of quantum oscillation that does not rely on Landau quantization. The oscillations are extremely robust and persist well above room temperature in magnetic fields of only a few tesla. We attribute this phenomenon to repetitive changes in the electronic structure of superlattices such that charge carriers experience effectively no magnetic field at simple fractions of the flux quantum per superlattice unit cell. Our work hints at unexplored physics in Hofstadter butterfly systems at high temperatures.

U2 - 10.1126/science.aal3357

DO - 10.1126/science.aal3357

M3 - Journal article

VL - 357

SP - 181

EP - 184

JO - Science

JF - Science

SN - 0036-8075

IS - 6347

ER -