High-temperature quantum oscillations caused by recurring Bloch states in graphene superlattices-Reference-Cited by-同舟云学术

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

Published:2017-07-14 Issue:6347 Volume:357 Page:181-184
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Krishna Kumar R.¹²³^ORCID,Chen X.²^ORCID,Auton G. H.²,Mishchenko A.¹^ORCID,Bandurin D. A.¹,Morozov S. V.⁴⁵,Cao Y.²,Khestanova E.¹^ORCID,Ben Shalom M.¹^ORCID,Kretinin A. V.²⁶^ORCID,Novoselov K. S.²^ORCID,Eaves L.²⁷^ORCID,Grigorieva I. V.¹^ORCID,Ponomarenko L. A.³,Fal’ko V. I.¹²^ORCID,Geim A. K.¹²^ORCID

Affiliation:

1. School of Physics and Astronomy, University of Manchester, Manchester M13 9PL, UK.

2. National Graphene Institute, University of Manchester, Manchester M13 9PL, UK.

3. Department of Physics, University of Lancaster, Lancaster LA1 4YW, UK.

4. Institute of Microelectronics Technology and High Purity Materials, Russian Academy of Sciences, Chernogolovka 142432, Russia.

5. National University of Science and Technology (MISiS), Moscow 119049, Russia.

6. School of Materials, University of Manchester, Manchester M13 9PL, UK.

7. School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, UK.

Abstract

Heat-loving quantum oscillations The shape of the Fermi surface in a conductor can be gleaned through quantum oscillations—periodic changes in transport properties as an external magnetic field is varied. Like most quantum properties, the phenomenon can usually be observed only at very low temperatures. Krishna Kumar et al. report quantum oscillations in graphene that do not go away even at the temperature of boiling water. Although “ordinary,” low-temperature quantum oscillations die away, another oscillatory behavior sets in that is extremely robust to heating. These resilient oscillations appear only in samples in which graphene is nearly aligned with its hexagonal boron nitride substrate, indicating that they are caused by the potential of the moiré superlattice that forms in such circumstances. Science , this issue p. 181

Funder

Lloyd’s Register Foundation

Russian Science Support Foundation

European Commission

European Research Council

National University of Science and Technology MISiS

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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