| dc.contributor |
Massachusetts Institute of Technology. Department of Physics |
|
| dc.contributor |
Levitov, Leonid |
|
| dc.contributor |
Levitov, Leonid |
|
| dc.contributor |
Abanin, Dmitry A. |
|
| dc.creator |
Levitov, Leonid |
|
| dc.creator |
Abanin, Dmitry A. |
|
| dc.creator |
Skachko, I. |
|
| dc.creator |
Du, X. |
|
| dc.creator |
Andrei, E. Y. |
|
| dc.date |
2010-08-12T18:55:35Z |
|
| dc.date |
2010-08-12T18:55:35Z |
|
| dc.date |
2010-03 |
|
| dc.date |
2010-01 |
|
| dc.date.accessioned |
2023-03-01T18:09:17Z |
|
| dc.date.available |
2023-03-01T18:09:17Z |
|
| dc.identifier |
1098-0121 |
|
| dc.identifier |
http://hdl.handle.net/1721.1/57498 |
|
| dc.identifier |
Abanin, D. A. et al. “Fractional quantum Hall effect in suspended graphene: Transport coefficients and electron interaction strength.” Physical Review B 81.11 (2010): 115410. © 2010 The American Physical Society. |
|
| dc.identifier |
https://orcid.org/0000-0002-4268-731X |
|
| dc.identifier.uri |
http://localhost:8080/xmlui/handle/CUHPOERS/278954 |
|
| dc.description |
Recently, fractional-quantized Hall effect was observed in suspended graphene (SG), a free-standing monolayer of carbon, where it was found to persist up to T=10 K. The best results in those experiments were obtained on micron-size flakes, on which only two-terminal transport measurements could be performed. Here we address the problem of extracting transport coefficients of a fractional quantum Hall state from the two-terminal conductance. We develop a general method, based on the conformal invariance of two-dimensional magnetotransport, and employ it to analyze the measurements on SG. From the temperature dependence of longitudinal conductivity, extracted from the measured two-terminal conductance, we estimate the energy gap of quasiparticle excitations in the fractional-quantized ν=1/3 state. The gap is found to be significantly larger than in GaAs-based structures, signaling much stronger electron interactions in suspended graphene. Our approach provides a tool for the studies of quantum transport in suspended graphene and other nanoscale systems. |
|
| dc.format |
application/pdf |
|
| dc.language |
en_US |
|
| dc.publisher |
American Physical Society |
|
| dc.relation |
http://dx.doi.org/10.1103/PhysRevB.81.115410 |
|
| dc.relation |
Physical Review B |
|
| dc.rights |
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. |
|
| dc.source |
APS |
|
| dc.title |
Fractional quantum Hall effect in suspended graphene: Transport coefficients and electron interaction strength |
|
| dc.type |
Article |
|
| dc.type |
http://purl.org/eprint/type/JournalArticle |
|