Charge transport and inhomogeneity near the minimum conductivity point in graphene

Cited 138 time in webofscience Cited 0 time in scopus
  • Hit : 302
  • Download : 0
The magnetic-field-dependent longitudinal and Hall components of the resistivity rho(xx)(H) and rho(xy)(H) are measured in graphene on silicon dioxide substrates at temperatures 1.6 K <= T <= 300 K. At charge densities near the minimum conductivity point rho(xx)(H) is strongly enhanced and rho(xy)(H) is suppressed, indicating nearly equal electron and hole contributions to the current. The data are inconsistent with the standard two-fluid model but consistent with the prediction for inhomogeneously distributed electron and hole regions of equal mobility. At low T and high H, rho(xx)(H) saturates to a value similar to h/e(2), with Hall conductivity << e(2)/h, which may indicate a regime of localized v=2 and v=-2 quantum Hall puddles.
Publisher
AMER PHYSICAL SOC
Issue Date
2008-02
Language
English
Article Type
Article
Keywords

PHASE

Citation

PHYSICAL REVIEW B, v.77, no.8

ISSN
1098-0121
DOI
10.1103/PhysRevB.77.081402
URI
http://hdl.handle.net/10203/201428
Appears in Collection
PH-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 138 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0