Physics of a disordered Dirac point in epitaxial graphene from temperature-dependent magnetotransport measurements. / Huang, J; Alexander-Webber, J A; Baker, A M; Janssen, T J B M; Tzalenchuk, Alexander; Antonov, Vladimir; Yager, T; Lara-Avila, S; Kubatkin, S; Yakimova, R; Nicholas, R J .

In: Physical Review B, Vol. 92, No. 7, 075407, 15.08.2015, p. 1-6.

Research output: Contribution to journalArticlepeer-review

Published

Standard

Physics of a disordered Dirac point in epitaxial graphene from temperature-dependent magnetotransport measurements. / Huang, J; Alexander-Webber, J A; Baker, A M; Janssen, T J B M; Tzalenchuk, Alexander; Antonov, Vladimir; Yager, T; Lara-Avila, S; Kubatkin, S; Yakimova, R; Nicholas, R J .

In: Physical Review B, Vol. 92, No. 7, 075407, 15.08.2015, p. 1-6.

Research output: Contribution to journalArticlepeer-review

Harvard

Huang, J, Alexander-Webber, JA, Baker, AM, Janssen, TJBM, Tzalenchuk, A, Antonov, V, Yager, T, Lara-Avila, S, Kubatkin, S, Yakimova, R & Nicholas, RJ 2015, 'Physics of a disordered Dirac point in epitaxial graphene from temperature-dependent magnetotransport measurements', Physical Review B, vol. 92, no. 7, 075407, pp. 1-6. https://doi.org/10.1103/PhysRevB.92.075407

APA

Huang, J., Alexander-Webber, J. A., Baker, A. M., Janssen, T. J. B. M., Tzalenchuk, A., Antonov, V., Yager, T., Lara-Avila, S., Kubatkin, S., Yakimova, R., & Nicholas, R. J. (2015). Physics of a disordered Dirac point in epitaxial graphene from temperature-dependent magnetotransport measurements. Physical Review B, 92(7), 1-6. [075407]. https://doi.org/10.1103/PhysRevB.92.075407

Vancouver

Author

Huang, J ; Alexander-Webber, J A ; Baker, A M ; Janssen, T J B M ; Tzalenchuk, Alexander ; Antonov, Vladimir ; Yager, T ; Lara-Avila, S ; Kubatkin, S ; Yakimova, R ; Nicholas, R J . / Physics of a disordered Dirac point in epitaxial graphene from temperature-dependent magnetotransport measurements. In: Physical Review B. 2015 ; Vol. 92, No. 7. pp. 1-6.

BibTeX

@article{cc88b058d9b94761991b845bd0d7db31,
title = "Physics of a disordered Dirac point in epitaxial graphene from temperature-dependent magnetotransport measurements",
abstract = "We report a study of disorder effects on epitaxial graphene in the vicinity of the Dirac point by magneto-transport. Hall effect measurements show that the carrier density increases quadratically with temperature, in good agreement with theoretical predictions which take into account intrinsic thermal excitation combined with electron-hole puddles induced by charged impurities. We deduce disorder strengths in the range 10.2 ~31.2 meV, depending on the sample treatment. We investigate the scattering mechanisms and estimate the impurity density to be 3.0 ~9.1 × 10^10 cm^−2 for our samples. An asymmetry in the electron/hole scattering is observed and is consistent with theoretical calculations for graphene on SiC substrates. We also show that the minimum conductivity increases with increasing disorder potential, in good agreement with quantum-mechanical numerical calculations.",
keywords = "Electronic transport in graphene, Electronic structure of disordered solids, Theory of electronic transport; scattering mechanisms",
author = "J Huang and Alexander-Webber, {J A} and Baker, {A M} and Janssen, {T J B M} and Alexander Tzalenchuk and Vladimir Antonov and T Yager and S Lara-Avila and S Kubatkin and R Yakimova and Nicholas, {R J}",
year = "2015",
month = aug,
day = "15",
doi = "10.1103/PhysRevB.92.075407",
language = "English",
volume = "92",
pages = "1--6",
journal = "Physical Review B",
issn = "1098-0121",
publisher = "American Physical Society",
number = "7",

}

RIS

TY - JOUR

T1 - Physics of a disordered Dirac point in epitaxial graphene from temperature-dependent magnetotransport measurements

AU - Huang, J

AU - Alexander-Webber, J A

AU - Baker, A M

AU - Janssen, T J B M

AU - Tzalenchuk, Alexander

AU - Antonov, Vladimir

AU - Yager, T

AU - Lara-Avila, S

AU - Kubatkin, S

AU - Yakimova, R

AU - Nicholas, R J

PY - 2015/8/15

Y1 - 2015/8/15

N2 - We report a study of disorder effects on epitaxial graphene in the vicinity of the Dirac point by magneto-transport. Hall effect measurements show that the carrier density increases quadratically with temperature, in good agreement with theoretical predictions which take into account intrinsic thermal excitation combined with electron-hole puddles induced by charged impurities. We deduce disorder strengths in the range 10.2 ~31.2 meV, depending on the sample treatment. We investigate the scattering mechanisms and estimate the impurity density to be 3.0 ~9.1 × 10^10 cm^−2 for our samples. An asymmetry in the electron/hole scattering is observed and is consistent with theoretical calculations for graphene on SiC substrates. We also show that the minimum conductivity increases with increasing disorder potential, in good agreement with quantum-mechanical numerical calculations.

AB - We report a study of disorder effects on epitaxial graphene in the vicinity of the Dirac point by magneto-transport. Hall effect measurements show that the carrier density increases quadratically with temperature, in good agreement with theoretical predictions which take into account intrinsic thermal excitation combined with electron-hole puddles induced by charged impurities. We deduce disorder strengths in the range 10.2 ~31.2 meV, depending on the sample treatment. We investigate the scattering mechanisms and estimate the impurity density to be 3.0 ~9.1 × 10^10 cm^−2 for our samples. An asymmetry in the electron/hole scattering is observed and is consistent with theoretical calculations for graphene on SiC substrates. We also show that the minimum conductivity increases with increasing disorder potential, in good agreement with quantum-mechanical numerical calculations.

KW - Electronic transport in graphene

KW - Electronic structure of disordered solids

KW - Theory of electronic transport; scattering mechanisms

U2 - 10.1103/PhysRevB.92.075407

DO - 10.1103/PhysRevB.92.075407

M3 - Article

VL - 92

SP - 1

EP - 6

JO - Physical Review B

JF - Physical Review B

SN - 1098-0121

IS - 7

M1 - 075407

ER -