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Thermoelectric effect in high mobility single layer epitaxial graphene
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10.1063/1.3641424
/content/aip/journal/apl/99/13/10.1063/1.3641424
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/13/10.1063/1.3641424
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) High mobility epitaxial graphene. (a) The longitudinal resistivity and Hall resistance manifest the quantum Hall effect. Inset, an enhanced optical image of a graphene device for thermoelectric measurements. The scale bar is 2 μm. (b) The thermopower in low magnetic field displays strong and reproducible fluctuations.

Image of FIG. 2.
FIG. 2.

(Color online) The thermopower Sxx as a function of temperature. Open black square, experiment, solid blue line is a least square fit to AT + BT 2.

Image of FIG. 3.
FIG. 3.

(Color online) The magnetic field dependence of the thermopower Sxx (panel a) is plotted for T = 10, 20, 30, 50, 80, 100 K, from bottom to top. Data show oscillations that are periodic in inverse magnetic field. The amplitudes of the oscillations AS are multiplied by the Landau index n and plotted as a function of temperature in panel (b) for n = 2, 3, 4, 5, 6 (circle, square, star, triangle, and diamond). The dashed line marks .

Image of FIG. 4.
FIG. 4.

(Color) The Nernst signal Syx , showing quantum oscillations, are plotted for T = 10, 20, 30, 50, 80, 100 K, denoted by black, red, blue, dark green, magenta, and dark yellow, respectively.

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/content/aip/journal/apl/99/13/10.1063/1.3641424
2011-09-26
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Thermoelectric effect in high mobility single layer epitaxial graphene
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/13/10.1063/1.3641424
10.1063/1.3641424
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