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Suppression of bulk conductivity in InAs/GaSb broken gap composite quantum wells
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10.1063/1.4821037
/content/aip/journal/apl/103/11/10.1063/1.4821037
http://aip.metastore.ingenta.com/content/aip/journal/apl/103/11/10.1063/1.4821037
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Schematic representation of the conduction (blue) and valence (red) band alignments of the CQW region. The lowest (highest) electron (hole) energy levels ( ) are indicated by dashed lines. (b) Dispersion relation of and with the hybridization gap opening at the crossing points of the respective dispersion curves. (c) Magnetotransport data of an InAs/GaSb/AlSb CQW in the electron regime (at a top gate voltage of 4 V, i.e. an electron density of ). Red: longitudinal resistance, black: transverse resistance.

Image of FIG. 2.
FIG. 2.

Near-band-edge PL spectra of GaAs structures grown using both gallium sources. Blue: low mobility gallium, red: high mobility gallium. The peaks are labeled according to references.

Image of FIG. 3.
FIG. 3.

Longitudinal resistance of HM Ga (red) and LM Ga (blue) InAs/GaSb/AlSb CQW samples in function of top gate voltage at zero perpendicular magnetic field. The dashed lines indicate the position of the CNP at which was determined. Inset: for different B-fields from 0 to 7 T.

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/content/aip/journal/apl/103/11/10.1063/1.4821037
2013-09-10
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Suppression of bulk conductivity in InAs/GaSb broken gap composite quantum wells
http://aip.metastore.ingenta.com/content/aip/journal/apl/103/11/10.1063/1.4821037
10.1063/1.4821037
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