Magnetic-field-induced suppression of tunnelling into a two-dimensional electron system

T. Reker; Y. C. Chung; H. Im; P. C. Klipstein; R. J. Nicholas; Hadas Shtrikman

doi:10.1088/0953-8984/14/22/309

Magnetic-field-induced suppression of tunnelling into a two-dimensional electron system

T. Reker
, Y. C. Chung
, H. Im
, P. C. Klipstein
, R. J. Nicholas
, Hadas Shtrikman

Division of System Semiconductor

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Tunnelling between a three-dimensional emitter contact and a two-dimensional electron system (2DES) is studied in magnetic fields aligned perpendicular to the barriers of a double-barrier heterostructure. The differential conductance around the Fermi energy exhibits a magnetic-field-dependent pseudogap. This pseudogap is shown to be thermally activated and to depend on the two-dimensional electron density. We attribute this pseudogap to an extra energy that an electron tunnelling from the emitter into the 2DES has to overcome as a result of the correlated state of the 2DES.

Original language	English
Article number	309
Pages (from-to)	5561-5574
Number of pages	14
Journal	Journal of Physics Condensed Matter
Volume	14
Issue number	22
DOIs	https://doi.org/10.1088/0953-8984/14/22/309
State	Published - 10 Jun 2002

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abstract = "Tunnelling between a three-dimensional emitter contact and a two-dimensional electron system (2DES) is studied in magnetic fields aligned perpendicular to the barriers of a double-barrier heterostructure. The differential conductance around the Fermi energy exhibits a magnetic-field-dependent pseudogap. This pseudogap is shown to be thermally activated and to depend on the two-dimensional electron density. We attribute this pseudogap to an extra energy that an electron tunnelling from the emitter into the 2DES has to overcome as a result of the correlated state of the 2DES.",

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T1 - Magnetic-field-induced suppression of tunnelling into a two-dimensional electron system

AU - Reker, T.

AU - Chung, Y. C.

AU - Im, H.

AU - Klipstein, P. C.

AU - Nicholas, R. J.

AU - Shtrikman, Hadas

PY - 2002/6/10

Y1 - 2002/6/10

N2 - Tunnelling between a three-dimensional emitter contact and a two-dimensional electron system (2DES) is studied in magnetic fields aligned perpendicular to the barriers of a double-barrier heterostructure. The differential conductance around the Fermi energy exhibits a magnetic-field-dependent pseudogap. This pseudogap is shown to be thermally activated and to depend on the two-dimensional electron density. We attribute this pseudogap to an extra energy that an electron tunnelling from the emitter into the 2DES has to overcome as a result of the correlated state of the 2DES.

AB - Tunnelling between a three-dimensional emitter contact and a two-dimensional electron system (2DES) is studied in magnetic fields aligned perpendicular to the barriers of a double-barrier heterostructure. The differential conductance around the Fermi energy exhibits a magnetic-field-dependent pseudogap. This pseudogap is shown to be thermally activated and to depend on the two-dimensional electron density. We attribute this pseudogap to an extra energy that an electron tunnelling from the emitter into the 2DES has to overcome as a result of the correlated state of the 2DES.

UR - https://www.scopus.com/pages/publications/0037053902

U2 - 10.1088/0953-8984/14/22/309

DO - 10.1088/0953-8984/14/22/309

M3 - Article

AN - SCOPUS:0037053902

SN - 0953-8984

VL - 14

SP - 5561

EP - 5574

JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

IS - 22

M1 - 309

ER -

Magnetic-field-induced suppression of tunnelling into a two-dimensional electron system

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