Terahertz response of quantum point contacts

J. W. Song; N. A. Kabir; Y. Kawano; K. Ishibashi; G. R. Aizin; L. Mourokh; J. L. Reno; A. G. Markelz; J. P. Bird

doi:10.1063/1.2938416

Terahertz response of quantum point contacts

J. W. Song
, N. A. Kabir
, Y. Kawano
, K. Ishibashi
, G. R. Aizin
, L. Mourokh
, J. L. Reno
, A. G. Markelz
, J. P. Bird

SUNY Buffalo
RIKEN
City University of New York
Sandia National Laboratories, New Mexico

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

29 Scopus citations

Abstract

We measure a clear terahertz response in the lowerature conductance of a quantum point contact at 1.4 and 2.5 THz. We show that this photoresponse does not arise from a heating effect, but that it is instead excellently described by a classical model of terahertz-induced gate-voltage rectification. This effect is distinct from the rectification mechanisms that have been studied previously, being determined by the phase-dependent interference of the source drain and gate voltage modulations induced by the terahertz field.

Original language	English
Article number	223115
Journal	Applied Physics Letters
Volume	92
Issue number	22
DOIs	https://doi.org/10.1063/1.2938416
State	Published - 2008

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10.1063/1.2938416

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abstract = "We measure a clear terahertz response in the lowerature conductance of a quantum point contact at 1.4 and 2.5 THz. We show that this photoresponse does not arise from a heating effect, but that it is instead excellently described by a classical model of terahertz-induced gate-voltage rectification. This effect is distinct from the rectification mechanisms that have been studied previously, being determined by the phase-dependent interference of the source drain and gate voltage modulations induced by the terahertz field.",

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AU - Song, J. W.

AU - Kabir, N. A.

AU - Kawano, Y.

AU - Ishibashi, K.

AU - Aizin, G. R.

AU - Mourokh, L.

AU - Reno, J. L.

AU - Markelz, A. G.

AU - Bird, J. P.

PY - 2008

Y1 - 2008

N2 - We measure a clear terahertz response in the lowerature conductance of a quantum point contact at 1.4 and 2.5 THz. We show that this photoresponse does not arise from a heating effect, but that it is instead excellently described by a classical model of terahertz-induced gate-voltage rectification. This effect is distinct from the rectification mechanisms that have been studied previously, being determined by the phase-dependent interference of the source drain and gate voltage modulations induced by the terahertz field.

AB - We measure a clear terahertz response in the lowerature conductance of a quantum point contact at 1.4 and 2.5 THz. We show that this photoresponse does not arise from a heating effect, but that it is instead excellently described by a classical model of terahertz-induced gate-voltage rectification. This effect is distinct from the rectification mechanisms that have been studied previously, being determined by the phase-dependent interference of the source drain and gate voltage modulations induced by the terahertz field.

UR - https://www.scopus.com/pages/publications/44849091435

U2 - 10.1063/1.2938416

DO - 10.1063/1.2938416

M3 - Article

AN - SCOPUS:44849091435

SN - 0003-6951

VL - 92

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 22

M1 - 223115

ER -

Terahertz response of quantum point contacts

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