Quantum wave bandstop filters

Y. Wang; S. Y. Chou

doi:10.1063/1.112796

Quantum wave bandstop filters

Y. Wang, S. Y. Chou

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

6 Scopus citations

Abstract

We propose and demonstrate, based on the concept of a microwave bandstop filter, two quantum wave bandstop filter structures. Both structures employ nanoscale gates in a heterojunction transistor to induce a quantum cavity connected by two one-dimensional wires. As the electron wavelength is changed by the gate voltage, we observed that, at certain gate voltages, the transmission of electron waves through the cavity is partially blocked and the drain current drops as large as 50%. This phenomenon is explained in terms of the destructive quantum interference between different electron wave modes in the cavity.

Original language	English (US)
Pages (from-to)	2072-2074
Number of pages	3
Journal	Applied Physics Letters
Volume	65
Issue number	16
DOIs	https://doi.org/10.1063/1.112796
State	Published - 1994
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.112796

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title = "Quantum wave bandstop filters",

abstract = "We propose and demonstrate, based on the concept of a microwave bandstop filter, two quantum wave bandstop filter structures. Both structures employ nanoscale gates in a heterojunction transistor to induce a quantum cavity connected by two one-dimensional wires. As the electron wavelength is changed by the gate voltage, we observed that, at certain gate voltages, the transmission of electron waves through the cavity is partially blocked and the drain current drops as large as 50%. This phenomenon is explained in terms of the destructive quantum interference between different electron wave modes in the cavity.",

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AU - Wang, Y.

AU - Chou, S. Y.

PY - 1994

Y1 - 1994

N2 - We propose and demonstrate, based on the concept of a microwave bandstop filter, two quantum wave bandstop filter structures. Both structures employ nanoscale gates in a heterojunction transistor to induce a quantum cavity connected by two one-dimensional wires. As the electron wavelength is changed by the gate voltage, we observed that, at certain gate voltages, the transmission of electron waves through the cavity is partially blocked and the drain current drops as large as 50%. This phenomenon is explained in terms of the destructive quantum interference between different electron wave modes in the cavity.

AB - We propose and demonstrate, based on the concept of a microwave bandstop filter, two quantum wave bandstop filter structures. Both structures employ nanoscale gates in a heterojunction transistor to induce a quantum cavity connected by two one-dimensional wires. As the electron wavelength is changed by the gate voltage, we observed that, at certain gate voltages, the transmission of electron waves through the cavity is partially blocked and the drain current drops as large as 50%. This phenomenon is explained in terms of the destructive quantum interference between different electron wave modes in the cavity.

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JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 16

ER -

Quantum wave bandstop filters

Abstract

All Science Journal Classification (ASJC) codes

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