Electrically detected magnetic resonance in a W-band microwave cavity

V. Lang; C. C. Lo; R. E. George; S. A. Lyon; J. Bokor; T. Schenkel; A. Ardavan; J. J.L. Morton

doi:10.1063/1.3557395

Electrically detected magnetic resonance in a W-band microwave cavity

V. Lang, C. C. Lo, R. E. George, S. A. Lyon, J. Bokor, T. Schenkel, A. Ardavan, J. J.L. Morton

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9 Scopus citations

Abstract

We describe a low-temperature sample probe for the electrical detection of magnetic resonance in a resonant W-band (94 GHz) microwave cavity. The advantages of this approach are demonstrated by experiments on silicon field-effect transistors. A comparison with conventional low-frequency measurements at X-band (9.7 GHz) on the same devices reveals an up to 100-fold enhancement of the signal intensity. In addition, resonance lines that are unresolved at X-band are clearly separated in the W-band measurements. Electrically detected magnetic resonance at high magnetic fields and high microwave frequencies is therefore a very sensitive technique for studying electron spins with an enhanced spectral resolution and sensitivity.

Original language	English (US)
Article number	034704
Journal	Review of Scientific Instruments
Volume	82
Issue number	3
DOIs	https://doi.org/10.1063/1.3557395
State	Published - Mar 2011

All Science Journal Classification (ASJC) codes

Instrumentation

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10.1063/1.3557395

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@article{3fa5e6f72fd54a94aed7b35a25ec005b,

title = "Electrically detected magnetic resonance in a W-band microwave cavity",

abstract = "We describe a low-temperature sample probe for the electrical detection of magnetic resonance in a resonant W-band (94 GHz) microwave cavity. The advantages of this approach are demonstrated by experiments on silicon field-effect transistors. A comparison with conventional low-frequency measurements at X-band (9.7 GHz) on the same devices reveals an up to 100-fold enhancement of the signal intensity. In addition, resonance lines that are unresolved at X-band are clearly separated in the W-band measurements. Electrically detected magnetic resonance at high magnetic fields and high microwave frequencies is therefore a very sensitive technique for studying electron spins with an enhanced spectral resolution and sensitivity.",

author = "V. Lang and Lo, {C. C.} and George, {R. E.} and Lyon, {S. A.} and J. Bokor and T. Schenkel and A. Ardavan and Morton, {J. J.L.}",

note = "Funding Information: The authors thank Alexei Tyryshkin for fruitful discussions and acknowledge funding from EPSRC through CAESR EP/D048559/1, and US National Security Agency under contract number 100000080295. Work at LBNL was supported by the Department of Energy under contract No. DE-AC02-05CH11231. V.L. is supported by Konrad-Adenauer-Stiftung e.V. and EPSRC DTA. A.A. and J.J.L.M. are supported by The Royal Society, J.J.L.M. from St. John's College Oxford.",

year = "2011",

month = mar,

doi = "10.1063/1.3557395",

language = "English (US)",

volume = "82",

journal = "Review of Scientific Instruments",

issn = "0034-6748",

publisher = "American Institute of Physics Publising LLC",

number = "3",

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TY - JOUR

T1 - Electrically detected magnetic resonance in a W-band microwave cavity

AU - Lang, V.

AU - Lo, C. C.

AU - George, R. E.

AU - Lyon, S. A.

AU - Bokor, J.

AU - Schenkel, T.

AU - Ardavan, A.

AU - Morton, J. J.L.

N1 - Funding Information: The authors thank Alexei Tyryshkin for fruitful discussions and acknowledge funding from EPSRC through CAESR EP/D048559/1, and US National Security Agency under contract number 100000080295. Work at LBNL was supported by the Department of Energy under contract No. DE-AC02-05CH11231. V.L. is supported by Konrad-Adenauer-Stiftung e.V. and EPSRC DTA. A.A. and J.J.L.M. are supported by The Royal Society, J.J.L.M. from St. John's College Oxford.

PY - 2011/3

Y1 - 2011/3

N2 - We describe a low-temperature sample probe for the electrical detection of magnetic resonance in a resonant W-band (94 GHz) microwave cavity. The advantages of this approach are demonstrated by experiments on silicon field-effect transistors. A comparison with conventional low-frequency measurements at X-band (9.7 GHz) on the same devices reveals an up to 100-fold enhancement of the signal intensity. In addition, resonance lines that are unresolved at X-band are clearly separated in the W-band measurements. Electrically detected magnetic resonance at high magnetic fields and high microwave frequencies is therefore a very sensitive technique for studying electron spins with an enhanced spectral resolution and sensitivity.

AB - We describe a low-temperature sample probe for the electrical detection of magnetic resonance in a resonant W-band (94 GHz) microwave cavity. The advantages of this approach are demonstrated by experiments on silicon field-effect transistors. A comparison with conventional low-frequency measurements at X-band (9.7 GHz) on the same devices reveals an up to 100-fold enhancement of the signal intensity. In addition, resonance lines that are unresolved at X-band are clearly separated in the W-band measurements. Electrically detected magnetic resonance at high magnetic fields and high microwave frequencies is therefore a very sensitive technique for studying electron spins with an enhanced spectral resolution and sensitivity.

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DO - 10.1063/1.3557395

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VL - 82

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

IS - 3

M1 - 034704

ER -

Electrically detected magnetic resonance in a W-band microwave cavity

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