Quadrupolar effects on nuclear spins of neutral arsenic donors in silicon

David P. Franke; Moritz P.D. Pflüger; Pierre André Mortemousque; Kohei M. Itoh; Martin S. Brandt

doi:10.1103/PhysRevB.93.161303

Quadrupolar effects on nuclear spins of neutral arsenic donors in silicon

David P. Franke, Moritz P.D. Pflüger, Pierre André Mortemousque, Kohei M. Itoh, Martin S. Brandt

Department of Applied Physics and Physico-Informatics

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

7 Citations (Scopus)

Abstract

We present electrically detected electron nuclear double resonance measurements of the nuclear spins of ionized and neutral arsenic donors in strained silicon. In addition to a reduction of the hyperfine coupling, we find significant quadrupole interactions of the nuclear spin of the neutral donors of the order of 10 kHz. By comparing these to the quadrupole shifts due to crystal fields measured for the ionized donors, we identify the effect of the additional electron on the electric field gradient at the nucleus. This extra component is expected to be caused by the coupling to electric field gradients created due to changes in the electron wave function under strain.

Original language	English
Article number	161303
Journal	Physical Review B
Volume	93
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevB.93.161303
Publication status	Published - 2016 Apr 25

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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title = "Quadrupolar effects on nuclear spins of neutral arsenic donors in silicon",

abstract = "We present electrically detected electron nuclear double resonance measurements of the nuclear spins of ionized and neutral arsenic donors in strained silicon. In addition to a reduction of the hyperfine coupling, we find significant quadrupole interactions of the nuclear spin of the neutral donors of the order of 10 kHz. By comparing these to the quadrupole shifts due to crystal fields measured for the ionized donors, we identify the effect of the additional electron on the electric field gradient at the nucleus. This extra component is expected to be caused by the coupling to electric field gradients created due to changes in the electron wave function under strain.",

author = "Franke, {David P.} and Pfl{\"u}ger, {Moritz P.D.} and Mortemousque, {Pierre Andr{\'e}} and Itoh, {Kohei M.} and Brandt, {Martin S.}",

note = "Funding Information: The authors would like to thank Hans-Werner Becker for the implantation and Manabu Otsuka for sample characterization. The work at TUM was supported financially by DFG via SFB 631 and SPP 1601, the work at Keio by KAKENHI (S) Grant No. 26220602, and JSPS Core-to-Core. Publisher Copyright: {\textcopyright} 2016 American Physical Society. Copyright: Copyright 2019 Elsevier B.V., All rights reserved.",

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AU - Franke, David P.

AU - Pflüger, Moritz P.D.

AU - Mortemousque, Pierre André

AU - Itoh, Kohei M.

AU - Brandt, Martin S.

N1 - Funding Information: The authors would like to thank Hans-Werner Becker for the implantation and Manabu Otsuka for sample characterization. The work at TUM was supported financially by DFG via SFB 631 and SPP 1601, the work at Keio by KAKENHI (S) Grant No. 26220602, and JSPS Core-to-Core. Publisher Copyright: © 2016 American Physical Society. Copyright: Copyright 2019 Elsevier B.V., All rights reserved.

PY - 2016/4/25

Y1 - 2016/4/25

N2 - We present electrically detected electron nuclear double resonance measurements of the nuclear spins of ionized and neutral arsenic donors in strained silicon. In addition to a reduction of the hyperfine coupling, we find significant quadrupole interactions of the nuclear spin of the neutral donors of the order of 10 kHz. By comparing these to the quadrupole shifts due to crystal fields measured for the ionized donors, we identify the effect of the additional electron on the electric field gradient at the nucleus. This extra component is expected to be caused by the coupling to electric field gradients created due to changes in the electron wave function under strain.

AB - We present electrically detected electron nuclear double resonance measurements of the nuclear spins of ionized and neutral arsenic donors in strained silicon. In addition to a reduction of the hyperfine coupling, we find significant quadrupole interactions of the nuclear spin of the neutral donors of the order of 10 kHz. By comparing these to the quadrupole shifts due to crystal fields measured for the ionized donors, we identify the effect of the additional electron on the electric field gradient at the nucleus. This extra component is expected to be caused by the coupling to electric field gradients created due to changes in the electron wave function under strain.

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