TY - JOUR
T1 - Quadrupolar effects on nuclear spins of neutral arsenic donors in silicon
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.
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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U2 - 10.1103/PhysRevB.93.161303
DO - 10.1103/PhysRevB.93.161303
M3 - Article
AN - SCOPUS:84964679058
VL - 93
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 2469-9950
IS - 16
M1 - 161303
ER -