Rabi oscillation and electron-spin-echo envelope modulation of the photoexcited triplet spin system in silicon

Waseem Akhtar; Takeharu Sekiguchi; Tatsumasa Itahashi; Vasileia Filidou; John J.L. Morton; Leonid Vlasenko; Kohei M. Itoh

doi:10.1103/PhysRevB.86.115206

Rabi oscillation and electron-spin-echo envelope modulation of the photoexcited triplet spin system in silicon

Waseem Akhtar, Takeharu Sekiguchi, Tatsumasa Itahashi, Vasileia Filidou, John J.L. Morton, Leonid Vlasenko, Kohei M. Itoh

Department of Applied Physics and Physico-Informatics

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

8 Citations (Scopus)

Abstract

We report on a pulsed electron paramagnetic resonance (EPR) study of the photoexcited triplet state (S=1) of oxygen-vacancy centers in silicon. Rabi oscillations between the triplet sublevels are observed using coherent manipulation with a resonant microwave pulse. The Hahn echo and stimulated echo decay profiles are superimposed with strong modulations known as electron-spin-echo envelope modulation (ESEEM). The ESEEM spectra reveal a weak but anisotropic hyperfine coupling between the triplet electron spin and a 29Si nuclear spin (I=1/2) residing at a nearby lattice site, that cannot be resolved in conventional field-swept EPR spectra.

Original language	English
Article number	115206
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	86
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevB.86.115206
Publication status	Published - 2012 Sept 11

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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title = "Rabi oscillation and electron-spin-echo envelope modulation of the photoexcited triplet spin system in silicon",

abstract = "We report on a pulsed electron paramagnetic resonance (EPR) study of the photoexcited triplet state (S=1) of oxygen-vacancy centers in silicon. Rabi oscillations between the triplet sublevels are observed using coherent manipulation with a resonant microwave pulse. The Hahn echo and stimulated echo decay profiles are superimposed with strong modulations known as electron-spin-echo envelope modulation (ESEEM). The ESEEM spectra reveal a weak but anisotropic hyperfine coupling between the triplet electron spin and a 29Si nuclear spin (I=1/2) residing at a nearby lattice site, that cannot be resolved in conventional field-swept EPR spectra.",

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AU - Akhtar, Waseem

AU - Sekiguchi, Takeharu

AU - Itahashi, Tatsumasa

AU - Filidou, Vasileia

AU - Morton, John J.L.

AU - Vlasenko, Leonid

AU - Itoh, Kohei M.

PY - 2012/9/11

Y1 - 2012/9/11

N2 - We report on a pulsed electron paramagnetic resonance (EPR) study of the photoexcited triplet state (S=1) of oxygen-vacancy centers in silicon. Rabi oscillations between the triplet sublevels are observed using coherent manipulation with a resonant microwave pulse. The Hahn echo and stimulated echo decay profiles are superimposed with strong modulations known as electron-spin-echo envelope modulation (ESEEM). The ESEEM spectra reveal a weak but anisotropic hyperfine coupling between the triplet electron spin and a 29Si nuclear spin (I=1/2) residing at a nearby lattice site, that cannot be resolved in conventional field-swept EPR spectra.

AB - We report on a pulsed electron paramagnetic resonance (EPR) study of the photoexcited triplet state (S=1) of oxygen-vacancy centers in silicon. Rabi oscillations between the triplet sublevels are observed using coherent manipulation with a resonant microwave pulse. The Hahn echo and stimulated echo decay profiles are superimposed with strong modulations known as electron-spin-echo envelope modulation (ESEEM). The ESEEM spectra reveal a weak but anisotropic hyperfine coupling between the triplet electron spin and a 29Si nuclear spin (I=1/2) residing at a nearby lattice site, that cannot be resolved in conventional field-swept EPR spectra.

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Rabi oscillation and electron-spin-echo envelope modulation of the photoexcited triplet spin system in silicon

Abstract

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