Electron spin dynamics of Ce3+ ions in YAG crystals studied by pulse-EPR and pump-probe Faraday rotation

D. V. Azamat; V. V. Belykh; D. R. Yakovlev; F. Fobbe; D. H. Feng; E. Evers; L. Jastrabik; A. Dejneka; M. Bayer

doi:10.1103/PhysRevB.96.075160

Electron spin dynamics of Ce3+ ions in YAG crystals studied by pulse-EPR and pump-probe Faraday rotation

D. V. Azamat
, V. V. Belykh
, D. R. Yakovlev
, F. Fobbe
, D. H. Feng
, E. Evers
, L. Jastrabik
, A. Dejneka
, M. Bayer

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

9 Scopus citations

Abstract

The spin relaxation dynamics of Ce3+ ions in heavily cerium-doped YAG crystals is studied using pulse-electron paramagnetic resonance and time-resolved pump-probe Faraday rotation. Both techniques address the 4f ground state, while pump-probe Faraday rotation also provides access to the excited 5d state. We measure a millisecond spin-lattice relaxation time T1, a microsecond spin coherence time T2, and a ∼10 ns inhomogeneous spin dephasing time T2∗ for the Ce3+ ground state at low temperatures. The spin-lattice relaxation of Ce3+ ions is due to modified Raman processes involving the optical phonon mode at ∼125cm-1. The relaxation at higher temperature goes through a first excited level of the F522 term at about ω≈228cm-1. Effects provided by the hyperfine interaction of the Ce3+ with the Al27 nuclei are observed.

Original language	English
Article number	075160
Journal	Physical Review B
Volume	96
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevB.96.075160
State	Published - 30 Aug 2017
Externally published	Yes

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10.1103/PhysRevB.96.075160

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@article{0b6b8e21d4bb4c92b4ff0b66e6847ea2,

title = "Electron spin dynamics of Ce3+ ions in YAG crystals studied by pulse-EPR and pump-probe Faraday rotation",

abstract = "The spin relaxation dynamics of Ce3+ ions in heavily cerium-doped YAG crystals is studied using pulse-electron paramagnetic resonance and time-resolved pump-probe Faraday rotation. Both techniques address the 4f ground state, while pump-probe Faraday rotation also provides access to the excited 5d state. We measure a millisecond spin-lattice relaxation time T1, a microsecond spin coherence time T2, and a ∼10 ns inhomogeneous spin dephasing time T2∗ for the Ce3+ ground state at low temperatures. The spin-lattice relaxation of Ce3+ ions is due to modified Raman processes involving the optical phonon mode at ∼125cm-1. The relaxation at higher temperature goes through a first excited level of the F522 term at about ω≈228cm-1. Effects provided by the hyperfine interaction of the Ce3+ with the Al27 nuclei are observed.",

author = "Azamat, \{D. V.\} and Belykh, \{V. V.\} and Yakovlev, \{D. R.\} and F. Fobbe and Feng, \{D. H.\} and E. Evers and L. Jastrabik and A. Dejneka and M. Bayer",

note = "Publisher Copyright: {\textcopyright} 2017 American Physical Society.",

year = "2017",

month = aug,

day = "30",

doi = "10.1103/PhysRevB.96.075160",

language = "英语",

volume = "96",

journal = "Physical Review B",

issn = "2469-9950",

publisher = "American Physical Society",

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TY - JOUR

T1 - Electron spin dynamics of Ce3+ ions in YAG crystals studied by pulse-EPR and pump-probe Faraday rotation

AU - Azamat, D. V.

AU - Belykh, V. V.

AU - Yakovlev, D. R.

AU - Fobbe, F.

AU - Feng, D. H.

AU - Evers, E.

AU - Jastrabik, L.

AU - Dejneka, A.

AU - Bayer, M.

PY - 2017/8/30

Y1 - 2017/8/30

N2 - The spin relaxation dynamics of Ce3+ ions in heavily cerium-doped YAG crystals is studied using pulse-electron paramagnetic resonance and time-resolved pump-probe Faraday rotation. Both techniques address the 4f ground state, while pump-probe Faraday rotation also provides access to the excited 5d state. We measure a millisecond spin-lattice relaxation time T1, a microsecond spin coherence time T2, and a ∼10 ns inhomogeneous spin dephasing time T2∗ for the Ce3+ ground state at low temperatures. The spin-lattice relaxation of Ce3+ ions is due to modified Raman processes involving the optical phonon mode at ∼125cm-1. The relaxation at higher temperature goes through a first excited level of the F522 term at about ω≈228cm-1. Effects provided by the hyperfine interaction of the Ce3+ with the Al27 nuclei are observed.

AB - The spin relaxation dynamics of Ce3+ ions in heavily cerium-doped YAG crystals is studied using pulse-electron paramagnetic resonance and time-resolved pump-probe Faraday rotation. Both techniques address the 4f ground state, while pump-probe Faraday rotation also provides access to the excited 5d state. We measure a millisecond spin-lattice relaxation time T1, a microsecond spin coherence time T2, and a ∼10 ns inhomogeneous spin dephasing time T2∗ for the Ce3+ ground state at low temperatures. The spin-lattice relaxation of Ce3+ ions is due to modified Raman processes involving the optical phonon mode at ∼125cm-1. The relaxation at higher temperature goes through a first excited level of the F522 term at about ω≈228cm-1. Effects provided by the hyperfine interaction of the Ce3+ with the Al27 nuclei are observed.

UR - https://www.scopus.com/pages/publications/85028985064

U2 - 10.1103/PhysRevB.96.075160

DO - 10.1103/PhysRevB.96.075160

M3 - 文章

AN - SCOPUS:85028985064

SN - 2469-9950

VL - 96

JO - Physical Review B

JF - Physical Review B

IS - 7

M1 - 075160

ER -

Electron spin dynamics of Ce3+ ions in YAG crystals studied by pulse-EPR and pump-probe Faraday rotation

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