Research output: Contribution to journal › Article › peer-review
Stimulated spin noise in an activated crystal. / Sharipova, M.M. ; Kamenskii, A.A. ; Ryzhov, I.I.; Petrov, M.Yu.; Kozlov, G.G.; Greilich, A.; Bayer, M.; Zapasskii, V.S.
In: Journal of Applied Physics, Vol. 126, No. 14, 143901, 14.10.2019, p. 143901.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Stimulated spin noise in an activated crystal
AU - Sharipova, M.M.
AU - Kamenskii, A.A.
AU - Ryzhov, I.I.
AU - Petrov, M.Yu.
AU - Kozlov, G.G.
AU - Greilich, A.
AU - Bayer, M.
AU - Zapasskii, V.S.
PY - 2019/10/14
Y1 - 2019/10/14
N2 - In the spin noise spectroscopy, the magnetic susceptibility spectrum is known to be provided by the spinsystem untouched by any external perturbation, or, better to say, disturbed only by its thermal bath. We propose a new version of the spin noise spectroscopy, with the detected magnetization (Faraday-rotation)noise being stimulated by an external fluctuating magnetic field with a quasi-white spectrum. Experimental study of the stimulated spin noise performed on a BaF2 : U 3+ crystal in a longitudinal magnetic field has revealed specific features of this approach and allowed us to identify the Van-Vleck and population-related contributions to the AC susceptibility of the system and to discover unusual magnetic-field dependence of the longitudinal spin relaxation rate in low magnetic fields. It is shown that spectra of the stimulated and spontaneous spin noise, being both closely related to the spin-system magnetic susceptibility, are still essentially different. Distinctions between the two types of the spin-noise spectra and two approaches to the spin noise spectroscopy are discussed.
AB - In the spin noise spectroscopy, the magnetic susceptibility spectrum is known to be provided by the spinsystem untouched by any external perturbation, or, better to say, disturbed only by its thermal bath. We propose a new version of the spin noise spectroscopy, with the detected magnetization (Faraday-rotation)noise being stimulated by an external fluctuating magnetic field with a quasi-white spectrum. Experimental study of the stimulated spin noise performed on a BaF2 : U 3+ crystal in a longitudinal magnetic field has revealed specific features of this approach and allowed us to identify the Van-Vleck and population-related contributions to the AC susceptibility of the system and to discover unusual magnetic-field dependence of the longitudinal spin relaxation rate in low magnetic fields. It is shown that spectra of the stimulated and spontaneous spin noise, being both closely related to the spin-system magnetic susceptibility, are still essentially different. Distinctions between the two types of the spin-noise spectra and two approaches to the spin noise spectroscopy are discussed.
KW - Stochastic processes
KW - Spin noise spectroscopy
KW - Spectrum analyzers
KW - Electronic noise
KW - Electronic transport
KW - Hyperfine structure
KW - Nuclear magnetic resonance
KW - Faraday effect
KW - magnetic fields
KW - AC SUSCEPTIBILITY
KW - MAGNETOOPTICAL METHOD
KW - SPECTROSCOPY
KW - ELECTRON-PARAMAGNETIC-RESONANCE
UR - https://aip.scitation.org/doi/10.1063/1.5116901?ai=1gvoi&mi=3ricys&af=R&feed=most-recent
UR - http://www.scopus.com/inward/record.url?scp=85073254965&partnerID=8YFLogxK
UR - http://www.mendeley.com/research/stimulated-spin-noise-activated-crystal
U2 - 10.1063/1.5116901
DO - 10.1063/1.5116901
M3 - Article
VL - 126
SP - 143901
JO - Journal of Applied Physics
JF - Journal of Applied Physics
SN - 0021-8979
IS - 14
M1 - 143901
ER -
ID: 46232321