Muonic atom as an acceptor centre in diamond

Polarized negative muons were used to study the behaviour of the boron acceptor centre in diamond produced by the chemical vapour deposition (CVD) method. The temperature dependence of the muon spin relaxation rate and spin precession frequency were measured in the range of 20 – 330 K in a transvers...

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Bibliographic Details
Published in:Journal of physics. Conference series 2014-01, Vol.551 (1), p.12046-6
Main Authors: Mamedov, T N, Baturin, A S, Gritsaj, K I, Maisuradze, A, Ralchenko, V G, Scheuermann, R, Sedlak, K, Stoykov, A V
Format: Article
Language:English
Subjects:
Boron
Chemical vapor deposition
Diamonds
Magnetic permeability
Magnetic properties
Muon spin relaxation
Muons
Particle spin
Physics
Precession
Temperature dependence
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Summary:Polarized negative muons were used to study the behaviour of the boron acceptor centre in diamond produced by the chemical vapour deposition (CVD) method. The temperature dependence of the muon spin relaxation rate and spin precession frequency were measured in the range of 20 – 330 K in a transverse magnetic field of 14 kOe. The muon polarization amplitude P(t 0) does not depend on the temperature and the muon spin relaxation rate decreases as the temperature increases. For the first time a negative shift of the muon spin precession was observed in diamond. The measurements show that the magnetic susceptibility of the CVD sample is negligible (χ -4.13(2)·10−7cm3/g at 20 K) and it could not be the reason of the negative shift muon spin precession frequency. The negative shift of the muon spin precession frequency is tentatively attributed to an anisotropic hyperfine interaction in the boron acceptor in diamond.
ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/551/1/012046