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Spin Relaxation of the Neutral Germanium‐Vacancy Center in Diamond
Author(s) -
Komarovskikh Andrey,
Uvarov Mikhail,
Nadolinny Vladimir,
Palyanov Yuri
Publication year - 2018
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201800193
Subject(s) - germanium , diamond , spin (aerodynamics) , vacancy defect , materials science , condensed matter physics , center (category theory) , relaxation (psychology) , engineering physics , atomic physics , physics , optoelectronics , crystallography , chemistry , silicon , medicine , metallurgy , thermodynamics
The germanium‐vacancy center in diamond is actively studied because it is promising in various quantum‐optical and quantum‐informational applications. There is not much information about the paramagnetic neutral germanium‐vacancy center (GeV 0 ) in triplet spin state. In this work, the spin relaxation of the GeV 0 is studied by pulse electron paramagnetic resonance (EPR) technique at low temperatures. It is shown that spin‐lattice and spin‐spin relaxation times for the GeV 0 are shorter than corresponding times for the neutral silicon‐vacancy center. The Orbach mechanism of spin‐lattice relaxation dominates for the GeV 0 center in the temperature range 80–110 K (activation energy E a = 39(6) meV).