Spin and optical properties of silicon vacancies in silicon carbide (a review)

Abstract

We discuss the fine structure and spin dynamics of spin-3/2 centers associated with silicon vacancies in silicon carbide. The centers have optically addressable spin states which makes them highly promising for quantum technologies. The fine structure of the spin centers turns out to be highly sensitive to mechanical pressure, external magnetic and electric fields, temperature variation, etc., which can be utilized for efficient room-temperature sensing, particularly by purely optical means or through the optically detected magnetic resonance. We discuss the experimental achievements in magnetometry and thermometry based on the spin state mixing at level anticrossings in an external magnetic field and the underlying microscopic mechanisms. We also discuss spin fluctuations in an ensemble of vacancies caused by interaction with environment.

10 pages, for a special issue of Physica Status Solidi B

References in corpus (11)

• Coherent control of single spins in silicon carbide at room temperature
• Isolated electron spins in silicon carbide with millisecond-coherence times
• Engineering near infrared single photon emitters in ultrapure silicon carbide
• Magnetic field and temperature sensing with atomic-scale spin defects in silicon carbide
• Scalable Quantum Photonics with Single Color Centers in Silicon Carbide
• Resonant addressing and manipulation of silicon vacancy qubits in silicon carbide
• Intrinsic defects in silicon carbide LED as a perspective room temperature single photon source in near infrared
• Optical thermometry based on level anticrossing in silicon carbide
• Scalable fabrication of single silicon vacancy defect arrays in silicon carbide using focused ion beam
• Excitation and recombination dynamics of vacancy-related spin centers in silicon carbide
• Room-temperature near-infrared silicon carbide nanocrystalline emitters based on optically aligned spin defects

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• Symmetry of the Hyperfine and Quadrupole Interactions of Boron Vacancies in a Hexagonal Boron Nitride
• Spectral stability of V2 centres in sub-micron 4H-SiC membranes
• Quantum sensing with duplex qubits of silicon vacancy centers in SiC at room temperature
• Measuring nuclear spin qubits by qudit-enhanced spectroscopy in Silicon Carbide
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• Spin noise at electron paramagnetic resonance
• Suppression of the optical linewidth and spin decoherence of a quantum spin center in a $p$$-$$n$ diode
• Theory of spin center sensing of diffusion
• Interplay between charge and spin noise in the near-surface theory of decoherence and relaxation of $C_{3v}$ symmetry qutrit spin-1 centers
• Relaxation dynamics of spin 3/2 silicon vacancies in 4H-Silicon carbide
• Silicon photonic crystal cavities at near band-edge wavelengths
• Hybrid nanophotonic-nanomagnonic SiC-YiG quantum sensor: I/ theoretical design and properties
• Low-field microwave-free sensors using dipolar spin relaxation of quartet spin states in silicon carbide
• Theory of Spin-Acoustic Resonance for Spin-3/2 Si Vacancy with $C_{3v}$ Site Symmetry in Silicon Carbide
• Long Rayleigh length confocal microscope: A fast evaluation tool for obtaining quantum properties of color centers
• Theory of Magnetoacoustic Resonance to Probe Multipole Effects Due to a Crystal Field Quartet
• Nuclear spin polarization in silicon carbide at room temperature in the Earth's magnetic field
• Acoustically induced coherent spin trapping
• Dynamical Reorientation of Spin Multipoles in Silicon Carbide by Transverse Magnetic Fields