2014/03/30 by H. Kraus, Hannes Kraus, V. A. Soltamov +8 · 208 citations
Materials Science · Physics and Astronomy · #Advanced Fiber Laser Technologies #Atomic and Subatomic Physics Research #Carbide #Composite material #Computer science #Condensed matter physics #Crystal (programming language) #Diamond and Carbon-based Materials Research #Field (mathematics) #Magnetic field #Magnetometer #Materials science #Nanotechnology #Optoelectronics #Physics #Silicon #Silicon carbide #Spin (aerodynamics) #Thermal #cond-mat.mtrl-sci
paper · pdf · doi:10.1038/srep05303
published in Scientific Reports 4(1), 5303 (Nature Portfolio) · 8 pages, 7 figures
arxiv created 2014/03/30 · openalex publication_date 2014/07/04 · arxiv updated 2014/07/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Quantum systems can provide outstanding performance in various sensing applications, ranging from bioscience to nanotechnology. Atomic-scale defects in silicon carbide are very attractive in this respect because of the technological advantages of this material and favorable optical and radio frequency spectral ranges to control these defects. We identified several, separately addressable spin-3/2 centers in the same silicon carbide crystal, which are immune to nonaxial strain fluctuations. Some of them are characterized by nearly temperature independent axial crystal fields, making these centers very attractive for vector magnetometry. Contrarily, the zero-field splitting of another center exhibits a giant thermal shift of -1.1 MHz/K at room temperature, which can be used for thermometry applications. We also discuss a synchronized composite clock exploiting spin centers with different thermal response.