Magnetic field and temperature sensing with atomic-scale spin defects in silicon carbide.
Magnetic field and temperature sensing with atomic-scale spin defects in silicon carbide.
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DOI:
10.1038/srep05303
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发表时间:
2014-07-04
影响因子:
4.6
通讯作者:
Dyakonov V
中科院分区:
文献类型:
--
作者:
Kraus H;Soltamov VA;Fuchs F;Simin D;Sperlich A;Baranov PG;Astakhov GV;Dyakonov V
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.
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