Journal article
Theory of spin center sensing of diffusion and other surface electric dynamics
Physical review. B, Vol.110(17), 174450
11/27/2024
DOI: 10.1103/PhysRevB.110.174450
Abstract
Surface electric dynamics influences the quantum coherence of near-surface spin centers (i.e., T1 and T2 times) through spatial and temporal fluctuations of the surface charge density and the electrostatic potential at the crystal surface that are described by the spectral noise density S(omega). We find that the electric noise's S(omega) dependence on the depth d of a spin center below the surface follows a power law d-gamma not solely determined by whether the surface charges move as localized pointlike charges (monopoles) or dipoles. The exponent gamma instead reveals the structure of the surface charge and surface potential correlation functions. For surface dynamics originating from diffusion, the spin center's relaxation and decoherence times exhibit a temporal crossover near the correlation time of the fluctuators and thus provide a quantitative fingerprint of the diffusive behavior of charged particles at surfaces.
Details
- Title: Subtitle
- Theory of spin center sensing of diffusion and other surface electric dynamics
- Creators
- Denis R. Candido - University of IowaMichael E. Flatte - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Physical review. B, Vol.110(17), 174450
- DOI
- 10.1103/PhysRevB.110.174450
- ISSN
- 2469-9950
- eISSN
- 2469-9969
- Publisher
- Amer Physical Soc
- Number of pages
- 9
- Grant note
- DE-SC0021314 / Center for Molecular Quantum Transduction, an Energy Frontier Research Center - U.S. Department of Energy, Office of Science, Basic Energy Sciences; United States Department of Energy (DOE)
- Language
- English
- Date published
- 11/27/2024
- Academic Unit
- Electrical and Computer Engineering; Physics and Astronomy
- Record Identifier
- 9984759889702771
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