Kim E, Acosta VM, Bauch E, Budker D, Hemmer PR. Electron spin resonance shift and linewidth broadening of nitrogen-vacancy centers in diamond as a function of electron irradiation dose.
APPLIED PHYSICS LETTERS 2012;
101:82410. [PMID:
22991479 PMCID:
PMC3436910 DOI:
10.1063/1.4747211]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2012] [Accepted: 08/06/2012] [Indexed: 05/05/2023]
Abstract
A high-nitrogen-concentration diamond sample was subjected to 200-keV electron irradiation using a transmission electron microscope. The optical and spin-resonance properties of the nitrogen-vacancy (NV) color centers were investigated as a function of the irradiation dose up to 6.4 × 10(21) e(-)/cm(2). The microwave transition frequency of the NV(-) center was found to shift by up to 0.6% (17.1 MHz) and the linewidth broadened with increasing electron-irradiation dose. Unexpectedly, the measured magnetic sensitivity is best at the lowest irradiation dose, even though the NV concentration increases monotonically with increasing dose. This is in large part due to a sharp reduction in optically detected spin contrast at higher doses.
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