Journal
PHYSICAL REVIEW B
Volume 102, Issue 13, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.102.134210
Keywords
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Funding
- US Army Research Laboratory
- U.S. Army Research Office [W911NF1510548]
- NSF Electronics, Photonics, and Magnetic Devices program [ECCS-1408075]
- NSF Physics of Living Systems program [PHY-1504610]
- Integrated NSF Support Promoting Interdisciplinary Research and Education program [EAR-1647504]
- Lockheed Martin [A32198]
- NSF [1541959]
- Fannie and John Hertz Foundation Graduate Fellowship
- NSF Graduate Research Fellowship [1122374]
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We present a combined theoretical and experimental study of solid-state spin decoherence in an electronic spin bath, focusing specifically on ensembles of nitrogen-vacancy (NV) centers in diamond and the associated substitutional nitrogen spin bath. We perform measurements of NV spin free-induction decay (FID) times T-2* and spin-echo coherence times T-2 in 25 diamond samples with nitrogen concentrations [N] ranging from 0.01 to 300 ppm. We introduce a microscopic model and perform numerical simulations to quantitatively explain the degradation of both T-2* and T-2 over four orders of magnitude in [N]. Our analysis enables us to describe the NV ensemble spin coherence decay shapes as emerging consistently from the contribution of many individual NV centers.
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