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Investigation of Surface Magnetic Noise by Shallow Spins in Diamond
Open accessAbstract
We present measurements of spin relaxation times (T1, T1ρ, T2) on very shallow (≲5 nm) nitrogen-vacancy centers in high-purity diamond single crystals. We find a reduction of spin relaxation times up to 30 times compared to bulk values, indicating the presence of ubiquitous magnetic impurities associated with the surface. Our measurements yield a density of 0.01-0.1μB/nm2 and a characteristic correlation time of 0.28(3) ns of surface states, with little variation between samples and chemical surface terminations. A low temperature measurement further confirms that fluctuations are thermally activated. The data support the atomistic picture where impurities are associated with the top carbon layers, and not with terminating surface atoms or adsorbate molecules. The low spin density implies that the presence of a single surface impurity is sufficient to cause spin relaxation of a shallow nitrogen-vacancy center.
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Cites
The nitrogen-vacancy colour centre in diamond
Doherty, M. W., Manson, N. B., Delaney, P., Jelezko, F., Wrachtrup, J., & Hollenberg, L. C. L. (2013) · Physics Reports · doi:10.1016/j.physrep.2013.02.001 · Cited by 2,866
Cited by
Degen, C. L., Reinhard, F., & Cappellaro, P. (2017) · Reviews of Modern Physics · doi:10.1103/revmodphys.89.035002 · Cited by 4,045
Self-citationNitrogen-Vacancy Centers in Diamond: Nanoscale Sensors for Physics and Biology
Schirhagl, R., Chang, K., Loretz, M., & Degen, C. L. (2014) · Annual Review of Physical Chemistry · doi:10.1146/annurev-physchem-040513-103659 · Cited by 1,608
Self-citationSensitivity optimization for NV-diamond magnetometry
Barry, J. F., Schloss, J. M., Bauch, E., Turner, M. J., Hart, C. A., Pham, L. M., & Walsworth, R. L. (2020) · Reviews of Modern Physics · doi:10.1103/revmodphys.92.015004 · Cited by 1,247
Dynamic strain-mediated coupling of a single diamond spin to a mechanical resonator
Ovartchaiyapong, P., Lee, K. W., Myers, B. A., & Jayich, A. C. B. (2014) · Nature Communications · doi:10.1038/ncomms5429 · Cited by 397
Submillihertz magnetic spectroscopy performed with a nanoscale quantum sensor
Schmitt, S., Gefen, T., Stürner, F. M., Unden, T., Wolff, G., Müller, C., Scheuer, J., Naydenov, B., Markham, M., Pezzagna, S., et al. (2017) · Science · doi:10.1126/science.aam5532 · Cited by 359
Metadata
- Authors
- Rosskopf, T., Dussaux, A., Ohashi, K., Loretz, M., Schirhagl, R., Watanabe, H., Shikata, S., Itoh, K. M., & Degen, C. L.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2014-04-09
- Volume
- 112
- Issue
- 14
- Pages
- 147602-147602
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W1503467050
- Cited by
- 220
- References
- 1
- FWCI
- 7.59
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Rosskopf, T., Dussaux, A., Ohashi, K., Loretz, M., Schirhagl, R., Watanabe, H., Shikata, S., Itoh, K. M., & Degen, C. L. (2014). Investigation of Surface Magnetic Noise by Shallow Spins in Diamond. Physical Review Letters. https://doi.org/10.1103/physrevlett.112.147602
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