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Tao Y, Eichler A, Holzherr T, et al. Ultrasensitive mechanical detection of magnetic moment using a commercial disk drive write head. Nat Commun. 2016;7:12714doi: 10.1038/ncomms12714.
Tao, Y., Eichler, A., Holzherr, T., & Degen, C. L. (2016). Ultrasensitive mechanical detection of magnetic moment using a commercial disk drive write head. Nature communications, 712714. https://doi.org/10.1038/ncomms12714
Tao, Y, et al. "Ultrasensitive mechanical detection of magnetic moment using a commercial disk drive write head." Nature communications vol. 7 (2016): 12714. doi: https://doi.org/10.1038/ncomms12714
Tao Y, Eichler A, Holzherr T, Degen CL. Ultrasensitive mechanical detection of magnetic moment using a commercial disk drive write head. Nat Commun. 2016 Sep 20;7:12714. doi: 10.1038/ncomms12714. PMID: 27647039; PMCID: PMC5034305.
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Nat Commun. 2016 Sep 20;7:12714. doi: 10.1038/ncomms12714.

Ultrasensitive mechanical detection of magnetic moment using a commercial disk drive write head.

Nature communications

Y Tao, A Eichler, T Holzherr, C L Degen

Affiliations

  1. Department of Physics, ETH Zurich, Otto Stern Weg 1, 8093 Zurich, Switzerland.

PMID: 27647039 PMCID: PMC5034305 DOI: 10.1038/ncomms12714

Abstract

Sensitive detection of weak magnetic moments is an essential capability in many areas of nanoscale science and technology, including nanomagnetism, quantum readout of spins and nanoscale magnetic resonance imaging. Here we show that the write head of a commercial hard drive may enable significant advances in nanoscale spin detection. By approaching a sharp diamond tip to within 5 nm from a write pole and measuring the induced diamagnetic moment with a nanomechanical force transducer, we demonstrate a spin sensitivity of 0.032 μB Hz(-1/2), equivalent to 21 proton magnetic moments. The high sensitivity is enabled in part by the pole's strong magnetic gradient of up to 28 × 10(6) T m(-1) and in part by the absence of non-contact friction due to the extremely flat writer surface. In addition, we demonstrate quantitative imaging of the pole field with ∼10 nm spatial resolution. We foresee diverse applications for write heads in experimental condensed matter physics, especially in spintronics, ultrafast spin manipulation and mesoscopic physics.

References

  1. Nano Lett. 2009 Aug;9(8):3020-4 - PubMed
  2. Nat Nanotechnol. 2009 Dec;4(12):820-3 - PubMed
  3. J Magn Reson. 2004 Mar;167(1):87-96 - PubMed
  4. Science. 2013 Mar 8;339(6124):1174-9 - PubMed
  5. Phys Rev Lett. 2006 Feb 3;96(4):047202 - PubMed
  6. Phys Rev B Condens Matter. 1994 Jun 1;49(21):15122-15125 - PubMed
  7. Nanotechnology. 2010 Aug 27;21(34):342001 - PubMed
  8. Nano Lett. 2015 Dec 9;15(12):7893-7 - PubMed
  9. J Magn Reson. 2008 Jul;193(1):150-2 - PubMed
  10. Science. 2013 Feb 1;339(6119):557-60 - PubMed
  11. Proc Natl Acad Sci U S A. 2009 Feb 3;106(5):1313-7 - PubMed
  12. Nanotechnology. 2015 Nov 20;26(46):465501 - PubMed
  13. Nat Nanotechnol. 2013 Jul;8(7):493-6 - PubMed
  14. Science. 2013 Feb 1;339(6119):561-3 - PubMed
  15. Nat Nanotechnol. 2014 Sep;9(9):666-70 - PubMed
  16. Phys Rev Lett. 2004 Jul 16;93(3):030501 - PubMed
  17. Science. 2001 Nov 16;294(5546):1488-95 - PubMed
  18. Nat Commun. 2014 Apr 08;5:3638 - PubMed
  19. Nat Nanotechnol. 2013 Sep;8(9):639-44 - PubMed
  20. Science. 2009 Dec 11;326(5959):1520-2 - PubMed
  21. ACS Appl Mater Interfaces. 2016 May 25;8(20):13157-65 - PubMed
  22. Nature. 2004 Jul 15;430(6997):329-32 - PubMed

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