corner
corner
APS » Journals » Phys. Rev. Lett. » Volume 102 » Issue 8
< Previous Article | Next Article >

Phys. Rev. Lett. 102, 087603 (2009) [4 pages]

Coherent Manipulation and Decoherence of S=10 Single-Molecule Magnets

Download: PDF (948 kB) Buy this article Export: BibTeX or EndNote (RIS)

Susumu Takahashi1,*, Johan van Tol2, Christopher C. Beedle3, David N. Hendrickson3, Louis-Claude Brunel2,†, and Mark S. Sherwin1
1Department of Physics and Center for Terahertz Science and Technology, University of California, Santa Barbara, California 93106
2National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310
3Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093

Received 6 October 2008; published 24 February 2009

We report coherent manipulation of S=10 Fe8 single-molecule magnets. The temperature dependence of the spin decoherence time T2 measured by high-frequency pulsed electron paramagnetic resonance indicates that strong spin decoherence is dominated by Fe8 spin bath fluctuations. By polarizing the spin bath in Fe8 single-molecule magnets at magnetic field B=4.6  T and temperature T=1.3  K, spin decoherence is significantly suppressed and extends the spin decoherence time T2 to as long as 712 ns. A second decoherence source is likely due to fluctuations of the nuclear spin bath. This hints that the spin decoherence time can be further extended via isotopic substitution to smaller nuclear magnetic moments.

© 2009 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.102.087603
DOI:
10.1103/PhysRevLett.102.087603
PACS:
76.30.−v, 03.65.Yz, 75.50.Xx

*susumu@iqcd.ucsb.edu

†Present address: Center for Terahertz Science and Technology, University of California, Santa Barbara, CA, USA.

 
< Previous Article | Next Article >