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APS » Journals » Phys. Rev. Lett. » Volume 88 » Issue 5
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Phys. Rev. Lett. 88, 057202 (2002) [4 pages]

Photoinduced Magnetization in the Organic-Based Magnet Mn(TCNE)x ̇ y(CH2Cl2)

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Dušan A. Pejaković1, Chitoshi Kitamura2, Joel S. Miller2, and Arthur J. Epstein1,3
1Department of Physics, The Ohio State University, Columbus, Ohio 43210-1106
2Department of Chemistry, University of Utah, Salt Lake City, Utah 84112-0850
3Department of Chemistry, The Ohio State University, Columbus, Ohio 43210-1106

Received 8 September 2001; published 18 January 2002

Photoinduced magnetization in a magnet based on organic species is reported for the first time. Upon optical excitation in the blue region of spectrum, Mn(tetracyanoethylene)ẋy(CH2Cl2) (x≈2,y∼0.8) exhibits increased magnetic susceptibility at temperatures as high as 75 K, accompanied with photoinduced absorption in the visible and infrared spectral regions. These effects are partially reversible by lower energy visible light and fully reversible by thermal treatment. The results suggest trapping of the photoexcited charge in a metastable state with enhanced exchange interaction.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.88.057202
DOI:
10.1103/PhysRevLett.88.057202
PACS:
75.90.+w, 75.50.Lk, 75.50.Xx, 78.90.+t
 
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