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APS » Journals » Phys. Rev. Lett. » Volume 88 » Issue 18
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Phys. Rev. Lett. 88, 187203 (2002) [4 pages]

Segmented Band Mechanism for Itinerant Ferromagnetism

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C. D. Batista1, J. Bonča2, and J. E. Gubernatis1
1Center for Nonlinear Studies and Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
2Faculty of Mathematics and Physics, University of Ljubljana and J. Stefan Institute, Ljubljana, Slovenia

Received 2 October 2001; published 22 April 2002

We introduce a novel mechanism for itinerant ferromagnetism, which is based on a simple two-band model, and, by using numerical and analytical methods, we show that the periodic Anderson model contains this mechanism. We propose that the mechanism, which does not assume an intra-atomic Hund’s coupling, is present in both the iron group and some f electron compounds.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.88.187203
DOI:
10.1103/PhysRevLett.88.187203
PACS:
75.10.Lp
 
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