Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2008-12-04
Proc. Nat. Acad. Sci. 107, 15704-15707 (2010)
Physics
Condensed Matter
Strongly Correlated Electrons
21 pages, 9 figures, including Supporting Information
Scientific paper
10.1073/pnas.1009498107
Metallic magnetism is both ancient and modern, occurring in such familiar settings as the lodestone in compass needles and the hard drive in computers. Surprisingly, a rigorous theoretical basis for metallic ferromagnetism is still largely missing. The Stoner approach perturbatively treates Coulomb interactions when the latter need to be large, while the Nagaoka approach incorporates thermodynamically negligible electrons into a half-filled band. Here, we show that the ferromagnetic order of the Kondo lattice is amenable to an asymptotically exact analysis over a range of interaction parameters. In this ferromagnetic phase, the conduction electrons and local moments are strongly coupled but the Fermi surface does not enclose the latter (i.e. it is small). Moreover, non-Fermi liquid behavior appears over a range of frequencies and temperatures. Our results provide the basis to understand some long-standing puzzles in the ferromagnetic heavy fermion metals, and raises the prospect for a new class of ferromagnetic quantum phase transitions.
Si Qimiao
Yamamoto Seiji J.
No associations
LandOfFree
Metallic Ferromagnetism in the Kondo Lattice does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Metallic Ferromagnetism in the Kondo Lattice, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Metallic Ferromagnetism in the Kondo Lattice will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-364543