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|Type:||Artigo de periódico|
|Title:||Phase diagram of the two-leg Kondo ladder|
|Abstract:||The phase diagram of the two-leg Kondo ladder is investigated using computational techniques. Ferromagnetism is present, but only at small conduction electron densities and robust Kondo coupling J. For densities ngreater than or similar to0.4 and any Kondo coupling, a paramagnetic phase is found. We also observed spin dimerization at densities n=1/4 and n=1/2. The spin-structure factor at small J peaks at (d) over right arrow=(2n,0)pi for nless than or similar to0.5, and at (d) over right arrow=(n,1)pi for ngreater than or similar to0.5. The charge structure factor suggests that electrons behave as free particles with spin -1/2 (spin-0) for small (large) J.|
|Editor:||American Physical Soc|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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