Emergent heavy fermion behavior at the Wigner-Mott transition
Entity
UAM. Departamento de Física Teórica de la Materia CondensadaDate
2013-09-20Citation
10.1103/PhysRevLett.111.126403
Physical Review Letters 111.12 (2013): 126403
ISSN
0031-9007 (print); 1079-7114 (online)DOI
10.1103/PhysRevLett.111.126403Funded by
J. M. acknowledges financial support from MINECO (MAT2012-37263-C02-01). This work is supported by the French National Research Agency through Grant No. ANR-12-JS04-0003-01 SUBRISSYMEProject
Gobierno de España. MAT2012-37263-C02-01Editor's Version
http://dx.doi.org/10.1103/PhysRevLett.111.126403Subjects
FísicaRights
© 2013 American Physical SocietyAbstract
We study charge ordering driven by Coulomb interactions on triangular lattices relevant to the Wigner-Mott transition in two dimensions. Dynamical mean-field theory reveals the pinball liquid phase, a charge ordered metallic phase containing quasilocalized (pins) coexisting with itinerant (balls) electrons. Based on an effective periodic Anderson model for this phase, we find an antiferromagnetic Kondo coupling between pins and balls and strong quasiparticle renormalization. Non-Fermi liquid behavior can occur in such charge ordered systems due to the spin-flip scattering of itinerant electrons off the pins in analogy with heavy fermion compounds
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Google Scholar:Merino Troncoso, Jaime
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Ralko, Arnaud
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Fratini, Simone
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