Lifshitz transition in Kondo alloys
| Autor: | Claudine Lacroix, Sébastien Burdin |
|---|---|
| Přispěvatelé: | Laboratoire Ondes et Matière d'Aquitaine (LOMA), Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS), Théorie de la Matière Condensée (TMC), Institut Néel (NEEL), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF) |
| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
heavy fermions
Kondo effect FOS: Physical sciences General Physics and Astronomy 02 engineering and technology Strongly correlated electron systems and heavy fermions Kondo lattice 01 natural sciences Condensed Matter - Strongly Correlated Electrons valence fluctuations 0103 physical sciences Coherent potential approximation Local moment in compounds and alloys heavy-fermion phenomena 010306 general physics Physics Strongly Correlated Electrons (cond-mat.str-el) Condensed matter physics Metal-insulator transitions and other electronic transitions Kondo insulator Fermi surface 021001 nanoscience & nanotechnology Discontinuity (linguistics) PACS numbers: 71.27.+a 71.30.+h 75.20.Hr 75.30.Mb [PHYS.COND.CM-GEN]Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other] Quasiparticle Strongly correlated material Condensed Matter::Strongly Correlated Electrons [PHYS.COND.CM-SCE]Physics [physics]/Condensed Matter [cond-mat]/Strongly Correlated Electrons [cond-mat.str-el] 0210 nano-technology Magnetic impurity |
| Zdroj: | Physical Review Letters Physical Review Letters, American Physical Society, 2013, 110 (22), pp.226403. ⟨10.1103/PhysRevLett.110.226403⟩ |
| ISSN: | 0031-9007 1079-7114 |
| Popis: | We study the low energy states of Kondo alloys as function of the magnetic impurity concentration per site, x, and the conduction electron average site occupation, nc. Using two complementary approaches, the mean-field coherent potential approximation and the strong coupling limit, we identify and characterize two different Fermi liquid regimes. We propose that both regimes are separated by a Lifshitz transition at x = nc. Indeed, we predict a discontinuity of the number of quasiparticles which are enclosed in the Fermi surface. This feature could provide a scenario for the non-Fermi liquid properties that were recently observed in Kondo alloy systems around x = nc. 5 pages, 2 figures |
| Databáze: | OpenAIRE |
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