Disorder and quasiparticle interference in heavy-fermion materials

Abstract

Using a large-N approach, we study the effect of disorder in the Kondo-screened phase of heavy-fermion materials. We demonstrate that the strong feedback between the hybridization and the conduction electron charge density magnifies the effect of disorder, such that already small concentrations of defects strongly disorder the materials' local electronic structure, while only weakly affecting their spatially averaged, thermodynamic properties. Finally, we show that the microscopic nature of defects can be identified through their characteristic signatures in the hybridization and quasiparticle interference spectrum.

5 pages; v2: published version

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Cited by in corpus (8)

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• Quasiparticle interference from magnetic impurities
• Theory of Scanning Tunneling Spectroscopy: from Kondo Impurities to Heavy Fermion Materials
• Holographic Maps of Quasiparticle Interference
• Multiparameter universality and conformal field theory for anisotropic confined systems: test by Monte Carlo simulations
• Spatial interferences in the electron transport of heavy fermion materials
• Phase Structure and Machine Learning Identification in One Dimensional Systems with Power Law Correlated Disorder and Long Range Hopping