PhysRevB.88.081101.pdf (5.11 MB)

Disorder and quasiparticle interference in heavy-fermion materials

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journal contribution
posted on 19.02.2014 by Francesco Parisen Toldin, Jeremy Figgins, Stefan Kirchner, Dirk K. Morr
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.

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Funding

This work is supported by the US Department of Energy under Award No. DE-FG02-05ER46225 (D.K.M.).

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Publisher Statement

This is a copy of an article published in the Physical Review B © 2013 American Physical Society. The final publication is available at http://prb.aps.org/ doi: 10.1103/PhysRevB.88.081101

Publisher

American Physical Society

Language

en_US

issn

1098-0121

Issue date

01/08/2013

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