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  Disorder and quasiparticle interference in heavy-fermion materials

Toldin, F. P., Figgins, J., Kirchner, S., & Morr, D. K. (2013). Disorder and quasiparticle interference in heavy-fermion materials. Physical Review B, 88(8): 081101, pp. 081101-1-081101-5. doi:10.1103/PhysRevB.88.081101.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0015-1E80-F Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0015-1E81-D
Genre: Journal Article

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Toldin, F. P., Author
Figgins, J., Author
Kirchner, S.1, Author              
Morr, D. K., Author
Affiliations:
1Stefan Kirchner, cross-PKS/CPfS theory group, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863475              

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 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.

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Language(s): eng - English
 Dates: 2013-08-05
 Publication Status: Published in print
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 Rev. Method: -
 Identifiers: eDoc: 670784
ISI: 000322796300001
DOI: 10.1103/PhysRevB.88.081101
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Title: Physical Review B
Source Genre: Journal
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Pages: - Volume / Issue: 88 (8) Sequence Number: 081101 Start / End Page: 081101-1 - 081101-5 Identifier: ISSN: 1098-0121