Interplay between disorder and electronic correlations in compositionally complex alloys.

Redka, David; Khan, Saleem Ayaz; Martino, Edoardo; Mettan, Xavier; Ciric, Luka; Tolj, Davor; Ivsic, Trpimir; Held, Andreas; Caputo, Marco; Guedes, Eduardo Bonini; Strocov, Vladimir N; Di Marco, Igor; Ebert, Hubert; Huber, Heinz P; Dil, J Hugo; Forró, László; Minár, Ján

Redka, David; Khan, Saleem Ayaz; Martino, Edoardo; Mettan, Xavier; Ciric, Luka; Tolj, Davor; Ivsic, Trpimir; Held, Andreas; Caputo, Marco; Guedes, Eduardo Bonini; Strocov, Vladimir N; Di Marco, Igor; Ebert, Hubert; Huber, Heinz P; Dil, J Hugo; Forró, László; Minár, Ján.

Afiliación

Redka D; New Technologies Research Center, University of West Bohemia, Plzen, Czech Republic.
Khan SA; Department of Applied Sciences and Mechatronics, Munich University of Applied Sciences HM, Munich, Germany.
Martino E; New Technologies Research Center, University of West Bohemia, Plzen, Czech Republic.
Mettan X; Institute of Physics, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.
Ciric L; Institute of Physics, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.
Tolj D; Institute of Physics, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.
Ivsic T; Institute of Physics, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.
Held A; Institute of Physics, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.
Caputo M; Department of Physical Chemistry, Ruder Boskovic Institute, Zagreb, Croatia.
Guedes EB; Department of Chemistry, Ludwig-Maximilians-University Munich, Munich, Germany.
Strocov VN; Photon Science Division, Paul Scherrer Institut, Villigen, Switzerland.
Di Marco I; Photon Science Division, Paul Scherrer Institut, Villigen, Switzerland.
Ebert H; Photon Science Division, Paul Scherrer Institut, Villigen, Switzerland.
Huber HP; Institute of Physics, Nicolaus Copernicus University, Torun, Poland.
Dil JH; Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden.
Forró L; Department of Chemistry, Ludwig-Maximilians-University Munich, Munich, Germany.
Minár J; New Technologies Research Center, University of West Bohemia, Plzen, Czech Republic. heinz.huber@hm.edu.

Nat Commun ; 15(1): 7983, 2024 Sep 12.

Article en En | MEDLINE | ID: mdl-39266550

ABSTRACT

ABSTRACT

Owing to their exceptional mechanical, electronic, and phononic transport properties, compositionally complex alloys, including high-entropy alloys, represent an important class of materials. However, the interplay between chemical disorder and electronic correlations, and its influence on electronic structure-derived properties, remains largely unexplored. This is addressed for the archetypal CrMnFeCoNi alloy using resonant and valence band photoemission spectroscopy, electrical resistivity, and optical conductivity measurements, complemented by linear response calculations based on density functional theory. Utilizing dynamical mean-field theory, correlation signatures and damping in the spectra are identified, highlighting the significance of many-body effects, particularly in states distant from the Fermi edge. Electronic transport remains dominated by disorder and potentially short-range order, especially at low temperatures, while visible-spectrum optical conductivity and high-temperature transport are influenced by short quasiparticle lifetimes. These findings improve our understanding of element-specific electronic correlations in compositionally complex alloys and facilitate the development of advanced materials with tailored electronic properties.

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2024 Tipo del documento: Article País de afiliación: República Checa Pais de publicación: Reino Unido

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