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Title: Coherent band excitations in CePd3: A comparison of neutron scattering and ab initio theory

Journal Article · · Science
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [5];  [6]; ORCiD logo [6]; ORCiD logo [7]; ORCiD logo [7]; ORCiD logo [7]; ORCiD logo [8]
  1. Joint Institute for Nuclear Research, Dubna (Russia). Frank Laboratory of Neutron Physics
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division; Univ. of Chicago, IL (United States). Department of Physics
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
  4. Argonne National Lab. (ANL), Argonne, IL (United States); Karlsruhe Institute of Technology (Germany). Institute for Solid State Physics
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Instrument and Source Division
  6. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Condensed Matter Division
  7. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  8. Los Alamos National Lab. (LANL), Los Alamos, NM (United States) ; Univ. of California, Irvine, CA (United States). Dept. of Physics and Astronomy

In common with many strongly correlated electron systems, intermediate valence compounds are believed to display a crossover from a high-temperature regime of incoherently fluctuating local moments to a low-temperature regime of coherent hybridized bands. In this work, we show that inelastic neutron scattering measurements of the dynamic magnetic susceptibility of CePd3 provides a benchmark for ab initio calculations based on dynamical mean field theory. The magnetic response is strongly momentum dependent thanks to the formation of coherent f-electron bands at low temperature, with an amplitude that is strongly enhanced by local particle-hole interactions. Finally, the agreement between experiment and theory shows that we have a robust first-principles understanding of the temperature dependence of f-electron coherence.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; Russian Foundation for Basic Research
DOE Contract Number:
AC02-06CH11357
OSTI ID:
1419941
Journal Information:
Science, Vol. 359, Issue 6372; ISSN 0036-8075
Publisher:
AAAS
Country of Publication:
United States
Language:
English

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Cited By (6)

Thermoelectricity in correlated narrow-gap semiconductors journal April 2018
Topological phase transition in the archetypal f -electron correlated system of cerium journal November 2019
Itinerant-localized crossover and orbital dependent correlations for 4 f electrons in cerium-based ternary 122 compounds journal November 2018
Ultrahigh-resolution neutron spectroscopy of low-energy spin dynamics in UGe 2 journal January 2019
Spin Waves in Detwinned BaFe 2 As 2 journal August 2018
Toward a predictive theory of correlated materials journal July 2018

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