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Title: Thermoelectric power as a probe of density of states in correlated actinide materials: The case of PuCoGa5 superconductor

Journal Article · · Physical Review B
 [1];  [2];  [3];  [4]
  1. Idaho National Lab. (INL), Idaho Falls, ID (United States)
  2. European Commission, Karlsruhe (Germany). Joint Research Centre, Inst. for Transuranium Elements
  3. Temple Univ., Philadelphia, PA (United States). Dept. of Physics
  4. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

We present measurements of the thermoelectric power of the plutonium-based unconventional superconductor PuCoGa5. The data is interpreted within a phenomenological model for the quasiparticle density of states of intermediate valence systems and the results are compared with results obtained from photoemission spectroscopy. The results are consistent with intermediate valence nature of 5f-electrons, furthermore, we propose that measurements of the Seebeck coefficient can be used as a probe of density of states in this material, thereby providing a link between transport measurements and photoemission in strongly correlated materials. Here, we discuss these results and their implications for the electronic structure determination of other strongly correlated systems, especially nuclear materials.

Research Organization:
Idaho National Laboratory (INL), Idaho Falls, ID (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC07-05ID14517; FG02-01ER45872; AC52-06NA25396
OSTI ID:
1369437
Alternate ID(s):
OSTI ID: 1331407; OSTI ID: 1415374
Report Number(s):
INL/JOU-16-39090; LA-UR-17-22208; PRBMDO; TRN: US1702660
Journal Information:
Physical Review B, Vol. 94, Issue 19; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 7 works
Citation information provided by
Web of Science

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Cited By (1)

Crystal electric field contribution to the thermoelectric power of the CeCoAl 4 antiferromagnetic journal December 2018