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Electronic Structure of PuCoGa5 and UCoGa5

Published online by Cambridge University Press:  26 February 2011

Eric Bauer ,
T. Durakiewicz ,
M. T. Butterfield ,
E. Guziewicz ,
J. J. Joyce ,
C. G. Olson ,
L. A. Morales ,
J. L. Sarrao  and
J. D. Thompson
Eric Bauer
Affiliation:
edbauer@lanl.gov, Los Alamos National Laboratory, Los Alamos National Lab, PO Box 1663, MS K764, Los Alamos, NM, 87545, United States
T. Durakiewicz
Affiliation:
edbauer@lanl.gov, LANL
M. T. Butterfield
Affiliation:
edbauer@lanl.gov, LANL
E. Guziewicz
Affiliation:
edbauer@lanl.gov, Polish Academy of Sciences
J. J. Joyce
Affiliation:
edbuaer@lanl.gov, LANL
C. G. Olson
Affiliation:
edbauer@lanl.gov, Iowa State University, Ames Lab
L. A. Morales
Affiliation:
edbauer@lanl.gov, LANL
J. L. Sarrao
Affiliation:
edbauer@lanl.gov, LANL
J. D. Thompson
Affiliation:
edbauer@lanl.gov, LANL
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Abstract

The electronic structure of the Pu-based superconductor PuCoGa5 and the Pauli paramagnet UCoGa5 is investigated using photoemission spectroscopy. The photoemission data of PuCoGa5 reveal features at the Fermi energy EF and about 1-1.5 eV below EF indicative of itinerant and localized f-electrons, respectively. Angle-resolved spectra of UCoGa5 show two peaks at similar energies that are highly dispersive, providing evidence for itinerant character of the f-electrons in this material. A comparison of the PuCoGa5 and UCoGa5 data to the spectra of α-Pu and δ-Pu serves to place PuCoGa5 within the context of the more general electronic structure problem in elemental Pu.

Keywords

actinideelectronic structuresuperconducting
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 893: Symposium JJ – Actinides 2005 – Basic Science, Applications and Technology , 2005 , 0893-JJ02-02
Copyright
Copyright © Materials Research Society 2006

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References

REFERENCES

[1] Albers, R. C., Nature 410, 759 (2001).Google Scholar
[2] Hecker, S.S., Challenges in Plutonium Science, Los Alamos Science, 26, 290 (2000).Google Scholar
[3] e.g., Brooks, M. S. S. in Handbook on the Physics and Chemistry of the Actinides (North-Holland, 1984), Freeman, A. J., Lander, G. H. (Eds.).Google Scholar
[4] Soderlind, P. et al. Phys. Rev. B 55, 1997 (1997).Google Scholar
[5] Eriksson, O. et al. J. Alloys and Comp. 287, 1 (1999).Google Scholar
[6] Soderlind, P. et al. Nature 374, 524 (1995).Google Scholar
[7] Freeman, A. J., Lander, G. H. (Eds.), Handbook on the Physics and Chemistry of the Actinides (North-Holland, 1984).Google Scholar
[8] Soderlind, P. et al. Phys. Rev. B 42, 4544 (1990).Google Scholar
[9] Sarrao, J. L. et al. Nature 420, 297 (2002).Google Scholar
[10] Wastin, F. et al. J. Phys. Condens. Matter 15, S2279 (2003).Google Scholar
[11] Bauer, E. D. et al. Phys. Rev. Lett. 93, 147005 (2004).Google Scholar
[12] Curro, N. J. et al. Nature 434, 622 (2005).Google Scholar
[13] Joyce, J. J. et al. Phys. Rev. Lett. 91, 176401 (2003).Google Scholar
[14] Moreno, N. O. et al. Phys. Rev. B 72, 035119 (2005).Google Scholar
[15] Yeh, J.J. and Lindau, I., Atomic Data and Nuclear Data Tables, 32, 1 (1985).Google Scholar
[16] Wills, J.M. et al. , J. Elect. Spectr. & Related Phenom. 135, 163 (2004).Google Scholar
[17] Arko, A.J. et al. , Phys. Rev. B 62, 1773 (2000).Google Scholar
[18] Joyce, J. J. et al. Mat. Res. Soc. Symp. Proc., 802, 239 (2004).Google Scholar
[19] Booth, C. H. et al. (unpublished).Google Scholar
[20] Tokiwa, Y. et al. J. Nucl. Sci. Technol. 3, 210 (2002).Google Scholar
[21] Butterfield, M. T. et al. (unpublished).Google Scholar
[22] see, for example, Lashley, J. C. et al. , Phys. Rev. B 71, 054416 (2005).Google Scholar
[23] Savrasov, S. Y. et al. Nature 410, 793 (2001).Google Scholar
[24] Maehira, T. et al. Phys. Rev. Lett. 90, 207007 (2003).Google Scholar