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      Novel behaviors in rare-earth-filled skutterudites studied by bulk-sensitive photoemission spectroscopy

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          Abstract

          The electronic structures of rare-earth-filled skutterudites have been investigated by high-resolution photoemission spectroscopy. In order to reveal their bulk nature, the bulk-sensitive photoemission spectroscopy with soft X-ray (hv∼800 – 1100 eV) and hard X-ray (hv∼8000 eV) is a very powerful tool since the rare-earths' valence and electronic structures on the surface are often different from those in the bulk. Our experimental results clearly show the coexistence of the strongly mixed-valence state and the heavy-fermion state in SmOs 4Sb 12 and the quasi-particle peak near the Fermi level in PrFe 4P 12 induced by the hybridization between the rare-earth 4f and conduction electrons.

          Author and article information

          Journal
          ijmr
          International Journal of Materials Research
          Carl Hanser Verlag
          1862-5282
          2195-8556
          2009
          : 100
          : 9
          : 1249-1251
          Affiliations
          a Faculty of Science and Engineering, Konan University, Kobe, Japan
          b Quantum Nanotechnology Laboratory, Konan University, Kobe, Japan
          c Graduate School of Engineering Science, Osaka University, Osaka, Japan
          d II. Physikalisches Institut, Universität zu Köln, Köln, Germany
          e Faculty of the Integrated Arts and Sciences, The University of Tokushima, Tokushima, Japan
          f Graduate School of Science, Tokyo Metropolitan University, Tokyo, Japan
          g Japan Synchrotron Research Institute, Sayo, Japan
          h RIKEN (SPring-8), Sayo, Japan
          i Graduate School of Science and Technology, Kobe University, Kobe, Japan
          Author notes
          [* ] Correspondence address, Dr. Atsushi Yamasaki Faculty of Science and Engineering, Konan University, Kobe 658-8501, Japan Tel.: +81 78 435 2473 Fax: +81 78 435 2539 E-mail: yamasaki@ 123456konan-u.ac.jp
          Article
          MK110182
          10.3139/146.110182
          ae66f349-4da9-45e5-a0d6-00c8c5a2d1f7
          © 2009, Carl Hanser Verlag, München
          History
          : 25 August 2008
          : 11 December 2008
          Page count
          References: 17, Pages: 3
          Categories
          Applied

          Materials technology,Materials characterization,Materials science
          Filled skutterudite,Electronic structure,Strongly correlated electron systems,Photoemission spectroscopy

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