Band structure and Fermi surface of heavy Fermion compounds Ce2TIn8 studied by angle-resolved photoemission spectroscopy

✍ Scribed by S. Souma; S. Raj; J.C. Campuzano; T. Sato; T. Takahashi; S. Ohara; S. Sakamoto

• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 234 KB
• Volume: 403
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/j.physb.2007.10.026

✦ Synopsis

We report a systematic study on the electronic structure of Ce-based heavy Fermion materials Ce 2 TIn 8 (T ¼ Rh, Co, Ir) by highresolution angle-resolved (ARPES) and 4d-4f resonant (RPES) photoemission spectroscopies. We have experimentally determined the band structure and Fermi surface of these three compounds, and found that the Fermi surfaces of three compounds are very similar to each other, having quasi two-dimensional cylindrical Fermi surfaces centered at the M(A) point in the Brillouin zone. RPES results have confirmed the localized picture and, in addition, revealed that Ce 4f electrons in Ce 2 RhIn 8 have a relatively stronger localized nature than those in Ce 2 CoIn 8 . This difference in the localized character explains well the difference in the magnetic property of these compounds.