Pseudogap Formation in the Intermetallic Compounds
- 17 April 2000
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 84 (16), 3674-3677
- https://doi.org/10.1103/physrevlett.84.3674
Abstract
Optical conductivity data of the intermetallic compounds ( ) reveal that their density of states around the Fermi energy ( ) is strongly reduced as is increased. In particular, ( ) has a deep, well-developed pseudogap of at and a small density ( ) of carriers, which is highly unusual for intermetallic compounds. It is shown that the pseudogap results from the band structure of , rather than from temperature-dependent correlation effects. Based on the present results, we propose a simple model that consistently explains both the semiconductorlike transport and the metallic photoemission results previously observed for .
Keywords
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