Abstract
Using photoemission spectroscopy, the electronic structure around the two-dimensional filling-control metal-insulator transition (MIT) of La1.17-xPbx VS3.17 has been studied. The density of state at the Fermi level disappears in going to the insulating phase, i.e., as x approaches ∼ 0.17 or as the temperature decreases at x = 0.15. The chemical potential shift with carrier doping shows a finite jump between the electron- and hole-doped samples and is unusually suppressed around x = 0.17. The results are contrary to a rigid band picture and show the presence of a pseudogap in the metallic phase.
Original language | English |
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Pages (from-to) | 263-265 |
Number of pages | 3 |
Journal | Journal of Magnetism and Magnetic Materials |
Volume | 226-230 |
Issue number | PART I |
DOIs | |
Publication status | Published - 2001 Jan 1 |
Externally published | Yes |
Keywords
- Electronic structure
- Phase transitions-metal-insulator
- Photoemission
- Two-dimensional systems
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics