Characteristic Energy of the Coulomb Interactions and the Pileup of States
Autor: | Mazur, Daniel, Gray, K. E., Zasadzinski, J. F., Ozyuzer, L., Beloborodov, I. S., Zheng, H., Mitchell, J. F. |
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Rok vydání: | 2007 |
Předmět: | |
Zdroj: | Phys. Rev. B 76, 193102 (2007) |
Druh dokumentu: | Working Paper |
DOI: | 10.1103/PhysRevB.76.193102 |
Popis: | Tunneling data on $\mathrm{La_{1.28}Sr_{1.72}Mn_2O_7}$ crystals confirm Coulomb interaction effects through the $\sqrt{\mathrm{E}}$ dependence of the density of states. Importantly, the data and analysis at high energy, E, show a pileup of states: most of the states removed from near the Fermi level are found between ~40 and 130 meV, from which we infer the possibility of universal behavior. The agreement of our tunneling data with recent photoemission results further confirms our analysis. Comment: 4 pages, 4 figures, submitted to PRL |
Databáze: | arXiv |
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