Physics – Condensed Matter – Materials Science
Scientific paper
2007-04-13
Phys. Rev. Lett. 98, 246401 (2007)
Physics
Condensed Matter
Materials Science
5 pages, 4 figures
Scientific paper
10.1103/PhysRevLett.98.246401
With high-resolution photoemission spectroscopy measurements, the density of states (DOS) near the Fermi level ($E_\mathrm{F}$) of double perovskite Sr$_2$FeMoO$_6$ having different degrees of Fe/Mo antisite disorder has been investigated with varying temperature. The DOS near $E_\mathrm{F}$ showed a systematic depletion with increasing degree of disorder, and recovered with increasing temperature. Altshuler-Aronov (AA) theory of disordered metals well explains the dependences of the experimental results. Scaling analysis of the spectra provides experimental indication for the functional form of the AA DOS singularity.
Fujimori Atsushi
Kobayashi Mari
Ray Sugata
Sarma Debojit
Tanaka Kanenobu
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