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cond-mat.str-el2002★ 1 cited
Quantum Phase Transitions in Models of Magnetic Impurities
R. Bulla, M. Vojta
Zero temperature phase transitions not only occur in the bulk of quantum systems, but also at boundaries or impurities. We review recent work on quantum phase transitions in impuri…
cond-mat.str-el2002
Photoemission study of polycrystalline Gd_{1-x}Sr_xTiO_{3+delta}: correlation and surface effects
M. Sing, M. Karlsson, D. Schrupp +6
We report photoemission studies of polycrystalline samples of Sr-doped GdTiO_{3+delta}, which undergoes a Mott-Hubbard-like metal-insulator transition at a Ti-concentration of abou…