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cond-mat.str-el2004
The Role of Grain Boundaries in Determining the Transport Properties in Magnetite
David C. Mertens, W. Montfrooij, R. J. McQueeney +2
We present magnetoresistance and Hall-effect measurements on single crystal magnetite Fe3O4 close to the Verwey transition Tv = 123.8 K. We show that the formation of grain boundar…
cond-mat.str-el2000
Precursory Metal-Insulator transition in a small cluster of the `t-J' model: Exact analytic results
R de Sousa, G G Cabrera
We study the effect of hole hopping in a doped antiferromagnet described by the `t-J' model, using exact analytic solutions for small clusters. In spite of the small size, they rev…