Hole dynamics and effective hole-hole interaction in a quantum antiferromagnet
نویسندگان
چکیده
منابع مشابه
Hole Pair in an Antiferromagnet
(Received) Exact diagonalizations of two dimensional small t–J clusters reveal dominant hole-hole correlations at distance √ 2 (ie between holes on next nearest neighbor sites). A new form of singlet d x 2 −y 2 pair operator is proposed to account for the spatial extention of the two hole-bound pair beyond nearest neighbor sites.
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The one-hole spectral weight for two chains and two dimensional lattices is studied numerically using a new method of analysis of the spectral function within the Lanczos iteration scheme: the Lanczos spectra decoding method. This technique is applied to the t−Jz model for Jz → 0, directly in the infinite size lattice. By a careful investigation of the first 13 Lanczos steps and the first 26 on...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 1991
ISSN: 0163-1829,1095-3795
DOI: 10.1103/physrevb.43.8733