Spin-charge separation in two-dimensional frustrated quantum magnets.
نویسندگان
چکیده
The dynamics of a mobile hole in two-dimensional frustrated quantum magnets is investigated by exact diagonalization techniques. Our results provide evidence for spin-charge separation upon doping the kagome lattice, a prototype of a spin liquid. In contrast, in the checkerboard lattice, a symmetry broken valence bond crystal, a small quasiparticle peak is seen for some crystal momenta, a finding interpreted as a restoration of weak holon-spinon confinement.
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عنوان ژورنال:
- Physical review letters
دوره 92 23 شماره
صفحات -
تاریخ انتشار 2004