Spin Liquid State around a Doped Hole in Insulating Cuprates

Details Spin Liquid State around a Doped Hole in Insulating Cuprates Spin Liquid State around a Doped Hole in Insulating Cuprates

1999-04-16

arxiv.org/abs/cond-mat/9904231v2

J. Phys. Soc. Jpn. Vol.69, No.1, pp.9-12 (2000)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 4 EPS figures, to be published in J. Phys. Soc. Jpn. Vol. 69, No.1 January, 2000

Scientific paper

10.1143/JPSJ.69.9

The numerically exact diagonalization study on small clusters of the t-J model with the second- and third- neighbor hopping terms shows that a novel spin liquid state is realized around a doped hole with momentum k=(pi,0) and energy \sim 2J compared with that with (pi/2,pi/2) in insulating cuprates, where the spin and charge degrees of freedom are approximately decoupled. Our finding implies that the excitations in the insulating cuprates are mapped onto the the d-wave resonating valence bond state.

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