Electronic Resource
Springer
Journal of low temperature physics
95 (1994), S. 299-308
ISSN:
1573-7357
Keywords:
75.10
;
74.20
;
74.72
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The key elements in all known cuprate superconductors are lightly doped CuOi-planes. Recently a new homologous series of compounds Srn−1Cun+1O2n have been reported in which the planes contain a parallel array of line defects which form a trellis lattice with ladder-segments of the square lattice weakly coupled through triangular line defects. The width of the ladder segments is determined by the parameter n and varies from single chains to arbitrarily wide ladders. The magnetic properties of undoped compounds will be dominated by the properties of the ladders. Heisenberg s = 1/2 ladders can have a spin liquid groundstate with a spin gap if the number of rungs is odd so that a short range RVB groundstate is predicted for such trellis lattices. Using a t-J model to describe the doped material leads to the prediction of a d-wave RVB superconducting groundstate with a large spin gap.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00754945
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