Nonmagnetic Impurities in Spin Gap Systems
- 15 December 1996
- journal article
- letter
- Published by Physical Society of Japan in Journal of the Physics Society Japan
- Vol. 65 (12) , 3724-3727
- https://doi.org/10.1143/jpsj.65.3724
Abstract
The effect of nonmagnetic impurities in the two-leg Heisenberg ladder system and other spin liquids with excitation gap is discussed. It is shown that the random depletion of spins introduces a random Berry phase term into the nonlinear σ model. The classical nature of the antiferromagnetic correlation is enhanced by the topological decoherence, and the staggered susceptibility shows more singular behavior at low temperatures than the uniform antiferromagnetic Heisenberg chain.Keywords
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This publication has 15 references indexed in Scilit:
- Effects of Nonmagnetic Impurity Doping on Spin Ladder SystemJournal of the Physics Society Japan, 1996
- Low-Temperature Properties of the Randomly Depleted Heisenberg LadderJournal of the Physics Society Japan, 1996
- Impurity Induced Antiferromagnetism in Spin-1/2 Heisenberg Two-Leg Ladder SystemsJournal of the Physics Society Japan, 1996
- The nonlinear sigma model and spin laddersJournal of Physics A: General Physics, 1996
- Surprises on the Way from One- to Two-Dimensional Quantum Magnets: The Ladder MaterialsScience, 1996
- Semiclassical description of spin laddersPhysical Review B, 1995
- Coexistence of Dimerization and Antiferromagnetism in Si-Doped CuGeO 3Europhysics Letters, 1995
- Muon-spin-rotation study of the effect of Zn substitution on magnetism inPhysical Review B, 1994
- Observation of the spin-Peierls transition in linear(spin-1/2) chains in an inorganic compoundPhysical Review Letters, 1993
- Nonlinear Field Theory of Large-Spin Heisenberg Antiferromagnets: Semiclassically Quantized Solitons of the One-Dimensional Easy-Axis Néel StatePhysical Review Letters, 1983