Dynamics of Composite Haldane Spin Chains in
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- 2 February 2006
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 96 (4) , 047210
- https://doi.org/10.1103/physrevlett.96.047210
Abstract
Magnetic excitations in the quasi-one-dimensional antiferromagnet IPA- are studied by cold neutron inelastic scattering. Strongly dispersive gap excitations are observed. Contrary to previously proposed models, the system is best described as an asymmetric quantum spin ladder. The observed spectrum is interpreted in terms of composite Haldane spin chains. The key difference from actual chains is a sharp cutoff of the single-magnon spectrum at a certain critical wave vector.
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This publication has 20 references indexed in Scilit:
- Quantum magnetic excitations from stripes in copper oxide superconductorsNature, 2004
- Continuum dynamics of the 1-D Heisenberg antiferromagnet: Identification with the O(3) nonlinear sigma modelPublished by Elsevier ,2002
- Quasielastic Neutron Scattering in the High-Field Phase of a Haldane AntiferromagnetPhysical Review Letters, 2002
- Haldane-gap excitations in the low- one-dimensional quantum antiferromagnetPhysical Review B, 2001
- Magnetic excitations from the singlet ground state in the S=1/2 quasi-one-dimensional systemPhysical Review B, 1996
- Superconductivity in the Ladder Material Sr0.4Ca13.6Cu24O41.84Journal of the Physics Society Japan, 1996
- Equivalence of the antiferromagnetic Heisenberg ladder to a singleS=1 chainPhysical Review B, 1996
- Observation of a Spin Gap in SrComprising Spin-½ Quasi-1D Two-Leg LaddersPhysical Review Letters, 1994
- Inelastic-neutron-scattering study of the spin dynamics in the Haldane-gap system Ni(Physical Review B, 1994
- Nonlinear Field Theory of Large-Spin Heisenberg Antiferromagnets: Semiclassically Quantized Solitons of the One-Dimensional Easy-Axis Néel StatePhysical Review Letters, 1983