Magnetic excitations and structural change in the quasi-one-dimensional magnet
- 1 December 1997
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 56 (22) , 14499-14504
- https://doi.org/10.1103/physrevb.56.14499
Abstract
Neutron-scattering measurements have been performed on the quasi-one-dimensional system which has both simple chains and two-leg ladders of copper ions. We observed that when a small amount of yttrium is substituted for strontium, which is expected to reduce the number of holes, the dimerized state and the structure in the chain are changed drastically. The inelastic peaks originating from the dimerized state of the chain become broader in energy but not in momentum space. This implies that the dimerized state becomes unstable but the spin correlations are unchanged with yttrium substitution. Furthermore, it was observed that nuclear-Bragg-peak intensities originating from the chain show strong temperature and dependence, which suggests that the chains slide along the axis as temperature and are varied.
Keywords
All Related Versions
This publication has 13 references indexed in Scilit:
- NMR Study of Carrier Doping Effects on Spin Gaps in the Spin Ladder, Y, and La)Physical Review Letters, 1997
- Superconductivity in the Ladder Material Sr0.4Ca13.6Cu24O41.84Journal of the Physics Society Japan, 1996
- Hole Doping of the Cu Chains in (La,Sr,CaCPhysical Review Letters, 1996
- Metal-insulator transition and spin gap in the ladder system Sr14−xAxCu24O41 (A Ba and Ca)Physica C: Superconductivity and its Applications, 1996
- Surprises on the Way from One- to Two-Dimensional Quantum Magnets: The Ladder MaterialsScience, 1996
- Pressure-induced critical behavior ofclose to=3.1 GPa: X-ray diffraction resultsPhysical Review B, 1996
- Observation of a Spin Gap in SrComprising Spin-½ Quasi-1D Two-Leg LaddersPhysical Review Letters, 1994
- Superconductivity, Spin Gaps and Luttinger Liquids in a Class of CupratesEurophysics Letters, 1993
- A new layered cuprate structure-type, (A1−xA′x)14Cu24O41Materials Research Bulletin, 1988
- The incommensurate structure of (Sr14−xCax)Cu24O41 (0 < x ∼ 8) a superconductor byproductMaterials Research Bulletin, 1988