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Linear spin wave theory for single-Q incommensurate magnetic structures.
  • S. Tóth, B. Lake
  • Physics
    Journal of physics. Condensed matter : an…
  • 25 February 2014
This work proposes an algorithm that allows magnetic ground states with general moment directions and single-Q incommensurate ordering wave vector and shows how this model can determine the spin wave spectrum of the magnetic C-site langasites with incommonsurate order.
Antiferromagnetic order induced by an applied magnetic field in a high-temperature superconductor
It is reported that for one high-Tc superconductor, the applied field that imposes the vortex lattice also induces ‘striped’ antiferromagnetic order, observed in the measurements.
Physical realization of a quantum spin liquid based on a complex frustration mechanism
A detailed and systematic study of Ca10Cr7O28 reveals all the hallmarks of spin-liquid behaviour, in spite of the compound’s unusually complex structure.
Quantum criticality and universal scaling of a quantum antiferromagnet
By using inelastic neutron scattering, a complete data set of the magnetic correlations of KCuF3 are collected as a function of momentum, energy and temperature and the LL description is found to be valid over an extensive range of these parameters.
Two energy scales in the spin excitations of the high-temperature superconductor La 2−x Sr x CuO 4
The excitations responsible for producing high-temperature superconductivity in the copper oxides have yet to be identified. Two promising candidates are collective spin excitations and phonons(1). A
Patterning of sodium ions and the control of electrons in sodium cobaltate
The results provide a good starting point to understand the electronic properties in terms of a Hubbard hamiltonian that takes into account the electrostatic potential from the Na superstructures.
Quantum-spin-liquid states in the two-dimensional kagome antiferromagnets ZnxCu4-x(OD)6Cl2.
It is found that in Cu(4)(OD)(6)Cl(2), where distorted kagome planes are weakly coupled, a dispersionless excitation mode appears in the magnetic excitation spectrum below approximately 20 K, whose characteristics resemble those of quantum spin singlets in a solid state, known as a valence-bond solid that breaks translational symmetry.
Multispinon continua at zero and finite temperature in a near-ideal Heisenberg chain.
A comparison between neutron scattering measurements on the one-dimensional spin-1/2 Heisenberg antiferromagnet KCuF3, and recent state-of-the-art theoretical methods based on integrability and density matrix renormalization group simulations shows that precise descriptions of strongly correlated states at all distance, time, and temperature scales are now possible.
Spins in the Vortices of a High-Temperature Superconductor
It is found that the vortex state can be regarded as an inhomogeneous mixture of a superconducting spin fluid and a material containing a nearly ordered antiferromagnet.
Spinon confinement in a quasi-one-dimensional anisotropic Heisenberg magnet
Confinement is a process by which particles with fractional quantum numbers bind together to form quasiparticles with integer quantum numbers. The constituent particles are confined by an attractive