4 papers
Antiferromagnetic vortex state in a high-temperature superconductor
B. Lake, H. M. Ronnow, N. B. Christensen +10
There is strong evidence that magnetic interactions play a crucial role in the mechanism driving high-temperature superconductivity in cuprate superconductors. To investigate this…
Spin dynamics of the model 2D quantum antiferromagnet CFTD
H. M. Ronnow, D. F. McMorrow, R. Coldea +7
The magnetic excitation spectrum in the two-dimensional (2D) S=1/2 Heisenberg antiferromagnet copper deuteroformate tetradeuterate (CFTD) has been measured for temperatures up to T…
The magnetic neutron scattering resonance of high-T_c superconductors in external magnetic fields: an SO(5) study
Niels Asger Mortensen, H. M. Ronnow, Henrik Bruus +1
The magnetic resonance at 41 meV observed in neutron scattering studies of Y Ba_2 Cu_3 O_7 holds a key position in the understanding of high-T_c superconductivity. Within the SO(5)…
Cross-over from renormalized classical to quantum critical behaviour of a two dimensional magnet
H. M. Ronnow
This paper has been withdrawn by the author due to an error in the data-analysis.