Coldea, R;
Hayden, SM;
Aepplli, G;
Perring, TG;
Frost, CD;
Mason, TE;
Cheong, SW;
(2001)
Spin waves and electronic interactions in La2CuO4.
Physical Review Letters
, 86
(23)
5377 - 5380.
10.1103/PhysRevLett.86.5377.
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Abstract
The magnetic excitations of the square-lattice spin-1/2 antiferromagnet and high- Tc parent compound La2CuO4 are determined using high-resolution inelastic neutron scattering. Sharp spin waves with absolute intensities in agreement with theory including quantum corrections are found throughout the Brillouin zone. The observed dispersion relation shows evidence for substantial interactions beyond the nearest-neighbor Heisenberg term which can be understood in terms of a cyclic or ring exchange due to the strong hybridization path around the Cu4O4 square plaquettes.
| Type: | Article |
|---|---|
| Title: | Spin waves and electronic interactions in La2CuO4 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.86.5377 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.86.5377 |
| Language: | English |
| Additional information: | © 2001 The American Physical Society |
| Keywords: | Condensed Matter and Materials Physics, interaction, Spin waves, spin-waves, waves |
| UCL classification: | UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
| URI: | https://discovery.ucl.ac.uk/id/eprint/188126 |
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