Energy Scales in the Local Magnetic Excitation Spectrum of YBCO
| dc.creator | Brinckmann, Jan | |
| dc.creator | Lee, Patrick A. | |
| dc.date | 2001-10-16 | |
| dc.date.accessioned | 2026-07-07T02:43:10Z | |
| dc.date.available | 2026-07-07T02:43:10Z | |
| dc.description | The wave-vector integrated dynamical spin susceptibility chi_{2D}(omega) of YBCO cuprates is considered. chi_{2D} is calculated in the superconducting state from a renormalized mean-field theory of the t-t'-J-model, based on the slave-boson formulation. Besides the well-known 41 meV resonance a second, much broader peak (`hump') appears in Im chi_{2D}. It is caused by particle-hole excitations across the maximum gap Delta^0. In contrast to the resonance, which moves to lower energies when the hole filling is reduced from optimal doping, the position of this `hump' at approx. 2 Delta^0 stays almost unchanged. The results are in reasonable agreement with inelastic neutron-scattering experiments. | |
| dc.description | 8pp including figures. To appear in the Festschrift on the occasion of P. Woelfle's 60th birthday, to be published in J. Low Temp. Physics | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0110316 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0110316 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/18390 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.subject | Superconductivity | |
| dc.title | Energy Scales in the Local Magnetic Excitation Spectrum of YBCO | |
| dc.type | text |