Spinwaves and large electron-phonon coupling near the metal-insulator transition in hole-doped high-T$_C$ oxides
| dc.creator | Jarlborg, T. | |
| dc.date | 2001-02-20 | |
| dc.date.accessioned | 2026-07-07T02:40:26Z | |
| dc.date.available | 2026-07-07T02:40:26Z | |
| dc.description | A theory for spin and lattice couplings to the electronic states in high-T$_C$ oxides is presented, with HgBa$_2$CuO$_4$ as an example. A simple analytical model suggests that the barrel band is sensitive to potential perturbations with long-range Fourier components, and that gaps can be opened at the Fermi energy. This is confirmed in self-consistent band calculations for modulations in elongated supercells, where spin waves and phonon coupling compete for equal q-vectors. It is argued that the wavelengths of spin-wave modulations and of the phonon modes with large coupling, depend on the doping. This mechanism supports the idea that pseudogaps are caused by stripe like spin-modulations in underdoped systems, while superconductivity is attributed to enhanced electron-phonon coupling for long wavelength phonons. | |
| dc.description | (3 figures) | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0102343 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0102343 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/17382 | |
| dc.subject | Superconductivity | |
| dc.subject | Materials Science | |
| dc.title | Spinwaves and large electron-phonon coupling near the metal-insulator transition in hole-doped high-T$_C$ oxides | |
| dc.type | text |