Point contact spectroscopy and temperature dependence of resistivity of metallic sodium tungsten bronzes -Role of optical phonons
| dc.creator | Gayathri, N. | |
| dc.creator | Raychaudhuri, A. K. | |
| dc.date | 1998-09-29 | |
| dc.date.accessioned | 2026-07-07T03:11:36Z | |
| dc.date.available | 2026-07-07T03:11:36Z | |
| dc.description | In this paper we report the results of electrical resistivity (1.5K < T <300K) and point contact spectroscopy (PCS) measurements on single crystals of metallic sodium tungsten bronze with varying sodium content. We have shown that the electron-phonon coupling function as measured through PCS can explain quantitatively the large temperature dependence of resistivity $ρ$ seen in these materials over the entire temperature range. The electron-phonon coupling function shows predominatly large peaks for phonon frequency range of 30meV < $ω$ 100meV which match well with the calculated optical phonon modes for WO$_6$ octahedra. The integrated electron-phonon coupling constant $λ$ from this data is $\approx$ 0.25-0.45. | |
| dc.description | RevTEX format with 8 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/9809393 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/9809393 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/28634 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.subject | Disordered Systems and Neural Networks | |
| dc.title | Point contact spectroscopy and temperature dependence of resistivity of metallic sodium tungsten bronzes -Role of optical phonons | |
| dc.type | text |