Spin Dynamics in Iron-based Layered Superconductor (La_{0.87}Ca_{0.13})FePO Revealed by ^{31}P and ^{139}La NMR Studies
| dc.creator | Nakai, Yusuke | |
| dc.creator | Ishida, Kenji | |
| dc.creator | Kamihara, Yoichi | |
| dc.creator | Hirano, Masahiro | |
| dc.creator | Hosono, Hideo | |
| dc.date | 2008-08-17 | |
| dc.date.accessioned | 2026-07-07T09:57:04Z | |
| dc.date.available | 2026-07-07T09:57:04Z | |
| dc.description | We report ^{31}P and ^{139}La NMR studies of (La_{0.87}Ca_{0.13})FePO, which is a family member of the recently discovered superconductor LaFeAs(O_{1-x}F_x). In the normal state, Knight shift and $1/T_1T$ show that a Fermi-liquid state with moderate ferromagnetic fluctuations emerges below 30K. From 1/T_1T of ^{31}P and ^{139}La, quasi-two dimensional electronic structure is suggested, in which the FeP layer is more conductive than the LaO layer. In the superconducting (SC) state, although a clear Meissner signal was observed, 1/T_1T increases below T_c, in contrast to a decrease of 1/T_1T due to the opening of a SC gap, suggesting that novel low-energy spin dynamics develop in the SC state. | |
| dc.description | Phys. Rev. Lett. 101, 077006 (2008) | |
| dc.identifier | https://arxiv.org/abs/0808.2293 | |
| dc.identifier | http://arxiv.org/abs/0808.2293 | |
| dc.identifier | doi:10.1103/PhysRevLett.101.077006 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/167211 | |
| dc.subject | Superconductivity | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Spin Dynamics in Iron-based Layered Superconductor (La_{0.87}Ca_{0.13})FePO Revealed by ^{31}P and ^{139}La NMR Studies | |
| dc.type | text |