High-temperature electronic and thermal properties of icosahedral quasicrystals |
| |
Authors: | MA Chernikov EI Isaev |
| |
Institution: | a Russian Research Center “Kurchatov Institute”, 123182 Moscow, Russia b Moscow State Institute of Steel and Alloys, 119049 Moscow, Russia |
| |
Abstract: | We discuss the high-temperature electronic and thermal properties of an icosahedral quasicrystal within the framework of the fractional multicomponent Fermi-surface model. When intervalley electron-phonon scattering sets in above a characteristic temperature T∗ of the order of the Debye temperature ΘD the quasicrystal becomes more “metallic”. In this regime the electrical conductivity and the electronic contribution to the thermal conductivity vary as T and T2, respectively. We predict that at elevated temperatures the electronic specific heat will vary faster than γT and the low-frequency Drude-type component of the optical conductivity σ1(ω) will gain weight. |
| |
Keywords: | 61 44 Br 71 23 Ft 72 15 -v |
本文献已被 ScienceDirect 等数据库收录! |