Effect of Rattling Phonons on Sommerfeld Constant(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
スポンサーリンク
概要
- 論文の詳細を見る
By employing a numerical renormalization group technique, we evaluate electronic specific heat coefficient γ of the Anderson model coupled with local anharmonic phonons for the oscillation of caged atom. For the rattling-type cage potential with a flat and wide region in the bottom, we find that phonon-mediated attraction is largely enhanced. When the potential shape is deformed from the rattling type, there occurs a cancellation between Coulomb repulsion and the phonon-mediated attraction. In such a situation, spin and charge fluctuations are comparable to each other, leading to the realization of exotic electron-phonon complex state with large and magnetically robust γ.
- 社団法人日本物理学会の論文
- 2008-10-15
著者
-
Hotta Takashi
Department Of Physics Tokyo Metropolitan University
-
Hotta Takashi
Department Of Neurological Surgery Sapporo Medical College And Hospital
関連論文
- High- T_c Superconductivity on the Basis of d-p Model
- B-86. The Study of Arteriovenous Malformations of the Posterior Fossa
- Effect of Rattling Phonons on Sommerfeld Constant(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- Inverse Isotope Effect on Kondo Temperature in Electron-Rattling System
- Transition Temperatures in Cuprate Superconductors on the Basis of d-p Model
- Impurity Effects in Cuprate Superconductors
- Origin of Superconductivity in Cuprate Oxide : Quantitative Analysis on the Basis of d-p Model
- Field-Induced Multipole States of Sm-Based Filled Skutterudites(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- Strong-Coupling Theory of Rattling-Induced Superconductivity
- Quadrupole Susceptibility of Gd-Based Filled Skutterudite Compounds
- Anomalous Isotope Effect in Rattling-Induced Superconductor
- Heavy-Electron Formation and Polaron--Bipolaron Transition in the Anharmonic Holstein Model
- Construction of a Microscopic Model for Yb and Tm Compounds on the Basis of a $\mathbf{ j}$–$\mathbf{ j}$ Coupling Scheme