Quantum Monte Carlo Study of the Degenerate Anderson Model with Cubic Crystal Field

スポンサーリンク

概要

• 論文の詳細を見る

• Using a quantum Monte Carlo simulation technique, we study magnetic properties of the 6-fold degenerate Anderson model, which corresponds to the angular momentum j= 5/2. The model is characterized by the f-f Coulomb interaction U, the hybridization width Γ, and the f-electron energy level E_f. As U increases, the Kondo temperature T_K decreases for the electron-hole symmetric case (E_f〜 -5U/2), although T_K increases for the shallow E_f case (E_f〜0). We also study an effect of cubic crystal field splitting Δ_c on the susceptibility and the Kondo temperature, and find a suppression of susceptibility and an increase of T_K when the occupied f-electron number is nearly equal to one. In processes of Monte Carlo simulations, the negative sign problem does not appear.

• 社団法人日本物理学会の論文
• 1993-05-15

著者

• Takegahara Katsuhiko

  Education Center For Information Processing Tohoku University

関連論文

• Electronic Band Structures of Ce_3Pt_3Sb_4 and Ce_3Pt_3Bi_4
• Quantum Monte Carlo Study of the Degenerate Anderson Model with Cubic Crystal Field

スポンサーリンク