Specific heat and electrical resistivity at magnetic fields in antiferromagnetic heavy fermion CeAl2

International Conference on Strongly Correlated Electron Systems 2016

Ebihara, T.^1 ; Tsuchiya, M.^1 ; Saitoh, Y.^1 ; Jatmika, J.^1 ; Tsujimoto, M.^2 ; Shimura, Y.^2 ; Matsumoto, Y.^2 ; Nakatsuji, S.^2

Department of Physics, Shizuoka University, Oya, Suruga Shizuoka

836, Japan^1

Institut for Solid State Physics, Kahsiwanoha, Kashiwa Chiba, Japan^2

关键词: Antiferromagnetics;    Heavy fermion;    Low temperatures;    Measured temperatures;    Metamagnetic transitions;    Sommerfeld coefficient;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/807/1/012011/pdf
DOI  :  10.1088/1742-6596/807/1/012011

来源: IOP

【 摘 要 】

We measured temperature dependence of electrical resistivity and the specific heat as a function of magnetic field up to 8 T in CeAl2. At the metamagnetic transition around 6 T, the coefficient A (ρ ∞ AT2) and Sommerfeld coefficient reduce by 25 %. Such non drastic reduction implies magnetically insensitive phonon could enhance the A and γ in CeAl2even in low temperature.