Low-energy magnetic response of the noncentrosymmetric heavy-fermion superconductor CePt(3)Si studied via inelastic neutron scattering

Article

关键词: UPD2AL3;    EXCITATIONS;    CECU2SI2;    FLUCTUATIONS;    ORDER;   

DOI  :  10.1103/PhysRevB.78.184518

来源: SCIE

【 摘 要 】

The low-energy magnetic excitations of the noncentrosymmetric heavy-fermion superconductor CePt(3)Si have been measured with inelastic neutron scattering on a single crystal. Kondo-type spin fluctuations with an anisotropic wave-vector dependence are observed in the paramagnetic state. These fluctuations do not survive in the antiferromagnetically ordered state below T(N)=2.2 K but are replaced by damped spin waves, whose dispersion is much stronger along the c axis than in other directions. No change is observed in the excitation spectrum or the magnetic order as the system enters the superconducting state below T(c) approximate to 0.7 K.

【 授权许可】

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