Magnetotransport of CeRhIn5

Abstract

We report measurements of the temperature-dependent anisotropic resistivity and in-plane magnetoresistance on single crystals of the tetragonal heavy-fermion antiferromagnet (TN = 3.8 K) CeRhIn5. The measurements are reported in the temperature range 1.4 K to 300 K and in magnetic fields to 18 tesla. The resistivity is moderately anisotropic, with a room-temperature c-axis to in-plane resistivity ratio rho_c/rho_a(300 K) = 1.7. rho(T) measurements on the non-magnetic analog LaRhIn5 indicate that the anisotropy in the CeRhIn5 resistivity stems predominately from anisotropy in Kondo-derived magnetic scattering. In the magnetically ordered regime an applied field H reduces TN only slightly due to the small ordered moment (0.37mu_B) and magnetic anisotropy. The magnetoresistance (MR) below TN is positive and varies linearly with H. In the paramagnetic state a positive MR is present below 7.5 K, while a high-field negative contribution is evident at higher temperatures. The positive contribution decreases in magnitude with increasing temperature. Above 40 K the positive contribution is no longer observable, and the MR is negative. The low-T positive MR results from interactions with the Kondo-coherent state, while the high-T negative MR stems from single-impurity effects. The H and T-dependent magnetotransport reflects the magnetic anisotropy and Kondo interactions at play in CeRhIn5.

submitted to Physical Review B

References in corpus (6)

• A New Heavy-Fermion Superconductor CeIrIn5: Relative of the Cuprates?
• Superconductivity and Magnetism in a New Class of Heavy-Fermion Materials
• Pressure-induced anomalous magnetism and unconventional superconductivity in CeRhIn5 : 115In-NQR Study under Pressure
• Field-induced magnetic transitions in the quasi-two-dimensional heavy-fermion antiferromagnets Ce_{n}RhIn_{3n+2} (n=1 or 2)
• Anisotropic three-dimentional magnetic fluctuations in heavy fermion CeRhIn5
• Localized f electrons in CexLa1-xRhIn5: dHvA Measurements

Cited by in corpus (16)

• Field-Induced Quantum Critical Point in CeCoIn5
• Electronic in-plane symmetry breaking at field-tuned quantum criticality in CeRhIn5
• Low Frequency Spin Dynamics in the CeMIn_5 Materials
• Field induced density wave in the heavy fermion compound CeRhIn5
• Anomalous f-electron Hall Effect in the Heavy-Fermion System CeTIn${}_5$ (T = Co, Ir, or Rh)
• c-axis magnetotransport in CeCoIn${}_5$
• Spontaneous breaking of time reversal symmetry in strongly interacting two dimensional electron layers in silicon and germanium
• From mixed valence to the Kondo lattice regime
• High magnetic field thermal-expansion and elastic properties of CeRhIn${}_5$
• Unusual giant magnetostriction in the ferrimagnet Gd${}_{2/3}$Ca${}_{1/3}$MnO${}_3$
• Coincidence of magnetic and valence quantum critical points in CeRhIn5 under pressure
• Abnormal planar Hall effect and disentanglement of incoherent and coherent transport in a Kondo lattice
• Anisotropic excitonic magnetism from discrete ${\mathrm{C}}_4$ symmetry in CeRhIn${}_5$
• Pressure dependence of Ce valence in CeRhIn5
• Non-Fermi liquid behavior in La${}_3$Ni${}_2$O${}_7$ thin films under hydrostatic pressure
• Synthesis and physical properties of Ce${}_2$Rh${}_{3+\delta }$Sb${}_4$ single crystals