Electronic states of single crystalCeAl2near the pressure-induced quantum critical point

Kondo Effect in CeXc (Xc = S, Se, Te) Studied by Electrical Resistivity Measurements under High Pressure

“…5, [23][24][25][26][27][28] The peak at high temperature is generally interpreted as reflecting the CEF level splitting of the f state and the second peak at low temperature as the formation of a coherent Kondo state. When the system is near the boundary between the magnetic ordering regime and the Fermi liquid regime, the ρ mag (T ) generally exhibit a single peak at around the Kondo coherence temperature, and the peak shifts to high temperatures with increasing P without changing the peak height.…”

Thermal and Magnetic Properties in Ce1−xErxAl2 Intermetallic Compounds

“…8) Below T N , a pronounced jump in the magnetization has been observed at a magnetic field of approximately 5 T in a CeAl 2 single crystal. It indicates a metamagnetic phase transition from the antiferromagnetic ordering phase to the paramagnetic ordering phase.…”

“…An antiferromagnetic ordering due to a spin density wave occurs at T N = 3.8 K, [7][8][9] whereas Kondo-type conduction-electron screening of the localized moments occurs above T N , which is suppressed by applying pressure since T N is merged to the Kondo temperature T K . 8) Below T N , a pronounced jump in the magnetization has been observed at a magnetic field of approximately 5 T in a CeAl 2 single crystal.…”

Magnetic Phase Diagram of Ce1−xErxAl2 Intermetallic Compounds

“…Considerable attention has been focused on CeAl 2 as a system that shows the competition between these magnetic and nonmagnetic interactions. An antiferromagnetic ordering due to a spin density wave occurs at T N = 3.8 K [9][10][11], while Kondo-type conduction-electron screening of the localized moments occurs above T N , which is suppressed by applying pressure since T N is merged to the Kondo temperature T K [10]. Below T N , a pronounced jump in the magnetization has been observed at a magnetic field approximately 5 T in a CeAl 2 single crystal.…”