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Temperature- and Magnetic-Field-Dependent Optical Properties of Heavy Quasiparticles in YbIr2Si2
T. Iizuka, S. Kimura, A. Herzog +4
We report the temperature- and magnetic-field-dependent optical conductivity spectra of the heavy electron metal YbIrSi. Upon cooling below the Kondo temperature ($T_{\rm K…
Electron Spin Resonance of the ferromagnetic Kondo lattice CeRuPO
T. Förster, J. Sichelschmidt, C. Krellner +2
The spin dynamics of the ferromagnetic Kondo lattice CeRuPO is investigated by Electron Spin Resonance (ESR) at microwave frequencies of 1, 9.4, and 34~GHz. The measured resonance…
Anisotropic electron spin resonance of YbIr2Si2
T. Gruner, J. Wykhoff, J. Sichelschmidt +3
A series of electron spin resonance (ESR) experiments were performed on a single crystal of the heavy fermion metal YbIr2Si2 to map out the anisotropy of the ESR-intensity I_ESR wh…
Effect of chemical substitution and pressure on YbRh2Si2
M. Nicklas, M. E. Macovei, J. Ferstl +3
We carried out electrical resistivity experiments on (Yb,La)Rh2Si2 and on Yb(Rh,Ir)2Si2 under pressure and in magnetic fields. YbRh2Si2 exhibits a weak antiferromagnetic transition…
Scanning Tunneling Microscopy studies on CeCoIn and CeIrIn
S. Ernst, S. Wirth, F. Steglich +3
High--quality single crystals of the heavy fermion superconductors CeCoIn and CeIrIn have been studied by means of low--temperature Scanning Tunneling Microscopy. Methods w…