Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2010-09-22
Physics
Condensed Matter
Strongly Correlated Electrons
5 pages, 4 figures. to be published in Journal of the Physical Society of Japan Vol. 79 (2010) No. 12
Scientific paper
We report the temperature- and magnetic-field-dependent optical conductivity spectra of the heavy electron metal YbIr$_2$Si$_2$. Upon cooling below the Kondo temperature ($T_{\rm K}$), we observed a typical charge dynamics that is expected for a formation of a coherent heavy quasiparticle state. We obtained a good fitting of the Drude weight of the heavy quasiparticles by applying a modified Drude formula with a photon energy dependence of the quasiparticle scattering rate that shows a similar power-law behavior as the temperature dependence of the electrical resistivity. By applying a magnetic field of 6T below $T_{\rm K}$, we found a weakening of the effective dynamical mass enhancement by about 12% in agreement with the expected decrease of the $4f$-conduction electron hybridization on magnetic field.
Geibel Ch.
Herzog Adrian
Iizuka Takeshi
Kimura Sachie
Krellner Cornelius
No associations
LandOfFree
Temperature- and Magnetic-Field-Dependent Optical Properties of Heavy Quasiparticles in YbIr2Si2 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Temperature- and Magnetic-Field-Dependent Optical Properties of Heavy Quasiparticles in YbIr2Si2, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Temperature- and Magnetic-Field-Dependent Optical Properties of Heavy Quasiparticles in YbIr2Si2 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-637648