paper

Fermi liquid breakdown and evidence for superconductivity in YFe $_{2}$ Ge $_{2}$

arXiv:1311.0247 · doi:10.1002/pssr.201409418

Abstract

In the d-electron system YFe $_{2}$ Ge $_{2}$ , an unusually high and temperature dependent Sommerfeld ratio of the specific heat capacity $C / T \sim 100 mJ/ (mol K^{2})$ and an anomalous power law temperature dependence of the electrical resistivity $I ¨ ≃ I ¨ _{0} + A T^{3/2}$ signal Fermi liquid breakdown, probably connected to a close-by quantum critical point. Full resistive transitions, accompanied by DC diamagnetic screening fractions of up to 80\% suggest that pure samples of YFe $_{2}$ Ge $_{2}$ superconduct below $1.8 K$ .

4 pages, 3 figures, published in Phys. Status Solidi RRL

Fermi liquid breakdown and evidence for superconductivity in YFe2​Ge2​

Abstract

Fermi liquid breakdown and evidence for superconductivity in YFe $_{2}$ Ge $_{2}$