93 citations · 482 across the 18 of their papers we have counts for
18 papers
Multidimensional entropy landscape of quantum criticality
K. Grube, S. Zaum, O. Stockert +2
The Third Law of Thermodynamics states that the entropy of any system in equilibrium has to vanish at absolute zero temperature. At nonzero temperatures, on the other hand, matter…
Emergent XY electronic nematicity in iron-based superconductors
K. Ishida, M. Tsujii, S. Hosoi +9
Electronic nematicity, a correlated state that spontaneously breaks rotational symmetry, is observed in several layered quantum materials. In contrast to their liquid-crystal count…
CePdAl - a Kondo lattice with partial frustration
Veronika Fritsch, Stefan Lucas, Zita Huesges +10
Magnetic frustration, which is well-defined in insulating systems with localized magnetic moments, yields exotic ground states like spin ices, spin glasses, or spin liquids. In met…
Antiferromagnetic Phases of the Kondo Lattice
R. Eder, K. Grube, P. Wrobel
We discuss the paramagnetic and Neel-ordered phases of the Kondo lattice Hamiltonian on the 2D square lattice by means of bond Fermions. In the doped case we find two antiferromagn…
Evolution of quasiparticle excitations with critical mass enhancement in superconducting AFe2As2 (A = K, Rb, and Cs)
Y. Mizukami, Y. Kawamoto, Y. Shimoyama +8
In the heavily hole-doped iron-based superconductors FeAs ( K, Rb, and Cs), the electron effective mass increases rapidly with alkali-ion radius. To study how the ma…
Quantum criticality in AFe2As2 with A = K, Rb, and Cs suppresses superconductivity
Felix Eilers, Kai Grube, Diego A. Zocco +10
Superconductors close to quantum phase transitions often exhibit a simultaneous increase of electronic correlations and superconducting transition temperatures. Typical examples ar…