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56 papers
Kondo coherence versus superradiance in THz radiation-driven heavy-fermion systems
Chia-Jung Yang, Michael Woerner, Oliver Stockert +4
In strongly correlated systems such as heavy-fermion materials, the coherent superposition of localized and mobile spin states leads to the formation of Kondo resonant states, whic…
Terahertz Conductivity of Heavy-fermion Systems from Time-resolved Spectroscopy
Chia-Jung Yang, Shovon Pal, Farzaneh Zamani +6
The Drude model describes the free-electron conduction in simple metals, governed by the freedom that the mobile electrons have within the material. In strongly correlated systems,…
Evolution of the partially frustrated magnetic order in CePdNiAl
Zita Huesges, Stefan Lucas, Sarah Wunderlich +8
We report on a single-crystal neutron diffraction study of the evolution of the antiferromagnetic order in the heavy-fermion compound CePdNiAl which exhibits partial ge…
Entropy evolution in the magnetic phases of partially frustrated CePdAl
Stefan Lucas, Kai Grube, Chien-Lung Huang +8
In the heavy-fermion metal CePdAl long-range antiferromagnetic order coexists with geometric frustration of one third of the Ce moments. At low temperatures the Kondo effect tends…
Signature of f-electron conductance in -Ce single-atom contacts
Sebastian Kuntz, Oliver Berg, Christoph Sürgers +1
Cerium is a fascinating element exhibiting, with its different phases, long-range magnetic order and superconductivity in bulk form. The coupling of the 4f electron to sd conductio…
Switching of a large anomalous Hall effect between metamagnetic phases of a non-collinear antiferromagnet
Christoph Sürgers, Thomas Wolf, Peter Adelmann +3
The anomalous Hall effect (AHE), which in long-range ordered ferromagnets appears as a voltage transverse to the current and usually is proportional to the magnetization, often is…