118 citations · 625 across the 20 of their papers we have counts for
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Towards a critical endpoint in the valence fluctuating Eu(RhCo)Si system
Franziska Walther, Michelle Ocker, Alexej Kraiker +4
We report on the successful single crystal growth of pure EuRhSi and of Eu(RhCo)Si with by the flux method. Through Co substitution, E…
Possible multi-orbital ground state in CeCuSi
Andrea Amorese, Andrea Marino, Martin Sundermann +16
The crystal-field ground state wave function of CeCuSi has been investigated with linear polarized -edge x-ray absorption spectroscopy from 250mK to 250K, thus covering…
Valence effect on the thermopower of Eu systems
Ulrike Stockert, Silvia Seiro, Nubia Caroca-Canales +2
We investigated the thermoelectric transport properties of EuNi2P2 and EuIr2Si2 in order to evaluate the relevance of Kondo interaction and valence fluctuations in these materials.…
Charge, lattice and magnetism across the valence crossover in EuIrSi single crystals
Silvia Seiro, Yurii Prots, Kurt Kummer +3
We present a detailed study of the temperature evolution of the crystal structure, specific heat, magnetic susceptibility and resistivity of single crystals of the paradigmatic val…
High-resolution resonant inelastic soft X-ray scattering as a probe of the crystal electrical field in lanthanides demonstrated for the case of CeRh2Si2
A. Amorese, N. Caroca-Canales, S. Seiro +6
The magnetic properties of rare earth compounds are usually well captured by assuming a fully localized f shell and only considering the Hund's rule ground state multiplet split by…
Evolution of the Kondo lattice and non-Fermi liquid excitations in a heavy-fermion metal
S. Seiro, L. Jiao, S. Kirchner +7
Strong electron correlations can give rise to extraordinary properties of metals with renormalized quasiparticles which are at the basis of Landau's Fermi liquid theory. Near a qua…
Surface and electronic structure of SmB through Scanning Tunneling Microscopy
S. Roessler, Lin Jiao, D. -J. Kim +6
SmB, a so called Kondo insulator, is recently discussed as a candidate material for a strong topological insulator. We present detailed atomically resolved topographic informat…
Superconducting gap and vortex lattice of the heavy fermion compound CeCu_2Si_2
Mostafa Enayat, Zhixiang Sun, Ana Maldonado +6
The order parameter and pairing mechanism for superconductivity in heavy fermion compounds are still poorly understood. Scanning tunneling microscopy and spectroscopy at ultra-low…
Strong ferromagnetism at the surface of an antiferromagnet caused by buried magnetic moments
Alla Chikina, Marc Höppner, Silvia Seiro +13
Carrying a large, pure spin magnetic moment of 7 bohr/atom in the half-filled 4f shell, divalent europium is an outstanding element for assembling novel magnetic devices in whic…
Interplay of Dirac fermions and heavy quasiparticles in solids
M. Höppner, S. Seiro, A. Chikina +14
Many-body interactions in crystalline solids can be conveniently described in terms of quasiparticles with strongly renormalized masses as compared to those of non-interacting part…
Optical study of archetypical valence-fluctuating Eu-systems
V. Guritanu, S. Seiro, J. Sichelschmidt +5
We have investigated the optical conductivity of the prominent valence fluctuating compounds EuIr2Si2 and EuNi2P2 in the infrared energy range to get new insights into the electron…
Determining the in-plane orientation of the ground-state orbital of CeCu2Si2
T. Willers, F. Strigari, N. Hiraoka +9
We have successfully determined the hitherto unknown sign of the B44 Stevens crystal-field parameter of the tetragonal heavy-fermion compound CeCu2Si2 using vector q dependent non-…
Fingerprint of dynamical charge/spin correlations in the tunneling spectra of colossal magnetoresistive manganites
S. Seiro, Y. Fasano, I. Maggio-Aprile +3
We present temperature-dependent scanning tunneling spectroscopy measurements on () films with different degrees of biaxial strain. A depletion in…