158 citations · 681 across the 18 of their papers we have counts for
18 papers
Low-Temperature Thermal Conductivity of CeRhAs
Seita Onishi, Ulrike Stockert, Seunghyun Khim +3
CeRhAs is a rare unconventional superconductor ( K) characterized by two adjacent superconducting phases for a magnetic field -axis of the tetragon…
Field-induced transition from even to odd parity superconductivity in CeRhAs
S. Khim, J. F. Landaeta, J. Banda +11
We report the discovery of two-phase unconventional superconductivity in CeRhAs. Using thermodynamic probes, we establish that the superconducting critical field of its hig…
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.…
Dependence of transport coefficients of Yb(RhCo)Si intermetallics on temperature and cobalt concentration
V. Zlatić, U. Stockert
Dependence of transport coefficients of the Yb(RhCo)Si series of alloys on temperature and cobalt concentration is explained by an asymmetric Anderson model whi…
Thermopower evolution in Yb(RhCo)Si
U. Stockert, C. Klingner, C. Krellner +3
We present thermopower measurements on Yb(RhCo)Si. Upon Co substitution the Kondo temperature is decreasing and the single large thermopower minimum observed fo…
Interplay between unconventional superconductivity and heavy-fermion quantum criticality: CeCuSi versus YbRhSi
M. Smidman, O. Stockert, J. Arndt +25
In this paper the low-temperature properties of two isostructural canonical heavy-fermion compounds are contrasted with regards to the interplay between antiferromagnetic (AF) quan…
Thermopower and thermal conductivity in the Weyl semimetal NbP
U. Stockert, R. D. dos Reis, M. O. Ajeesh +7
The Weyl semimetal NbP exhibits an extremely large magnetoresistance (MR) and an ultra-high mobility. The large MR originates from a combination of the nearly perfect compensation…
Superconducting gap structure of the skutterudite LaPt4Ge12 probed by specific heat and thermal transport
Heike Pfau, Michael Nicklas, Ulrike Stockert +5
We investigated the superconducting order parameter of the filled skutterudite LaPt4Ge12, with a transition temperature of Tc = 8.3 K. To this end, we performed temperature and mag…
Giant isotropic Nernst effect in an anisotropic Kondo semimetal
Ulrike Stockert, Peije Sun, Niels Oeschler +4
The "failed Kondo insulator" CeNiSn has long been suspected to be a nodal metal, with a node in the hybridization matrix elements. Here we carry out a series of Nernst effect exper…
Evidence for a Kondo destroying quantum critical point in YbRh2Si2
Frank Steglich, Heike Pfau, Stefan Lausberg +10
The heavy-fermion metal YbRhSi is a weak antiferromagnet below K. Application of a low magnetic field T () is sufficient to conti…
Thermal and Electrical Transport across a Magnetic Quantum Critical Point
H. Pfau, S. Hartmann, U. Stockert +11
A quantum critical point (QCP) arises at a continuous transition between competing phases at zero temperature. Collective excitations at magnetic QCPs give rise to metallic propert…
Interplay between Kondo suppression and Lifshitz transitions in YbRhSi at high magnetic fields
H. Pfau, R. Daou, S. Lausberg +11
We investigate the magnetic field dependent thermopower, thermal conductivity, resistivity and Hall effect in the heavy fermion metal YbRh2Si2. In contrast to reports on thermodyna…
Pr magnetism and its interplay with the Fe spin density wave in PrFeAsO
U. Stockert, N. Leps, L. Wang +4
We have studied the magnetism of the Pr3+ ions in PrFeAsO_1-xF_x (x = 0; 0.15) and its interaction with the Fe magnetic order (for x = 0). Specific heat data confirm the presence o…
Single-ion Kondo Scaling of the Coherent Fermi Liquid Regime in Ce1-xLaxNi2Ge2
Adam P. Pikul, Ulrike Stockert, Alexander Steppke +7
Thermodynamic and transport properties of the La-diluted Kondo lattice CeNi2Ge2 were studied in a wide temperature range. The Ce-rich alloys Ce1-xLaxNi2Ge2 were found to exhibit di…
Calorimetric study of the superconducting and normal state properties of Ca(Fe1-xCox)2As2
M. Abdel-Hafiez, L. Harnagea, S. Singh +5
We present a calorimetric study on single crystals of Ca(Fe1-xCox)2As2 (x = 0, 0.032, 0.051, 0.056, 0.063, and 0.146). The combined first order spin-density wave/structural transit…
The superconducting gaps in LiFeAs: Joint study of specific heat and ARPES
U. Stockert, M. Abdel-Hafiez, D. V. Evtushinsky +7
We present specific heat, c_P, and ARPES data on single crystals of the stoichiometric superconductor LiFeAs. A pronounced anomaly is found in c_P at the superconducting transition…
Weak superconducting pairing and a single isotropic energy gap in stoichiometric LiFeAs
D. S. Inosov, J. S. White, D. V. Evtushinsky +15
We report superconducting (SC) properties of stoichiometric LiFeAs (Tc = 17 K) studied by small-angle neutron scattering (SANS) and angle-resolved photoemission (ARPES). Although t…
Local antiferromagnetic correlations in the iron pnictide superconductors LaFeAsO{1-x}F{x} and Ca(Fe,Co)2As2 as seen via normal-state susceptibility
R. Klingeler, N. Leps, I. Hellmann +11
We have studied the interplay of magnetism and superconductivity in LaFeAsOF and Ca(FeCo)As. While antiferromagnetic spin density wave formation is…