57 citations · 226 across the 6 of their papers we have counts for
6 papers
Full-gap superconductivity robust against disorder in heavy-fermion CeCu2Si2
T. Takenaka, Y. Mizukami, J. A. Wilcox +9
A key aspect of unconventional pairing by the antiferromagnetic spin-fluctuation mechanism is that the superconducting energy gap must have opposite sign on different parts of the…
Spin liquid close to a quantum critical point in NaIrO
Yogesh Singh, Y. Tokiwa, J. Dong +1
NaIrO is a candidate material for a 3-dimensional quantum spin-liquid on the hyperkagome lattice. We present thermodynamic measurements of heat capacity and thermal…
Quasiparticle entropy in the high-field superconducting phase of CeCoIn
Y. Tokiwa, E. D. Bauer, P. Gegenwart
The heavy-fermion superconductor CeCoIn displays an additional transition within its superconducting (SC) state, whose nature is characterized by high-precision studies of the…
High-resolution alternating-field technique to determine the magnetocaloric effect of metals down to very low temperatures
Yoshi Tokiwa, Philipp Gegenwart
The magnetocaloric effect or "magnetic Grüneisen ratio" quantifies the cooling or heating of a material when an applied magnetic field is changed under adiaba…
Magnetization study on the field-induced quantum critical point in YbRh_2Si_2
Y. Tokiwa, C. Geibel, F. Steglich +1
We study the field-induced quantum critical point (QCP) in YbRhSi by low-temperature magnetization, , and magnetic Grüneisen ratio, , measurements and co…
Field-induced suppression of the heavy-fermion state in YbRh_2Si_2
Y. Tokiwa, P. Gegenwart, T. Radu +4
We report DC magnetization measurements on YbRh_2Si_2 at temperatures down to 0.04K, magnetic fields B<11.5T and under hydrostatic pressure P<1.3GPa. At ambient pressure a kink at…