Kurita, N., Ronning, F., Tokiwa, Y., Bauer, E. D., Subedi, A., Singh, D. J., ...
We have performed low-temperature specific heat and thermal conductivity measurements of the Ni-based superconductor BaNi$_2$As$_2$ ($T_\mathrm{c}$ = 0.7 K) in magnetic field. In zero field, thermal...
Tokiwa, Y., Radu, T., Gegenwart, P., Geibel, C., Steglich, F.
The heavy fermion compound YbRh$_2$Si$_2$ is studied by low-temperature magnetization $M(T)$ and specific-heat $C(T)$ measurements at magnetic fields close to the quantum critical point ($H_c=0.06$...
Anisotropic effect of Cd and Hg doping on Pauli limited superconductor CeCoIn$_5$ (2008)
Tokiwa, Y., Movshovich, R., Ronning, F., Bauer, E. D., Papin, P., Bianchi, A. D., ...
We investigated the effect of Cd and Hg doping on the first order superconducting (SC) transition and the high field-low temperature SC state of CeCoIn$_5$ by measuring the specific heat of...
Unconventional quantum criticality in YbRh2Si2 (2008)
Gegenwart, P., Westerkamp, T., Krellner, C., Brando, M., Tokiwa, Y., Geibel, C., ...
Multiple Energy Scales at a Quantum Critical Point (2007)
Gegenwart, P., Westerkamp, T., Krellner, C., Tokiwa, Y., Paschen, S., Geibel, C., ...
Field induced magnetic phase transition as a magnon Bose Einstein condensation (2007)
Radu, T., Tokiwa, Y., Coldea, R., Gegenwart, P., Tylczynski, Z., Steglich, F.
Multiple energy scales at a quantum critical point (2006)
Gegenwart, P., Westerkamp, T., Krellner, C., Tokiwa, Y., Paschen, S., Geibel, C., ...
We report thermodynamic measurements in a magnetic-field-driven quantum critical point of a heavy fermion metal, YbRh$_2$Si$_2$. The data provide evidence for an energy scale in the equilibrium...
Magnetic phase transitions in the two-dimensional frustrated quantum antiferromagnet Cs2CuCl4 (2006)
Tokiwa, Y., Radu, T., Coldea, R., Wilhelm, H., Tylczynski, Z., Steglich, F.
We report magnetization and specific heat measurements in the 2D frustrated spin-1/2 Heisenberg antiferromagnet Cs2CuCl4 at temperatures down to 0.05 K and high magnetic fields up to 11.5 T applied...
Magnetic phase transitions in the two-dimensional frustrated quantum antiferromagnet Cs2CuCl4 (2006)
Tokiwa, Y., Radu, T., Coldea, R., Wilhelm, H., Tylczynski, Z., Steglich, F.
Low-temperature high-field magnetization of YbRh2Si2 and YbIr2Si2 under hydrostatic pressure (2006)
Tokiwa, Y., Gegenwart, P., Hossain, Z., Ferstl, J., Sparn, G., Geibel, C., ...
Low-temperature properties of the heavy fermion system YbIr2Si2 (2006)
Hossain, Z., Geibel, C., Radu, T., Tokiwa, Y., Weickert, F., Krellner, C., ...
High-field phase diagram of the heavy-fermion metal YbRh2Si2 (2006)
Gegenwart, P., Tokiwa, Y., Westerkamp, T., Weickert, F., Custers, J., Ferstl, J., ...
Magnetic properties close to the quantum critical point in YbRh2Si2 (2006)
Gegenwart, P., Tokiwa, Y., Custers, J., Geibel, C., Steglich, F.
Tokiwa, Y., Pikul, A., Gegenwart, P., Steglich, F., Bud'ko, S. L., Canfield, P. C.
We present temperature and field dependent heat capacity and magnetization data taken at temperatures down to 50 mK and in an applied magnetic field up to 11.5 Tesla for YbAgGe, a heavy-fermion...
Field-induced suppression of the heavy-fermion state in YbRh_2Si_2 (2005)
Tokiwa, Y., Gegenwart, P., Radu, T., Ferstl, J., Sparn, G., Geibel, C., ...
We report DC magnetization measurements on YbRh_2Si_2 at temperatures down to 0.04K, magnetic fields B
Ferromagnetic quantum critical fluctuations in YbRh_2(Si_{0.95}Ge_{0.05})_2 (2005)
Gegenwart, P., Custers, J., Tokiwa, Y., Geibel, C., Steglich, F.
The bulk magnetic susceptibility $\chi(T,B)$ of YbRh$_2$(Si$_{0.95}$Ge$_{0.05}$)$_2$ has been investigated %by ac-and dc-magnetometry at low temperatures and close to the field-induced quantum...
Pressure dependence of the low-temperature magnetization of YbRh2Si2 (2005)
Tokiwa,Y., Gegenwart,P., Sparn,G., Ferstl,J., Geibel,C., Steglich,F.
Magnetic properties of UTGa5 (T: transition metal) (2005)
Ikeda,S., Tokiwa,Y., Matsuda,T. D., Galatanu,A., Yamamoto,E., Nakamura,A., ...
Scaling of the magnetic entropy and magnetization in YbRh2(Si0.95Ge0.05)2 (2005)
Gegenwart,P., Tokiwa,Y., Neumaier,K., Geibel,C., Steglich,F.
Yb-based heavy-fermion metal situated close to a quantum critical point (2005)
Hossain,Z., Geibel,C., Weickert,F., Radu,T., Tokiwa,Y., Jeevan,H., ...
Field-Induced Suppression of the Heavy-Fermion State in YbRh2Si2 (2005)
Tokiwa,Y., Gegenwart,P., Radu,T., Ferstl,J., Sparn,G., Geibel,C., ...
Ferromagnetic Quantum Critical Fluctuations in YbRh2(Si0.95Ge0.05)2 (2005)
Gegenwart, P., Custers, J., Tokiwa, Y., Geibel, C., Steglich, F.
Pressure dependence of the low-temperature magnetization of YbRh2Si2 (2005)
Tokiwa, Y., Gegenwart, P., Sparn, G., Ferstl, J., Geibel, C., Steglich, F.
Magnetic properties of UTGa5 (T: transition metal) (2005)
Ikeda, S., Tokiwa, Y., Matsuda, T. D., Galatanu, A., Yamamoto, E., Nakamura, A., ...
Scaling of the magnetic entropy and magnetization in YbRh2(Si0.95Ge0.05)2 (2005)
Gegenwart, P., Tokiwa, Y., Neumaier, K., Geibel, C., Steglich, F.
Yb-based heavy-fermion metal situated close to a quantum critical point (2005)
Hossain, Z., Geibel, C., Weickert, F., Radu, T., Tokiwa, Y., Jeevan, H., ...
Field-Induced Suppression of the Heavy-Fermion State in YbRh2Si2 (2005)
Tokiwa, Y., Gegenwart, P., Radu, T., Ferstl, J., Sparn, G., Geibel, C., ...
Scaling of the magnetic entropy and magnetization in YbRh_2(Si_{0.95}Ge_{0.05})_2 (2004)
Gegenwart, P., Tokiwa, Y., Neumaier, K., Geibel, C., Steglich, F.
The magnetic entropy of YbRh_2(Si_{0.95}Ge_{0.05})_2 is derived from low-temperature ($T\geq 18$ mK) specific heat measurements. Upon field-tuning the system to its antiferromagnetic quantum critical...
Suppression of the Kondo state in YbRh2Si2 by large magnetic fields (2004)
Tokiwa,Y., Gegenwart,P., Weickert,F., Küchler,R., Custers,J., Ferstl,J., ...
Suppression of the Kondo state in YbRh2Si2 by large magnetic fields (2004)
Tokiwa, Y., Gegenwart, P., Weickert, F., Küchler, R., Custers, J., Ferstl, J., ...
The break-up of heavy electrons at a quantum critical point (2003)
Custers,J., Gegenwart,P., Wilhelm,H., Neumaier,K., Tokiwa,Y., Trovarelli,O., ...
The break up of heavy electrons at a quantum critical point (2003)
Custers, J., Gegenwart, P., Wilhelm, H., Neumaier, K., Tokiwa, Y., Trovarelli, O., ...
The point at absolute zero where matter becomes unstable to new forms of order is called a quantum critical point (QCP). The quantum fluctuations between order and disorder that develop at this point...
The break-up of heavy electrons at a quantum critical point (2003)
Custers, J., Gegenwart, P., Wilhelm, H., Neumaier, K., Tokiwa, Y., Trovarelli, O., ...
Pranamuda, H., Tokiwa, Y., Tanaka, H.
The biodegradability of poly(tetramethylene succinate) (PTMS), a synthetic aliphatic polyester with a high melting point, was evaluated. The ecological study showed that the distribution of...
Polylactide Degradation by an Amycolatopsis sp
Pranamuda, H., Tokiwa, Y., Tanaka, H.
By applying the plate count and clear-zone methods, it was confirmed that polylactide (PLA)-degrading microorganisms are sparsely distributed in soil environments. An Amycolatopsis isolate was...
Pranamuda, H., Tokiwa, Y., Tanaka, H.
The biodegradability of poly(tetramethylene succinate) (PTMS), a synthetic aliphatic polyester with a high melting point, was evaluated. The ecological study showed that the distribution of...
Polylactide Degradation by an Amycolatopsis sp
Pranamuda, H., Tokiwa, Y., Tanaka, H.
By applying the plate count and clear-zone methods, it was confirmed that polylactide (PLA)-degrading microorganisms are sparsely distributed in soil environments. An Amycolatopsis isolate was...