A look into one of our laboratories for physical characterization showing instruments for the measurement of magnetic properties, electrical and thermal transport properties, specific heat capacity etc at low temperatures and in high magnetic fields

Publications of Y. Tokiwa

Journal Article (21)

2010
Journal Article
Gegenwart, P.; Tokiwa, Y.; Donath, J. G.; Küchler, R.; Bergmann, C.; Jeevan, H. S.; Bauer, E. D.; Sarrao, J. L.; Geibel, C.; Steglich, F.: Divergence of the Grüneisen Parameter and Magnetocaloric Effect at Heavy Fermion Quantum Critical Points. Journal of Low Temperature Physics 161 (1-2), pp. 117 - 133 (2010)
Journal Article
Steglich, F.; Arndt, J.; Friedemann, S.; Krellner, C.; Tokiwa, Y.; Westerkamp, T.; Brando, M.; Gegenwart, P.; Geibel, C.; Wirth, S. et al.; Stockert, O.: Superconductivity versus quantum criticality: what can we learn from heavy fermions? Journal of Physics: Condensed Matter 22 (16), 164202, pp. 164202-1 - 164202-7 (2010)
2009
Journal Article
Tokiwa, Y.; Gegenwart, P.; Geibel, C.; Steglich, F.: Separation of Energy Scales in Undoped YbRh2Si2 Under Hydrostatic Pressure. Journal of the Physical Society of Japan 78 (12), 123708, pp. 123708-1 - 123708-4 (2009)
Journal Article
Tokiwa, Y.; Radu, T.; Geibel, C.; Steglich, F.; Gegenwart, P.: Divergence of the Magnetic Grüneisen Ratio at the Field-Induced Quantum Critical Point in YbRh2Si2. Physical Review Letters 102, 066401, pp. 066401-1 - 066401-4 (2009)
2008
Journal Article
Gegenwart, P.; Westerkamp, T.; Krellner, C.; Brando, M.; Tokiwa, Y.; Geibel, C.; Steglich, F.: Unconventional quantum criticality in YbRh2Si2. Physica B 403, pp. 1184 - 1188 (2008)
2007
Journal Article
Gegenwart, P.; Westerkamp, T.; Krellner, C.; Tokiwa, Y.; Paschen, S.; Geibel, C.; Steglich, F.; Abrahams, E.; Si, Q.: Multiple Energy Scales at a Quantum Critical Point. Science 315, pp. 969 - 971 (2007)
Journal Article
Radu, T.; Tokiwa, Y.; Coldea, R.; Gegenwart, P.; Tylczynski, Z.; Steglich, F.: Field induced magnetic phase transition as a magnon Bose Einstein condensation. Science and Technology of Advanced Materials 8, pp. 406 - 409 (2007)
2006
Journal Article
Gegenwart, P.; Tokiwa, Y.; Custers, J.; Geibel, C.; Steglich, F.: Magnetic properties close to the quantum critical point in YbRh2Si2. Journal of the Physical Society of Japan / Supplement 75, pp. 155 - 159 (2006)
Journal Article
Gegenwart, P.; Tokiwa, Y.; Westerkamp, T.; Weickert, F.; Custers, J.; Ferstl, J.; Krellner, C.; Geibel, C.; Kerschl, P.; Müller, K.-H. et al.; Steglich, F.: High-field phase diagram of the heavy-fermion metal YbRh2Si2. New Journal of Physics 8, 171, pp. 1 - 12 (2006)
Journal Article
Hossain, Z.; Geibel, C.; Radu, T.; Tokiwa, Y.; Weickert, F.; Krellner, C.; Jeevan, H.; Gegenwart, P.; Steglich, F.: Low-temperature properties of the heavy fermion system YbIr2Si2. Physica B 378-380, pp. 74 - 75 (2006)
Journal Article
Tokiwa, Y.; Gegenwart, P.; Hossain, Z.; Ferstl, J.; Sparn, G.; Geibel, C.; Steglich, F.: Low-temperature high-field magnetization of YbRh2Si2 and YbIr2Si2 under hydrostatic pressure. Physica B 378-380, pp. 746 - 747 (2006)
Journal Article
Tokiwa, Y.; Pikul, A.; Gegenwart, P.; Steglich, F.; Bud'ko, S. L.; Canfield, P. C.: Low-temperature thermodynamic properties of the heavy-fermion compound YbAgGe close to the field-induced quantum critical point. Physical Review B 73 (9), 094435, pp. 094435-1 - 094435-6 (2006)
Journal Article
Tokiwa, Y.; Radu, T.; Coldea, R.; Wilhelm, H.; Tylczynski, Z.; Steglich, F.: Magnetic phase transitions in the two-dimensional frustrated quantum antiferromagnet Cs2CuCl4. Physical Review B 73 (13), 134414, pp. 134414-1 - 134414-7 (2006)
2005
Journal Article
Gegenwart, P.; Custers, J.; Tokiwa, Y.; Geibel, C.; Steglich, F.: Ferromagnetic Quantum Critical Fluctuations in YbRh2(Si0.95Ge0.05)2. Physical Review Letters 94 (7), pp. 076402-1 - 076402-4 (2005)
Journal Article
Gegenwart, P.; Tokiwa, Y.; Neumaier, K.; Geibel, C.; Steglich, F.: Scaling of the magnetic entropy and magnetization in YbRh2(Si0.95Ge0.05)2. Physica B-Condensed Matter 359-361, pp. 23 - 25 (2005)
Journal Article
Hossain, Z.; Geibel, C.; Weickert, F.; Radu, T.; Tokiwa, Y.; Jeevan, H.; Gegenwart, P.; Steglich, F.: Yb-based heavy-fermion metal situated close to a quantum critical point. Physical Review B 72, 094411, pp. 094411-1 - 094411-4 (2005)
Journal Article
Ikeda, S.; Tokiwa, Y.; Matsuda, T. D.; Galatanu, A.; Yamamoto, E.; Nakamura, A.; Haga, Y.; Ōnuki, Y.: Magnetic properties of UTGa5 (T: transition metal). Physica B-Condensed Matter 359-361, pp. 1039 - 1041 (2005)
Journal Article
Tokiwa, Y.; Gegenwart, P.; Radu, T.; Ferstl, J.; Sparn, G.; Geibel, C.; Steglich, F.: Field-Induced Suppression of the Heavy-Fermion State in YbRh2Si2. Physical Review Letters 94 (22), 226402, pp. 226402-1 - 226402-4 (2005)
Journal Article
Tokiwa, Y.; Gegenwart, P.; Sparn, G.; Ferstl, J.; Geibel, C.; Steglich, F.: Pressure dependence of the low-temperature magnetization of YbRh2Si2. Physica B-Condensed Matter 359-361, pp. 29 - 31 (2005)
2004
Journal Article
Tokiwa, Y.; Gegenwart, P.; Weickert, F.; Küchler, R.; Custers, J.; Ferstl, J.; Geibel, C.; Steglich, F.: Suppression of the Kondo state in YbRh2Si2 by large magnetic fields. Journal of Magnetism and Magnetic Materials (Supplement) 272-276, pp. e87 - e88 (2004)
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