caa a22 4500 44536680X CHVBK 20180317142933.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s10909-011-0348-y doi (NATIONALLICENCE)springer-10.1007/s10909-011-0348-y Thermal Relaxation and Heat Transport in the Spin Ice Material Dy2Ti2O7 [Elektronische Daten] [B. Klemke, M. Meissner, P. Strehlow, K. Kiefer, S. Grigera, D. Tennant] The thermal properties of single crystalline Dy2Ti2O7 have been studied in a temperature range from 0.3K to 30K and magnetic fields applied along [110] direction up to 1.5T. Based on a thermodynamic field theory various heat relaxation and thermal transport measurements were analysed. So we were able to present not only the heat capacity of Dy2Ti2O7 in the whole temperature and magnetic field range, but also the different contributions of the magnetic excitations and their corresponding relaxation times in the spin ice phase. In addition, the thermal conductivity and the shortest relaxation time were determined by thermodynamic analysis of steady state heat transport measurements. Finally, we were able to reproduce the temperature profiles recorded in heat pulse experiments on the basis of the thermodynamic field theory using the previously determined heat capacity and thermal conductivity data without additional parameters. Thus, the thermodynamic field theory has been proved to be thermodynamically consistent in describing three thermal transport experiments on different time scales. The observed temperature and field dependencies of heat capacity contributions and relaxation times indicate the magnetic excitations in the spin ice material Dy2Ti2O7 as thermally activated monopole-antimonopole defects. Springer Science+Business Media, LLC, 2011 Frustrated magnetism nationallicence Magnetic monopoles nationallicence Specific heat nationallicence Thermal conductivity nationallicence Klemke B. Institut komplexe magnetische Materialien, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Berlin, Germany aut Meissner M. Institut für Festkörperphysik, Technische Universität Berlin, Berlin, Germany aut Strehlow P. Institut Berlin, Physikalisch-Technische Bundesanstalt, Berlin, Germany aut Kiefer K. Abteilung Probenumgebung, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Berlin, Germany aut Grigera S. School of Physics and Astronomy, St. Andrews, UK aut Tennant D. Institut komplexe magnetische Materialien, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Berlin, Germany aut Journal of Low Temperature Physics Springer US; http://www.springer-ny.com 163/5-6(2011-06-01), 345-369 0022-2291 163:5-6<345 2011 163 10909 https://doi.org/10.1007/s10909-011-0348-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10909-011-0348-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Klemke B. Institut komplexe magnetische Materialien, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Berlin, Germany aut NATIONALLICENCE 700 1- Meissner M. Institut für Festkörperphysik, Technische Universität Berlin, Berlin, Germany aut NATIONALLICENCE 700 1- Strehlow P. Institut Berlin, Physikalisch-Technische Bundesanstalt, Berlin, Germany aut NATIONALLICENCE 700 1- Kiefer K. Abteilung Probenumgebung, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Berlin, Germany aut NATIONALLICENCE 700 1- Grigera S. School of Physics and Astronomy, St. Andrews, UK aut NATIONALLICENCE 700 1- Tennant D. Institut komplexe magnetische Materialien, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Berlin, Germany aut NATIONALLICENCE 773 0- Journal of Low Temperature Physics Springer US; http://www.springer-ny.com 163/5-6(2011-06-01), 345-369 0022-2291 163:5-6<345 2011 163 10909 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer