Heat transport of the spin-ice materials Ho2Ti2O7 and Dy2Ti2O7
Heat transport of the spin-ice materials Ho2Ti2O7 and Dy2Ti2O7
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自旋冰材料 Ho2Ti2O7 和 Dy2Ti2O7 的热传输
DOI:
10.1016/j.jmmm.2014.11.015
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发表时间:
2015
影响因子:
2.7
通讯作者:
T. Lorenz
中科院分区:
文献类型:
--
作者:
S. Scharffe;G. Kolland;M. Valldor;V. Cho;J.F. Welter;T. Lorenz
The elementary excitations of the spin-ice materials Ho 2 Ti 2 O 7 and Dy 2 Ti 2 O 7 in zero field can be described as independent magnetic monopoles. We investigate the influence of these exotic excitations on the heat transport by measuring the magnetic-field dependent thermal conductivity κ. Additional measurements on the highly dilute reference compounds HoYTi 2 O 7 and DyYTi 2 O 7 enable us to separate κ into a sum of phononic (κ ph) and magnetic (κ mag) contributions. For both spin-ice materials, we derive significant zero-field contributions κ mag, which are rapidly suppressed in finite magnetic fields. Moreover, κ mag sensitively depends on the scattering of phonons by magnetic excitations, which is rather different for the Ho-and the Dy-based materials and, as a further consequence, the respective magnetic-field dependent changes κ ph (B) are even of opposite signs.
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影响因子:
19.6
作者:
Giblin, S. R.;Bramwell, S. T.;Terry, I.
通讯作者:
Terry, I.
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
L. Yaraskavitch;H. Revell;S. Meng;K. Ross;H. Noad;H. Da̧bkowska;B. Gaulin;J. Kycia
通讯作者:
J. Kycia
影响因子:
3.7
作者:
C. Fan;Z. Zhao;H. Zhou;X. M. Wang;Q. Li;F. Zhang;X. Zhao;X. Sun
通讯作者:
X. Sun
影响因子:
8.6
作者:
T. Sakakibara;T. Tayama;Z. Hiroi;K. Matsuhira;S. Takagi
通讯作者:
S. Takagi
影响因子:
1.1
作者:
Ryzhkin, IA
通讯作者:
Ryzhkin, IA