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Publikováno v:
In Journal of Magnetism and Magnetic Materials 15 August 2021 532
Publikováno v:
Physical Review B 92, 180405(R) (2015)
Around 0.5 K, the entropy of the spin-ice Dy$_2$Ti$_2$O$_7$ has a plateau-like feature close to Pauling's residual entropy derived originally for water ice, but an unambiguous quantification towards lower temperature is prevented by ultra-slow therma
Externí odkaz:
http://arxiv.org/abs/1503.03856
Publikováno v:
J. Magn. Magn. Mater. 383, 83 (2015)
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
Externí odkaz:
http://arxiv.org/abs/1406.4037
Publikováno v:
Physical Review B 90, 104419 (2014)
BaCo$_2$V$_2$O$_8$ is a one-dimensional antiferromagnetic spin-1/2 chain system with pronounced Ising anisotropy of the magnetic exchange. Due to finite interchain interactions long-range antiferromagnetic order develops below $T_{\rm N} \simeq 5.5$
Externí odkaz:
http://arxiv.org/abs/1405.7273
Autor:
Niesen, S. K., Kolland, G., Seher, M., Breunig, O., Valldor, M., Braden, M., Grenier, B., Lorenz, T.
Publikováno v:
Phys. Rev. B 87, 224413 (2013)
In the effective Ising spin-1/2 antiferromagnetic chain system BaCo$_2$V$_2$O$_8, the magnetic-field influence is highly anisotropic. For magnetic fields along the easy axis $c$, the N\'{e}el order is strongly suppressed already for low fields and an
Externí odkaz:
http://arxiv.org/abs/1303.5599
Publikováno v:
Phys. Rev. B 88, 054406 (2013)
We report a study of the thermal conductivity $\kappa$ of the spin-ice material Dy$_2$Ti$_2$O$_7$. From the anisotropic magnetic-field dependence of \kappa$ and by additional measurements on the phononic reference compounds Y$_2$Ti$_2$O$_7$ and DyYTi
Externí odkaz:
http://arxiv.org/abs/1302.6114
Publikováno v:
Physical Review B 86, 060402(R) (2012)
Elementary excitations in the spin-ice compound Dy$_2$Ti$_2$O$_7$ can be described as magnetic monopoles propagating independently within the pyrochlore lattice formed by magnetic Dy ions. We studied the magnetic-field dependence of the thermal condu
Externí odkaz:
http://arxiv.org/abs/1205.5700
Autor:
Hollmann, N., Hu, Z., Wu, Hua, Valldor, M., Qureshi, N., Willers, T., Chin, Y. -Y., Cezar, J. C., Tanaka, A., Brookes, N. B., Tjeng, L. H.
CaBaFe4O7 is a mixed-valent transition metal oxide having both Fe2+ and Fe3+ ions in tetrahedral coordination. Here we characterize its magnetic properties by magnetization measurements and investigate its local electronic structure using soft x-ray
Externí odkaz:
http://arxiv.org/abs/1011.4818
Publikováno v:
Phys. Rev. B 83, 024418 (2011)
The crystal structure and the magnetism of BaMn$_2$O$_3$ have been studied by thermodynamic and by diffraction techniques using large single crystals and powders. BaMn$_2$O$_3$ is a realization of a $S = 5/2$ spin ladder as the magnetic interaction i
Externí odkaz:
http://arxiv.org/abs/1010.1183