Zobrazeno 1 - 10
of 165
pro vyhledávání: '"Grigera, S. A."'
We present a simple two-dimensional model in which the lattice degrees of freedom mediate the interactions between magnetic moments and electric dipoles. This model reproduces basic features, such as a sudden electric polarization switch-off when a m
Externí odkaz:
http://arxiv.org/abs/2111.06765
Quantum materials research requires co-design of theory with experiments and involves demanding simulations and the analysis of vast quantities of data, usually including pattern recognition and clustering. Artificial intelligence is a natural route
Externí odkaz:
http://arxiv.org/abs/2110.15817
Autor:
Samarakoon, Anjana M., Sokolowski, Andre, Klemke, Bastian, Feyerherm, Ralf, Meissner, Michael, Borzi, R. A., Ye, Feng, Zhang, Qiang, Dun, Zhiling, Zhou, Haidong, Egami, T., Hallen, Jonathan N., Jaubert, Ludovic, Castelnovo, Claudio, Moessner, Roderich, Grigera, S. A., Tennant, D. Alan
Publikováno v:
Phys. Rev. Research 4, 033159 (2022)
The spin ice compound Dy$_2$Ti$_2$O$_7$ is well-known to realise a three-dimensional Coulomb spin liquid with magnetically charged monopole excitations. Its fate at low temperatures, however, remains an intriguing open question. Based on a low-temper
Externí odkaz:
http://arxiv.org/abs/2107.12305
Autor:
Samarakoon, Anjana M., Grigera, S. A., Tennant, D. Alan, Kirste, Alexander, Klemke, Bastian, Strehlow, Peter, Meissner, Michael, Hallen, Jonathan N., Jaubert, Ludovic, Castelnovo, Claudio, Moessner, Roderich
Publikováno v:
Proceedings of the National Academy of Sciences, Volume 119, Issue 5, article id.e2117453119 (2022))
The spin ice compound Dy_2Ti_2O_7 stands out as the first topological magnet in three dimensions, with its tell-tale emergent fractionalized magnetic monopole excitations. Its real-time dynamical properties have been an enigma from the very beginning
Externí odkaz:
http://arxiv.org/abs/2107.11379
Autor:
Pili, L., Steppke, A., Barber, M. E., Jerzembeck, F., Hicks, C. W., Guruciaga, P. C., Prabhakaran, D., Moessner, R., Mackenzie, A. P., Grigera, S. A., Borzi, R. A.
We study single crystals of Dy$_2$Ti$_2$O$_7$ and Ho$_2$Ti$_2$O$_7$ under magnetic field and stress applied along their [001] direction. We find that many of the features that the emergent gauge field of spin ice confers to the macroscopic magnetic p
Externí odkaz:
http://arxiv.org/abs/2105.07977
Ising models on a pyrochlore oxide lattice are usually associated with spin ice materials and "magnetic monopoles". Ever more often effects connecting magnetic and elastic degrees of freedom are reported on these and other related frustrated material
Externí odkaz:
http://arxiv.org/abs/2011.15017
Autor:
Borzi, R. A., Albarracín, F. A. Gómez, Rosales, H. D., Rossini, G. L., Steppke, A., Prabhakaran, D., Mackenzie, A. P., Cabra, D. C., Grigera, S. A.
Publikováno v:
Nature Communications 7, 12592 (2016)
Among the frustrated magnetic materials, spin-ice stands out as a particularly interesting system. Residual entropy, freezing and glassiness, Kasteleyn transitions and fractionalisation of excitations in three dimensions all stem from a simple classi
Externí odkaz:
http://arxiv.org/abs/1608.02627
Autor:
Grigera, S. A., Hooley, C. A.
Publikováno v:
J. Phys. Commun. 2, 085004 (2018)
We present a combined analytical and numerical study of the entropy as a function of magnetization for an orientable 2D spin-ice model that exhibits a Kasteleyn transition. The model that we use is related to the well known six-vertex model but, as w
Externí odkaz:
http://arxiv.org/abs/1607.04657
Autor:
Grigera, S. A., Borzi, R., Slobinsky, D. G., Gibbs, A. S., Higashinaka, R., Maeno, Y., Grigera, T. S.
Publikováno v:
Papers in Physics 7, 070009 (2015)
Dy$_2$Ti$_2$O$_7$ is at present the cleanest example of a spin-ice material. Previous theoretical and experimental work on the first-order transition between the kagome-ice and the fully polarized state has been taken as a validation for the dipolar
Externí odkaz:
http://arxiv.org/abs/1510.05962
In this article we study the classical nearest-neighbour spin-ice model (nnSI) by means of Monte Carlo simulations, using the Wang-Landau algorithm. The nnSI describes several of the salient features of the spin-ice materials. Despite its simplicity
Externí odkaz:
http://arxiv.org/abs/1507.03561