Zobrazeno 1 - 10
of 209
pro vyhledávání: '"Borzì, R"'
In this work, we explore the magnetic behavior of diluted spin-ice systems, where magnetic moments are randomly removed at various concentrations. We concentrate on features in which the effect of long range dipolar interactions (usually masked by se
Externí odkaz:
http://arxiv.org/abs/2411.04738
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
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:
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
Publikováno v:
Phys. Rev. B 100, 020405 (2019)
The forging of strong correlations on decreasing temperature can take place without the arousal of conventional order. If this happens, as in some geometrically frustrated magnets, disorder can be a phenomenon more interesting than order itself. A Co
Externí odkaz:
http://arxiv.org/abs/1903.11493
Publikováno v:
Phys. Rev. B 97, 174422 (2018)
A \emph{monopole liquid} is a magnetic charge-disordered spin system defined over an Ising pyrochlore lattice, with one single topological charge or \emph{monopole} in each tetrahedron. We define a simple model Hamiltonian for this system and compare
Externí odkaz:
http://arxiv.org/abs/1801.00645
Autor:
Baez, M. L., Borzi, R. A.
Publikováno v:
J. Phys.: Condens. Matter 29 055806 2016
We study the three-dimensional Kasteleyn transition in both nearest neighbours and dipolar spin ice models using an algorithm that conserves the number of excitations. We first limit the interactions range to nearest neighbours to test the method in
Externí odkaz:
http://arxiv.org/abs/1611.06424
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., 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