Zobrazeno 1 - 10
of 309
pro vyhledávání: '"Castelnovo C"'
Autor:
Coak, M. J., Götze, K., De La Fuente, T. Northam, Castelnovo, C., Tidey, J. P., Singleton, J., Boothroyd, A. T., Prabhakaran, D., Goddard, P. A.
Publikováno v:
npj Quantum Materials 9, 1 (2024)
Rare-earth pyrochlore iridates host two interlocking magnetic sublattices of corner-sharing tetrahedra and can harbour a unique combination of frustrated moments, exotic excitations and highly correlated electrons. They are also the first systems pre
Externí odkaz:
http://arxiv.org/abs/2210.05641
Autor:
Pearce, M. J., Götze, K., Szabó, A., Sikkenk, T. S., Lees, M. R., Boothroyd, A. T., Prabhakaran, D., Castelnovo, C., Goddard, P. A.
Frustration in magnetic systems is fertile ground for complex behaviour, including unconventional ground states with emergent symmetries, topological properties, and exotic excitations. A canonical example is the emergence of magnetic-charge-carrying
Externí odkaz:
http://arxiv.org/abs/2102.04483
Autor:
Bowman, D. F., Cemal, E., Lehner, T., Wildes, A. R., Mangin-Thro, L., Nilsen, G. J., Gutmann, M. J., Voneshen, D. J., Prabhakaran, D., Boothroyd, A. T., Porter, D. G., Castelnovo, C., Refson, K., Goff, J. P.
Publikováno v:
Nature Communications 10:637 (2019)
Pyrochlore systems are ideally suited to the exploration of geometrical frustration in three dimensions, and their rich phenomenology encompasses topological order and fractional excitations. Classical spin ices provide the first context in which it
Externí odkaz:
http://arxiv.org/abs/1902.07179
Publikováno v:
Phys. Rev. B 95, 134439 (2017)
We propose a semi-classical description of the low-energy properties of quantum spin ice in the strong Ising limit. Within the framework of a semiclassical, perturbative Villain expansion, that can be truncated at arbitrary order, we give an analytic
Externí odkaz:
http://arxiv.org/abs/1609.03079
Autor:
Sala, G., Gutmann, M. J., Prabhakaran, D., Pomaranski, D., Mitchelitis, C., Kycia, J. B., Porter, D. G., Castelnovo, C., Goff, J. P.
Publikováno v:
Nat. Mat. 13, 488 (2014)
The idea of magnetic monopoles in spin ice has enjoyed much success at intermediate temperatures, but at low temperatures a description in terms of monopole dynamics alone is insufficient. Recently, numerical simulations were used to argue that magne
Externí odkaz:
http://arxiv.org/abs/1505.07035
Akademický článek
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We have studied the field-dependent ac magnetic susceptibility of single crystals of Dy2Ti2O7 spin ice along the [111] direction in the temperature range 1.8 K - 7 K. Our data reflect the onset of local spin ice order in the appearance of different f
Externí odkaz:
http://arxiv.org/abs/1211.4280
Publikováno v:
Annual Review of Condensed Matter Physics 3, 35-55 (2012)
The spin ice compounds {\dys} and {\holm} are highly unusual magnets which epitomize a set of concepts of great interest in modern condensed matter physics: their low-energy physics exhibits an emergent gauge field and their excitations are magnetic
Externí odkaz:
http://arxiv.org/abs/1112.3793
Autor:
Sala, G., Castelnovo, C., Moessner, R., Sondhi, S. L., Kitagawa, K., Takigawa, M., Higashinaka, R., Maeno, Y.
Publikováno v:
Phys. Rev. Lett. 108, 217203 (2012)
Fractionalisation -- the breaking up of an apparently indivisible microscopic degree of freedom -- is one of the most counterintuitive phenomena in many-body physics. Here we study its most fundamental manifestation in spin ice, the only known fracti
Externí odkaz:
http://arxiv.org/abs/1112.3363
Autor:
Morris, D. J. P., Tennant, D. A., Grigera, S. A., Klemke, B., Castelnovo, C., Moessner, R., Czternasty, C., Meissner, M., Rule, K. C., Hoffmann, J. -U., Kiefer, K., Gerischer, S., Slobinsky, D., Perry, R. S.
Publikováno v:
Science 326, 411-414 (2009)
While sources of magnetic fields - magnetic monopoles - have so far proven elusive as elementary particles, several scenarios have been proposed recently in condensed matter physics of emergent quasiparticles resembling monopoles. A particularly simp
Externí odkaz:
http://arxiv.org/abs/1011.1174