Zobrazeno 1 - 10
of 421
pro vyhledávání: '"Goncharenko, I."'
Autor:
Baldini, M., Capogna, L., Capone, M., Arcangeletti, E., Petrillo, C., Goncharenko, I., Postorino, P.
Publikováno v:
J. Phys.: Condens. Matter 24 045601 (2012)
The pressure dependence of the Curie temperature T$_{C}(P)$ in La$_{0.75}$Ca$_{0.25}$MnO$_{3}$ was determined by neutron diffraction up to 8 GPa, and compared with the metallization temperature T$_{IM}(P)$ \cite{irprl}. The behavior of the two temper
Externí odkaz:
http://arxiv.org/abs/1112.1927
We have studied the Tb$_2$Sn$_2$O$_7$ frustrated magnet by neutron diffraction under isotropic pressure of 4.6 GPa, combined with uniaxial pressure of 0.3 GPa, in the temperature range 0.06 K$<$T$<$100 K. Magnetic order persists under pressure but th
Externí odkaz:
http://arxiv.org/abs/0906.4951
Publikováno v:
Grav.Cosmol.13:262-266,2007
Composite fluxbrane and S-brane solutions for a wide class of intersection rules are considered. These solutions are defined on a product manifold R_{*} x M_1 x ... x M_n which contains n Ricci-flat spaces M_1, ..., M_n with 1-dimensional factor spac
Externí odkaz:
http://arxiv.org/abs/math-ph/0612079
Publikováno v:
Grav.Cosmol.12:169-172,2006
We generalize the previously studied cosmological solutions in D-dimensional gravity with an antisymmetric (p+2)-form to the case when the spatial part of the metric is Ricci-flat rather than flat. These generalized solutions are characterized by a p
Externí odkaz:
http://arxiv.org/abs/gr-qc/0609114
Autor:
Mirebeau, I., Apetrei, A., Goncharenko, I., Andreica, D., Bonville, P., Sanchez, J. P., Amato, A., Suard, E., Crichton, W. A.
R$_2$Mo$_2$O$_7$ compounds show a ferromagnetic metal-insulator spin glass transition tuned by the radius of the rare earth ion R$^{3+}$. We have studied Gd$_2$Mo$_2$O$_7$ located on the verge of the transition, by neutron diffraction on a $^{160}$Gd
Externí odkaz:
http://arxiv.org/abs/cond-mat/0606420
We have studied (Tb$_{1-x}$La$_x$)$_2$Mo$_2$O$_7$ pyrochlores by neutron diffraction and $\mu$SR at ambient and under applied pressure. Substitution of Tb for La expands the lattice and induces a change from a spin-glass like state ({\itshape x}=0) t
Externí odkaz:
http://arxiv.org/abs/cond-mat/0604627
In the pyrochlore compounds, Tb$_2$Ti$_2$O$_7$ and Tb$_2$Sn$_2$O$_7$, only the Tb$^{3+}$ ions are magnetic. They exhibit quite abnormal -- and, in view of their chemical similarity, strikingly different -- magnetic behaviour, as probed by neutron dif
Externí odkaz:
http://arxiv.org/abs/cond-mat/0602384
Autor:
Llobet, A., Gardner, J. S., Moshopoulou, E. G., Mignot, J. -M., Nicklas, M., Bao, W., Moreno, N. O., Pagliuso, P. G., Goncharenko, I. N., Sarrao, J. L., Thompson, J. D.
We report magnetic neutron-diffraction and electrical resistivity studies on single crystals of the heavy-fermion antiferromagnet CeRhIn$_{5}$ at pressures up to 2.3 GPa. These experiments show that the staggered moment of Ce and the incommensurate m
Externí odkaz:
http://arxiv.org/abs/cond-mat/0307055
Publikováno v:
Phys. Rev. B 67, 224426 (2003)
By neutron scattering, we have studied the spin correlations and spin fluctuations in frustrated Laves hydrides, where magnetic disorder sets in the topologically frustrated Mn lattice. Below the transition towards short range magnetic order, static
Externí odkaz:
http://arxiv.org/abs/cond-mat/0306743
Neutron diffraction experiments on TmTe at pressures up to 7 GPa are reported. The semiconductor-to-metal transition occurring at 2 GPa in this compound is accompanied by the appearance of strong ferromagnetic exchange interactions producing a Curie
Externí odkaz:
http://arxiv.org/abs/cond-mat/9711121