Zobrazeno 1 - 10
of 560
pro vyhledávání: '"Lago J"'
This paper main goal is to measure the defect of Cohen-Macaulayness, Gorensteiness, complete intersection and regularity for the tensor product of algebras over a ring. For this sake, we determine the homological invariants which are inherent to thes
Externí odkaz:
http://arxiv.org/abs/1512.02804
Akademický článek
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Autor:
de Reotier, P. Dalmas, Yaouanc, A., Chapuis, Y., Curnoe, S. H., Grenier, B., Ressouche, E., Marin, C., Lago, J., Baines, C., Giblin, S. R.
Publikováno v:
Phys. Rev. B 86, 104424 (2012)
Er2Ti2O7 is believed to be a realization of an XY antiferromagnet on a frustrated lattice of corner-sharing regular tetrahedra. It is presented as an example of the order-by-disorder mechanism in which fluctuations lift the degeneracy of the ground s
Externí odkaz:
http://arxiv.org/abs/1209.6153
Publikováno v:
Journal of Physics: Conference Series 145 (2009) 012033
A study of the modifications of the magnetic properties of Ho$_{2-x}$Y$_x$Sn$_2$O$_7$ upon varying the concentration of diamagnetic Y$^{3+}$ ions is presented. Magnetization and specific heat measurements show that the Spin Ice ground-state is only w
Externí odkaz:
http://arxiv.org/abs/0810.0608
Autor:
Bianchi, A., Carretta, S., Santini, P., Amoretti, G., Furukawa, Y., Kiuchi, K., Ajiro, Y., Narumi, Y., Kindo, K., Lago, J., Micotti, E., Arosio, P., Lascialfari, A., Borsa, F., Timco, G., Winpenny, R. E. P.
We study the magnetization and the spin dynamics of the Cr$_7$Ni ring-shaped magnetic cluster. Measurements of the magnetization at high pulsed fields and low temperature are compared to calculations and show that the spin Hamiltonian approach provid
Externí odkaz:
http://arxiv.org/abs/0808.2621
Autor:
Malkin, B. Z., Vanyunin, M. V., Graf, M. J., Lago, J., Borsa, F., Lascialfari, A., Tkachuk, A. M., Barbara, B.
Temperature and magnetic field dependences of the 19F nuclear spin-lattice relaxation in a single crystal of LiYF4 doped with holmium are described by an approach based on a detailed consideration of the magnetic dipole-dipole interactions between nu
Externí odkaz:
http://arxiv.org/abs/0808.2137
Autor:
Graf, M. J., Lago, J., Lascialfari, A., Amato, A., Baines, C., Giblin, S. R., Lord, J. S., Tkachuk, A. M., Barbara, B.
We have studied the Ho3+ spin dynamics for LiY0.998Ho0.002F4 through the positive muon (mu+) transverse field depolarization rate lambda_TF as a function of temperature and magnetic field. We find sharp reductions in lambda_TF(H) at fields of 23, 46
Externí odkaz:
http://arxiv.org/abs/0709.0684
Publikováno v:
In Journal of Pure and Applied Algebra August 2018 222(8):2257-2266
Magnetotransport properties of the compound Ca4Mn3O10 are interpreted in terms of activated hopping of small magnetic polarons in the non-adiabatic regime. Polarons are most likely formed around Mn3+ sites created by oxygen substoichiometry. The appl
Externí odkaz:
http://arxiv.org/abs/cond-mat/0305421
Autor:
Champion, J. D. M., Harris, M. J., Holdsworth, P. C. W., Wills, A. S., Balakrishnan, G., Bramwell, S. T., Cizmar, E., Fennell, T., Gardner, J. S., Lago, J., McMorrow, D. F., Orendac, M., Orendacova, A., Paul, D. McK., Smith, R. I., Telling, M. T. F., Wildes, A.
Publikováno v:
Physical Review B, 68, 020401(R) (2003)
Er_2Ti_2O_7 has been suggested to be a realization of the frustrated < 111 > XY pyrochlore lattice antiferromagnet, for which theory predicts fluctuation-induced symmetry breaking in a highly degenerate ground state manifold. We present a theoretical
Externí odkaz:
http://arxiv.org/abs/cond-mat/0112007