Zobrazeno 1 - 10
of 78
pro vyhledávání: '"Fouet, J."'
Autor:
Onofri, C., Monchoux, J.P., Amodeo, J., Madec, R., Sabathier, C., Palancher, H., Fouet, J., Drouan, D., Legros, M.
Publikováno v:
In Scripta Materialia 15 April 2024 244
Publikováno v:
Optics Letters 25, 1 (2000) 76
We consider the problem of the measurement of very small displacements in the transverse plane of an optical image with a split photodetector. We show that the standard quantum limit for such a measurement, which is equal to the diffraction limit div
Externí odkaz:
http://arxiv.org/abs/0812.2142
Autor:
Miyahara, S., Fouet, J. -B., Manmana, S. R., Noack, R. M., Mayaffre, H., Sheikin, I., Berthier, C., Mila, F.
We investigate the interplay of Dzyaloshinskii-Moriya interactions and an external field in spin 1/2 dimers. For isolated dimers and at low field, we derive simple expressions for the staggered and uniform magnetizations which show that the orientati
Externí odkaz:
http://arxiv.org/abs/cond-mat/0610861
Autor:
Clemancey, M., Mayaffre, H., Berthier, C., Horvatic, M., Fouet, J. -B., Miyahara, S., Mila, F., Chiari, B., Piovesana, O.
Publikováno v:
Physical Review Letters 97, 20 OCTOBER 2006 (2006) 167204
We present a $^2$D NMR investigation of the gapped spin-1/2 compound $Cu_2 (C_5 H_{12} N_2)_2 Cl_4$. Our measurements reveal the presence of a magnetic field induced transverse staggered magnetization (TSM) which persists well below and above the fie
Externí odkaz:
http://arxiv.org/abs/cond-mat/0609496
Publikováno v:
Phys. Rev. B 73, 214405 (2006)
Motivated by the ever-increasing experimental effort devoted to the properties of frustrated quantum magnets in a magnetic field, we present a careful and detailed theoretical analysis of a one-dimensional version of this problem, a frustrated ladder
Externí odkaz:
http://arxiv.org/abs/cond-mat/0603609
Publikováno v:
Phys. Rev. B 73,014409 (2006)
Motivated by the recent discovery of the spin tube [(CuCl$_2$tachH)$_3$Cl]Cl$_2$, we investigate the properties of a frustrated three-leg spin tube with antiferromagnetic intra-ring and inter-ring couplings. We pay special attention to the evolution
Externí odkaz:
http://arxiv.org/abs/cond-mat/0509217
Publikováno v:
Phys. Rev. B, 70, 174427 (2004)
Heisenberg antiferromagnets in a strong uniform magnetic field $H$ are expected to exhibit a gapless phase with a global O(2) symmetry. In many real magnets, a small energy gap is induced by additional interactions that can be viewed as a staggered t
Externí odkaz:
http://arxiv.org/abs/cond-mat/0404636
Exact diagonalizations indicate that the effective 1-dimensional behavior (sliding Luttinger liquid phase) of the frustrated spin-1/2 crossed chain model, predicted by Starykh, Singh and Levine [Phys. Rev. Lett. 88, 167203 (2002)], persists for a wid
Externí odkaz:
http://arxiv.org/abs/cond-mat/0204299
We describe four phases found in two-dimensional quantum antiferromagnets. Two of them display long range order at T=0: the N\'eel state and the Valence Bond Crystal. The last two are Spin-Liquids. Properties of these different states are shortly des
Externí odkaz:
http://arxiv.org/abs/cond-mat/0110283
Exact diagonalizations of the spin-1/2 Heisenberg model on the checkerboard lattice have been performed for sizes up to N=36 in the full Hilbert space and N=40 in the restricted subspace of first neighbor dimers. This antiferromagnet does not break S
Externí odkaz:
http://arxiv.org/abs/cond-mat/0108070