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  1. No Access

    Article

    Thermodynamic properties of the spin-1/2 antiferromagnetic ladder under magnetic field

    Specific heat (CV) measurements in the spin-1/2 Cu2(C2H12N2)2Cl4 system under a magnetic field up to H =8.25 T are reported and compared to the results of numerical calculations based on the 2-leg antiferromagnet...

    R. Calemczuk, J. Riera, D. Poilblanc… in The European Physical Journal B - Condense… (1999)

  2. No Access

    Chapter

    Non-Linear Excitations in Haldane Spin Chains

    The concept of magnetism in one-dimension (1D) was considered initially as purely theoretical. The idea was to study simple models so as to find reliable solutions, which could apply or be extended to more com...

    J. P. Boucher in Nonlinear Coherent Structures in Physics and Biology (1994)

  3. No Access

    Article

    Model dependence of the longitudinal μSR depolarisation function in nuclear dipole systems

    We have performed an extensive numerical study of the μSR longitudinal depolarisation function,P(t), in nuclear dipole systems. The muon is assumed to be static. This work has been performed to obtain some inform...

    P. Dalmas de Réotier, A. Yaouanc, J. P. Boucher in Hyperfine Interactions (1991)

  4. No Access

    Chapter and Conference Paper

    Free vortices in the quasi-two dimensional XY antiferromagnet BaNl2(PO4)2?

    P. Gaveau, J. P. Boucher, A. Bouvet… in Nonlinear Coherent Structures in Physics a… (1991)

  5. No Access

    Chapter and Conference Paper

    Critical fluctuations in the 2D XY antiferromagnet BaNi2(PO4)2 : NMR measurements

    Non-linear excitations are known to play a crucial role in low-dimensional magnetism. For the two-dimensional (2D) XY model these non-linear excitations are described in terms of vortices which govern the so-c...

    Ph. Gaveau, J. P. Boucher, L. P. Regnault, Y. Henry in Nonlinear Coherent Structures (1990)

  6. No Access

    Chapter

    Spin Dynamics in the Paramagnetic Regime: NMR and EPR in Two-Dimensional Magnets

    The study of spin fluctuations in magnetic systems raises challenging questions which, since the pioneering work of Kubo and Tomita [1] and of Moriya [2], have been widely investigated. In the last fifteen yea...

    H. Benner, J. P. Boucher in Magnetic Properties of Layered Transition Metal Compounds (1990)

  7. No Access

    Chapter and Conference Paper

    Doublings of Soliton Modes and Soliton Magnetic Resonance (SMR)

    In the field of non-linear excitations, antiferromagnetic (AF) Ising-like chains are expected to reveal new and basic features concerning the physics in onedimension. In particular, in the case of classical sp...

    J. P. Boucher in Magnetic Excitations and Fluctuations II (1987)

  8. No Access

    Chapter and Conference Paper

    Narrow and Broad Solitons in the Antiferromagnetic Chains of CsCoCl3 and TMMC

    The two quasi one-dimensional (10) compounds CsCoCl3 and (CH3)4NMnCl3 (TMMC) are almost ideal systems in which to study soliton excitations. Both they have antiferromagnetic (AF) couplings in the chains and at lo...

    J. P. Boucher, L. P. Regnault, A. Pires… in Magnetic Excitations and Fluctuations (1984)

  9. No Access

    Chapter

    Magnetic Solitons in Antiferromagnetic Chains: Neutron and NMR Experiments in TMMC

    Different experimental results obtained on the one-dimensional antiferromagnetic compound TMMC – neutron diffraction, 3-d ordering temperature and nuclear spin-lattice relaxation time – are discussed in terms ...

    J. P. Boucher, L. P. Regnault in Recent Developments in Condensed Matter Physics (1981)

  10. No Access

    Chapter and Conference Paper

    Evidence for Soliton Excitations in the One-Dimensional Antiferromagnet TMMC

    The magnetic compound (CD3)4NMnCl3(TMMC) represents a very good realization of a one-dimensional antiferromagnetic system with a spin S = 5/2 [1]. Calculations [2] have shown that dipolar interactions must induce...

    L. P. Regnault, J. P. Boucher, J. Rossat-Mignod, J. P. Renard… in Physics in One Dimension (1981)