One-dimensional antiferromagnet

Observables, rate of change of, 477 Occupation number operator, 54 for particles of momentum k, 505 One-antiparticle state, 540 One-dimensional antiferromagnetic Kronig-Penney problem, 747 One-negaton states, 659 One-particle processes Green s function for computing amplitudes under vacuum conditions, 619... 

Cu(tfd)2 units by 0.015 A in an orthogonal direction to fill in the space vacated by the TTF molecules. This existence of a progressive dimerization in a regular chain of molecules of spin 1/2 along with the observed activated temperature dependence of the magnetic susceptibility below Tc has been interpreted in terms of a spin-Peierls instability77-78) in a one-dimensional antiferromagnetically coupled chain. 

It has been shown by Villeneuve et al (55) that the experimentally measured temperature dependence of the magnetic susceptibility can be well described by a theoretical model based on the assumption of one-dimensional antiferromagnetic... 

Fig. 34. One-dimensional antiferromagnetic arrays. The solid and open circles denote magnetic and non-magnetic atoms respectively. The arrows give the spin directions. Cases (a) and (b) will scatter neutrons of opposite polarization differently, Case (c) is intensitive to the polarization of the incident beam [after Ref. (57)]...

R661 H. Kikuchi, Possibility of a Gapless Chiral State of Frustrated S=1 One-Dimensional Antiferromagnetic CaV204 , Bussei Kenkyu, 2000, 75,143... 

For many years, it was believed that the qualitative behaviour of one-dimensional chains with ions of differing spin would be the same. However, in 1983 Haldane made the prediction that one-dimensional antiferromagnetic chains with integer spin would behave differently from those with half-integer spin. 21 xhe former were predicted to show a... 

In the last seven years, the demonstration of one-dimensional antiferromagnetic behavior in [(CHs)4N][MnCl3] (TMMC) (125), CsMnCl3(H20)z (378), and related systems (see Part II) has led to increased experimental and theoretical work in the field (49, 199, 297). More recently, a number of one-dimensional systems with ferromagnetic coupling have been reported, in particular, CsNip3(16, 257, 384, 385) and RbFeCl3(l, 311). 

Type of paramagnetic susceptibility BF = Bonner-Fischer type one-dimensional antiferromagnet, SDW = Spin density wave, SP = Spin Peierls. 

Ba2MnSc3 600--SO Farad probably one-dimensional antiferromagnet 71G33, Fig. 30... 

NH4)2MnFs sc 120-2.0 one dimensional antiferromagnetic chain, s=7.5K. J determined 73K12,... 

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