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Landau diamagnetism

The CMC and boronated samples showed a Landau diamagnetism which changed over to almost the Langevln diamagnetism with progressive boron doping (8). The results were Interpreted in terms of the equation... [Pg.507]

Xl is the Landau diamagnetism in a first approximation, formula (5) may be corrected by a factor m/m where m is the effective mass of the considered electron m/m being much smaller than one, Xl may be neglected. [Pg.142]

The magnetic susceptibility is also derived from the electron density. There are two contributions (19) the Pauli paramagnetism and the Landau diamagnetism. The former is given by... [Pg.112]

We [85] also investigated the evolution at ambient pressure of the magnetic susceptibility of the NiOj array in these samples the data are shown in Fig. 18 together with p(T) to locate T(. The Ln -ion contribution was obtained from LnAlOj perovskites and subtracted out. Both Landau diamagnetism and Van Vleck paramagnetism are small in magnitude compared with the measured X(T), so no correction was made for these contributions. [Pg.48]

The s electrons may be considered as free electrons. In such case, the orbital diamagnetism is the Landau term... [Pg.141]

These experiments showed clearly that n states evolve into the quasi-Landau resonances. In higher resolution experiments, Gay et a/.18 and Castro et al.19 showed that it was in fact the highest energy diamagnetic states which evolved into... [Pg.151]

Landau derivation of the diamagnetism no longer applies, and contributions from the orbital motion of the electrons may be expected. Here, as before, the free electron model only reproduces the broad trends of the data. Both model and the sparse data are essentially flat at concentrations above two mole % the free electron model should not be used at lower concentrations. The magnitudes agree as well as for the pure solid metal. [Pg.114]

Holle, A., Wiebusch, G., Main, J., Hager, B., Rottke, H., and Welge, K.H. (1986). Diamagnetism of the hydrogen atom in the quasi-Landau regime, Phys. Rev. Lett. 56, 2594-2597. [Pg.393]

Although classical mechanics does not provide a diamagnetic contribution to the susceptibility from collective electrons (induced internal currents and surface currents cancel one another out), Landau (383) discovered that the running waves of quantum mechanics are modified by H to give a diamagnetic susceptibility —1/3 that of the paramagnetic susceptibility. Thus... [Pg.41]

One characteristic feature of the behavior of Xs(T) for organic metals is illustrated in Fig. 4. In contrast to ordinary metals, Xs(X) increases quite substantially with temperature from (say) 60 to 300 K. This increase is strongest for the most one-dimensional compound, TTF-TCNQ [53], and becomes progressively weaker for (TMTSF)2C104 [54], (3-(BEDT-TTF)2I3 (a genuine two-dimensional compound) [25,26], and the more three-dimensional compound (TSeT)2Cl [18] (also, unpublished results of M. Mil-jak and B. Hilti). For HMTSF-TCNQ [33] such a discussion is complicated by the presence of Landau-Peierls diamagnetism from small pockets of electrons and holes, although estimates of Xs(T) have been made by Soda... [Pg.371]

Conduction electrons in broad bands of s- and p-like character contribute to all three quantities (sp). The Landau orbital diamagnetism (L) of these electrons is frequently considered only in the free-electron approximation, and taken care of by introducing a factor of two thirds in front of jp, whilst represents only the core diamagnetism. More localized non-s-like electrons in narrow bands give temperature-dependent contributions. In addition to the spin part (d) of the susceptibility, which is noticeable at the nucleus via core polarization (and finally Fermi-contact interaction) or via dipolar interaction (dip), van Vleck type induced orbital contributions of the magnetic susceptibility lead to orbital (orb) contributions of K and l/T, and eventually also to quadrupolar contributions (Q) of l/Ti- In this chapter we will use the symbol a, (instead ofH , ) for the hyperfne coupling constant(s) (with units of Oep. or Oe/electron) in the equation... [Pg.77]


See other pages where Landau diamagnetism is mentioned: [Pg.504]    [Pg.271]    [Pg.198]    [Pg.66]    [Pg.77]    [Pg.107]    [Pg.111]    [Pg.324]    [Pg.251]    [Pg.358]    [Pg.375]    [Pg.361]    [Pg.405]    [Pg.20]    [Pg.247]    [Pg.312]    [Pg.317]    [Pg.504]    [Pg.271]    [Pg.198]    [Pg.66]    [Pg.77]    [Pg.107]    [Pg.111]    [Pg.324]    [Pg.251]    [Pg.358]    [Pg.375]    [Pg.361]    [Pg.405]    [Pg.20]    [Pg.247]    [Pg.312]    [Pg.317]    [Pg.121]    [Pg.66]    [Pg.143]    [Pg.147]    [Pg.150]    [Pg.209]    [Pg.288]    [Pg.387]    [Pg.481]    [Pg.290]    [Pg.23]    [Pg.43]    [Pg.55]    [Pg.364]    [Pg.377]    [Pg.378]   
See also in sourсe #XX -- [ Pg.374 ]

See also in sourсe #XX -- [ Pg.247 ]




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