By George Gruner
Discusses the theoretical and experimental scenario of 2 novel forms of damaged symmetry floor states of metals, cost, and spin density waves. DLC: cost density waves.
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Extra info for Density Waves in Solids (Frontiers in Physics)
Example text
Physica 143B, 174 (1986). 2. G, Travaglini and P. Waehter, Solid State Conwn. 37, 599 (1981). 3. H. P. Geserich, et al. Physica J43B, 198 (1986), 4. P. Bruesh, et al. Phys. Rev. B12, 219 (1975). 5. J. C. Scott, et al. Phys. Rev. BIO, 3131 (1979). 6. D. Johnston, et at. Solid State Comm. 53, 5 (1985). 7. K. Carneiro, et ai. Phys. Rev. 113, 4758 (1976). 8. J. P. Pouget and P. Comes, In "Charge Density Waves in Solids" Eds. L. P. Gor'kov and G. Gruner, North Holland 1987. 9. S. Sugai, Physica 1438, 195 (1986).
2. The magnetic susceptibility is of the Pauli type (Jerome and Schultz, 1982) and is weakly temperature dependent down to low temperatures where the phase transition occurs. The parameters o»p and x can then be used, together with the free electron expressions for these parameters, to extract the parameters which characterize the single particle states, Fermi velocity vf, Fermi energy e f , and the density of states n(e f ). 2 Organic Linear Chain Compounds 27 Figure 2,7, The schematic crystal structure of (tetramethyltetraselenafulvaIene)2PF6, (TMTSF)2PF6.
The second term on the right hand side is an effective force associated with the lattice dynamics and arises as a consequence of eleetron-phonon interactions. The ionic potential g(2Mcaq/ft) Qq gives, through Eq. 6), a density fluctuation 36 3 Charge Density Wave Transition and Ground State: Mean Field Theory and with this mean field approximation Eq. 14) reads The above equation of motion gives a renormalized phonon frequency As discussed in Chapter 1, for a one-dimensional electron gas x({j,T) has its maximum value at q — 2kF.