Download Organic Molecular Aggregates: Electronic Excitation and by H. C. Wolf (auth.), Professor Dr. Peter Reineker, Professor PDF

By H. C. Wolf (auth.), Professor Dr. Peter Reineker, Professor Dr. Dr. h. c. Hermann Haken, Professor Dr. Hans Christoph Wolf (eds.)

This quantity includes the talks provided on the foreign Symposium on digital Excitations and interplay procedures in natural Molecular Aggre­ gates which used to be held at Schloss Elmau, Bavaria, Germany from June five to June 10, 1983. within the contemporary years the research of natural fabrics has built swiftly and has resulted in the development of fabrics with fascinating right­ ties. the invention of hugely undertaking and superconducting natural fabrics is among the purposes for the large raise in examine acti­ vity during this box. attention-grabbing functions were discovered or look pos­ sible, resembling the appliance of natural fabrics in electrophotography. The conductivity of natural polymers will be various inside a wide variety by means of doping and such fabrics were used to build an natural battery. a while in the past it was once instructed that natural glasses and polymers might be used as stor­ age fabrics in computing device expertise. With the advance of guidance tech­ niques and smooth equipment of research, for instance, excessive answer and picosecond spectroscopy, a large number of experimental info is offered not just for the carrying out fabrics but additionally for natural semiconductors and in­ sulators. With this fast accumulation of experimental fabric the microscopic theoretical figuring out couldn't continue pace.

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By H. C. Wolf (auth.), Professor Dr. Peter Reineker, Professor Dr. Dr. h. c. Hermann Haken, Professor Dr. Hans Christoph Wolf (eds.)

This quantity includes the talks provided on the foreign Symposium on digital Excitations and interplay procedures in natural Molecular Aggre­ gates which used to be held at Schloss Elmau, Bavaria, Germany from June five to June 10, 1983. within the contemporary years the research of natural fabrics has built swiftly and has resulted in the development of fabrics with fascinating right­ ties. the invention of hugely undertaking and superconducting natural fabrics is among the purposes for the large raise in examine acti­ vity during this box. attention-grabbing functions were discovered or look pos­ sible, resembling the appliance of natural fabrics in electrophotography. The conductivity of natural polymers will be various inside a wide variety by means of doping and such fabrics were used to build an natural battery. a while in the past it was once instructed that natural glasses and polymers might be used as stor­ age fabrics in computing device expertise. With the advance of guidance tech­ niques and smooth equipment of research, for instance, excessive answer and picosecond spectroscopy, a large number of experimental info is offered not just for the carrying out fabrics but additionally for natural semiconductors and in­ sulators. With this fast accumulation of experimental fabric the microscopic theoretical figuring out couldn't continue pace.

Show description

Read or Download Organic Molecular Aggregates: Electronic Excitation and Interaction Processes Proceedings of the International Symposium on Organic Materials at Schloss Elmau, Bavaria, June 5–10, 1983 PDF

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Additional info for Organic Molecular Aggregates: Electronic Excitation and Interaction Processes Proceedings of the International Symposium on Organic Materials at Schloss Elmau, Bavaria, June 5–10, 1983

Example text

Below the gap two SPs may exist at the same frequency ~ • One of them is an ordinary SP with k~ ~/C and the other is a short-wavelength additional SP. The appearance of an additional surface wave may be considered in a certain sense as an effect of spatial dispersion due to long-ranee dipole-dipole interaction. Note that all the above said is valid, if we neglect the short-range polarization correlations which lead to the k dependence of dielec tric permea bili ty E1 (W. k) . 1). It is clear that one more surface wave appears in such a case and therefore three SPs of the same frequency may exist.

2). kr d2 r. kr d2k tcn == ~ ~k e Iter) I « A ' (2:Jt)1 provided that IvC 1« 1. Retardation effects in (4) have been neglected. The phYSical nature of the righthand side of (4) is rather Simple. ) appears in the equation of motion for which apparently coincides with the right-hand side of (4). The factor (1+E z)/t 2 in (5) arises because of image forces effects. +1). /(E z +1)]d and not d. We shall seek the solutions of (8) which correspond to the local states of the size rn« L. For the sake of simplicity we shall consider here only the one-dimensional case, when ~(k) = C(k x ) 2:n:S(k y), P(k)= P(k x ) 2x8(ky ) Since the function ~(k) goes rapidly to zero at ~l> L- 1 , the main contribution to the right-hand side of (4) is determined by integration over the narrow region I q-k I ~ L- 1« r~1, where the Fourier component P(k) is smoothly varying.

Himpsel, N. E. Koch: Phys. Stat. Sol. A. Feldmann and E E. Koch: to be published 16 U. W. Cooper: Rev. Mod. Phys. 40, 441 (1968) 17 E E. Koch, M. Iwan, K. S. Bagus: Chern. Phys. 59,249 (1981) 18 M. E. Koch: Solid State Connn. 31,261 (1079) 19 M. E. C. E. J. Himpsel: Solid State Comm. li, 57 (1980) 20 E. Tegeler, M. E. Koch: J Electr. Spectr. Relat. Phenom. : R. Taube Z Chern. J. -H. E. Koch: Chern. Phys. E. Koch: Proc. VII Internat. Conf. E. L. 27 28 29 30 31 32 33 34 35 36 37 46 Dehmer, D. Dill: Symp.

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