engleski

Modalities of Self-Organized Charge Response in Low Dimensional Systems

Self-organization is a concept, which recognizes a network pattern of organization with internal non-linear relationships as the basic feature of life and reality. In low dimensional systems, self-organized structures could form ordered or glass phases. In the former with the order of commensurability N &#61603 ; ; 3, they can be viewed as topological defects with associated excitations like solitons and charge domain wall pairs or stripes in the background domain structure. In the latter with N &#61603 ; ; 4, they can be recognized as phasons of charge and spin density waves in a disordered background potential. In this lecture I will present some of modalities of self-organized charge response in low dimensional systems, like divers organic and quantum spin systems, studied by the low-frequency (10 mHz &#8211 ; ; 1 MHz) dielectric spectroscopy. Particular emphasis will be devoted to weak ferromagnetic state in &#61547 ; ; -(BEDT-TTF)2Cu[N(CN)2]Cl, Peierls-Mott insulating state in deuterated copper-DCNQI and to charge density wave in Sr14Cu24O41.

self-organization; low diemsnional systems; dielectric response

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