Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Complex low-frequency dielectric relaxation of the charge-density wave state in the (2.5(OCH3)(2)DCNQI)(2)Li
Autore:
Pinteric, M; Vuletic, T; Tomie, S; von Schutz, JU;
Indirizzi:
Inst Phys, Zagreb 10001, Croatia Inst Phys Zagreb Croatia 10001Inst Phys, Zagreb 10001, Croatia Univ Maribor, Fac Civil Engn, Maribor 2000, Slovenia Univ Maribor Maribor Slovenia 2000 ac Civil Engn, Maribor 2000, Slovenia Univ Stuttgart, Inst Phys, D-70550 Stuttgart, Germany Univ Stuttgart Stuttgart Germany D-70550 hys, D-70550 Stuttgart, Germany
Titolo Testata:
EUROPEAN PHYSICAL JOURNAL B
fascicolo: 3, volume: 22, anno: 2001,
pagine: 335 - 341
SICI:
1434-6028(200108)22:3<335:CLDROT>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
SPIN-DENSITY; GLASS-TRANSITION; LOW-TEMPERATURE; PHASE; DYNAMICS; (2,5(OCH3)(2)DCNQI)(2)LI; POLYACETYLENE; DEPENDENCE; SOLITONS; SYSTEMS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Pinteric, M Inst Phys, POB 304, Zagreb 10001, Croatia Inst Phys POB 304 Zagreb Croatia 10001 Zagreb 10001, Croatia
Citazione:
M. Pinteric et al., "Complex low-frequency dielectric relaxation of the charge-density wave state in the (2.5(OCH3)(2)DCNQI)(2)Li", EUR PHY J B, 22(3), 2001, pp. 335-341

Abstract

We report a detailed characterization of an unique 2- and 4-fold commensurate charge density wave (CDW) state. in single crystals of the organic conductor (2.5(OCH3)(2)DCNQI)(2)Li by means of low-frequency (0.1 Hz-1 MHz) dielectric spectroscopy. We show that in addition to the narrow, Debye-like relaxation mode of strength Delta epsilon approximate to 10(7) with Arrhenius-like resistive decay, associated with long wavelength phason excitations, a new mode of weaker strength Delta epsilon approximate to 10(6) appears below 40 K and broadens with decrease in temperature. Below 25 K the mean relaxation time of the new mode saturates, whereas the Debye mode continues, gradual slowing down with weaker temperature dependence. again similar to the DC conductivity, We attribute the new process to short wavelength CDW excitations that become dominant once the free carrier density is substantially reduced at low temperatures.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/09/20 alle ore 17:45:23