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Thermal hysteresis in the dielectric response of the charge density wave system o-TaS3


Starešinić, Damir; Dominko, Damir; Lunkenheimer, Peter; Loidl, Alois
Thermal hysteresis in the dielectric response of the charge density wave system o-TaS3 // Journal of physics. Condensed matter, 20 (2008), 44; 445231-1 doi:10.1088/0953-8984/20/44/445231 (međunarodna recenzija, članak, znanstveni)


Naslov
Thermal hysteresis in the dielectric response of the charge density wave system o-TaS3

Autori
Starešinić, Damir ; Dominko, Damir ; Lunkenheimer, Peter ; Loidl, Alois

Izvornik
Journal of physics. Condensed matter (0953-8984) 20 (2008), 44; 445231-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Hysteresis; dielectric spectroscopy; CDW; TaS3

Sažetak
The low frequency dielectric response of the charge density wave (CDW) system o-TaS3 exhibits a rate-independent hysteresis on temperature cycling in a very wide temperature range below the CDW transition temperature. The ac conductivity, related to the CDW dynamics, is higher on heating than on cooling, while the dc conductivity of residual free carriers is lower, indicating a nontrivial relation between the two of them. Both the amplitude and the relaxation time of the low frequency relaxation process observed in the temperature region of the hysteresis are higher on heating, with similar temperature dependence to the hysteresis in the dc resistivity. The results indicate that the hystereses in ac and dc conductivities are mainly coupled through the free carrier screening of the CDW phase and not through the conversion of free carriers into phase defects.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

Napomena
Art. no. 445231.



POVEZANOST RADA


Projekt / tema
035-0352827-2842 - Kompleksni modulirani sistemi: nova osnovna stanja, defekti i magnetski efekti (Katica Biljaković, )

Ustanove
Institut za fiziku, Zagreb

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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