Napredna pretraga

Pregled bibliografske jedinice broj: 252467

Comment on "Explanation of the Glasslike Anomaly in the Low-Temperature Specific Heat of Incommensurate Phases


Biljaković, Katica
Comment on "Explanation of the Glasslike Anomaly in the Low-Temperature Specific Heat of Incommensurate Phases // Physical Review Letters, 56 (2006), 039603-1 (međunarodna recenzija, članak, znanstveni)


Naslov
Comment on "Explanation of the Glasslike Anomaly in the Low-Temperature Specific Heat of Incommensurate Phases
(In the Low-Temperature Specific Heat of Incommensurate Phases)

Autori
Biljaković, Katica

Izvornik
Physical Review Letters (1079-7114) 56 (2006); 039603-1

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

Ključne riječi
Glass; incommensurate phase; specific heat; anomaly

Sažetak
Recently Cano and Levanyuk proposed an attractive conjecture for explaining the glasslike anomaly in specific heat at low temperature (low-T Cp) of incommensurate (IC) phases based on the phason damping [1]. The universal features of glasses, i.e., the bump in Cp=T3 and the quasilinear (or power-law) contribution Cp  T have also been found in low-T Cp of charge density wave(CDW) systems [2], which can be related to the glass transition in the CDW superstructure observed in dielectric spectroscopy [3]. The CDW pinning resonance, i.e., the phason gap, was considered as analogous to the wellknown boson peak found in glasses [3]. Moreover, we have been able to explain the bump in Cp=T3 using a modified model of the gapped or pinned phason which, however, neglects the phason damping. The explanation of the quasilinear contribution to Cp in terms of damping urged us to check the applicability to CDW systems which can be considered as canonical IC example. In the following we show that the theory presented in [1] is still not suitable to explain the quasilinear contribution to Cp in IC systems.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
0035014

Ustanove
Institut za fiziku, Zagreb

Autor s matičnim brojem:
Katica Biljaković, (76732)

Časopis indeksira:


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