Universal Form of the Low-Energy (2 to 10 meV) Vibrational Spectrum of Glasses

Malinovsky, V. K.; Novikov, V. N.; Parshin, P. P.; Sokolov, Alexei P.; Zemlyanov, M. G.

doi:10.1209/0295-5075/11/1/008

Cited by 250 publications

(93 citation statements)

References 15 publications

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“…If it is assumed that excitations in disordered systems have no well-defined wave vector q, then they can contribute to the light scattering spectra. 201 The first order Raman intensity I() is written in the form…”

Section: D14 Do Boson Peaks Measure Cluster Dynamics or Cage Rattlmentioning

confidence: 99%

“…197 However, a comparison with inelastic neutron scattering data indicated that the boson peak is related to an excess in the vibrational density of states. 201 Several models have been proposed to explain the boson peak. One model 193 assumed that the glass is composed of nanometric scale inhomogeneities, and g() is the density of vibrational excitations localized in the inhomogeneities.…”

Section: D14 Do Boson Peaks Measure Cluster Dynamics or Cage Rattlmentioning

confidence: 99%

See 1 more Smart Citation

Relaxation in glassforming liquids and amorphous solids

Angell

Ngai

McKenna

et al. 2000

Journal of Applied Physics

2,119

1,876

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The field of viscousliquid and glassysolid dynamics is reviewed by a process of posing the key questions that need to be answered, and then providing the best answers available to the authors and their advisors at this time. The subject is divided into four parts, three of them dealing with behavior in different domains of temperature with respect to the glass transition temperature, Tg,and a fourth dealing with "short time processes. " The first part tackles the high temperature regime T>Tg, in which the system is ergodic and the evolution of the viscousliquid toward the condition at Tg is in focus. The second part deals with the regime T∼Tg, where the system is nonergodic except for very long annealing times, hence has time-dependent properties (aging and annealing). The third part discusses behavior when the system is completely frozen with respect to the primary relaxation process but in which secondary processes, particularly those responsible for "superionic" conductivity, and dopart mobility in amorphous silicon, remain active. In the fourth part we focus on the behavior of the system at the crossover between the low frequency vibrational components of the molecular motion and its high frequency relaxational components, paying particular attention to very recent developments in the short time dielectric response and the high Qmechanical response. The field of viscous liquid and glassy solid dynamics is reviewed by a process of posing the key questions that need to be answered, and then providing the best answers available to the authors and their advisors at this time. The subject is divided into four parts, three of them dealing with behavior in different domains of temperature with respect to the glass transition temperature, T g , and a fourth dealing with ''short time processes.'' The first part tackles the high temperature regime TϾT g , in which the system is ergodic and the evolution of the viscous liquid toward the condition at T g is in focus. The second part deals with the regime TϳT g , where the system is nonergodic except for very long annealing times, hence has time-dependent properties ͑aging and annealing͒. The third part discusses behavior when the system is completely frozen with respect to the primary relaxation process but in which secondary processes, particularly those responsible for ''superionic'' conductivity, and dopart mobility in amorphous silicon, remain active. In the fourth part we focus on the behavior of the system at the crossover between the low frequency vibrational components of the molecular motion and its high frequency relaxational components, paying particular attention to very recent developments in the short time dielectric response and the high Q mechanical response.

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Section: D14 Do Boson Peaks Measure Cluster Dynamics or Cage Rattlmentioning

confidence: 99%

Section: D14 Do Boson Peaks Measure Cluster Dynamics or Cage Rattlmentioning

confidence: 99%

Relaxation in glassforming liquids and amorphous solids

Angell

Ngai

McKenna

et al. 2000

Journal of Applied Physics

2,119

1,876

View full text Add to dashboard Cite

show abstract

“…На температурній кривій теплопровідності k(T) стекол нижче 1К типовою є залежність близька до T 2 , вище 1К в околі 10 К виявлено температурно-незалежне плато і далі , вище плато, спостерігається монотонний ріст теплопровідності [1][2][3][4][5][6][7][8][9][10]. Дослідження k(T) для склоподібного As2S3 були спочатку проведені в околі плато [2] , а в температурному інтервалі понад плато представлені в [3,5].…”

Section: низькотемпературна теплопровідність і бозонний пік в склоподunclassified

Low-temperature thermal conductivity and boson peak in the glassy g-As<sub>2</sub>S<sub>3</sub>

Mitsa¹,

Фегер²,

Петрецький³

et al. 2016

Sci.Herald.Uzh.Univ.Ser.Phys

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“…The glass is known to exhibit a variety of photoinduced effects [1][2][3][4][5][6][7]. The most famous may be the defect formation and radiation compaction in silica glasses which is now commercially utilized for producing Bragggrating fibres.…”

Section: Photoinduced Changes In Glassesmentioning

confidence: 99%

Barrier–cluster–heating model and photoinduced phenomena in chalcogenide glasses

Banik

Lukovičová

Sarkar

et al. 2014

AIP Conference Proceedings

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Barrier-cluster-heating model of disordered semiconductors was originated by synthesis of the barriercluster model (which was described in the previous works of authors) and of the local heating model (published short time ago). The synthesis of these two models brought synergic effect enabling deeper understanding of physical processes in amorphous semiconductors. The article gives a new view on the essence of some optical and photoinduced effects in chalcogenide glasses on the base of the barrier-cluster-heating model.

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Universal Form of the Low-Energy (2 to 10 meV) Vibrational Spectrum of Glasses

Cited by 250 publications

References 15 publications

Relaxation in glassforming liquids and amorphous solids

Relaxation in glassforming liquids and amorphous solids

Low-temperature thermal conductivity and boson peak in the glassy g-As<sub>2</sub>S<sub>3</sub>

Barrier–cluster–heating model and photoinduced phenomena in chalcogenide glasses

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