Low-Temperature Anomalies in Strong and Fragile Glass Formers

Sokolov, Alexei P.; Calemczuk, R.; Salce, B.; Kisliuk, A.; Quitmann, D.; Duval, E.

doi:10.1103/physrevlett.78.2405

Cited by 150 publications

(132 citation statements)

References 30 publications

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“…this excess should not be confused with a Boson-peak as it is identified in glassy systems [41]. These modes have been observed in inelastic neutron scattering [53,54], confirmed and interpreted as two-level systems from light absorption experiments [48,49,50].…”

Section: Discussionsupporting

confidence: 70%

Absence of molecular mobility on nano-second time scales in amorphous ice phases

Koza

Geil

Schober

et al. 2005

Phys. Chem. Chem. Phys.

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Section: Discussionsupporting

confidence: 70%

Absence of molecular mobility on nano-second time scales in amorphous ice phases

Koza

Geil

Schober

et al. 2005

Phys. Chem. Chem. Phys.

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“…Despite this small uncertainty, the evidence for the validity of the gliding triangle model in section III shows that it is able to compete with other explanations of the boson peak 2,3,4,5,6,7,8 . There is no adaptable parameter; one only needs the shear modulus, the atomic mass and the atomic volume.…”

Section: Discussion and Summarymentioning

confidence: 99%

An atomic mechanism for the boson peak in metallic glasses

Buchenau

Schober

2008

Philosophical Magazine

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The boson peak in metallic glasses is modeled in terms of local structural shear rearrangements. Using Eshelby's solution of the corresponding elasticity theory problem (J. D. Eshelby, Proc. Roy. Soc. A241, 376 (1957)), one can calculate the saddle point energy of such a structural rearrangement. The neighbourhood of the saddle point gives rise to soft resonant vibrational modes. One can calculate their density, their kinetic energy, their fourth order potential term and their coupling to longitudinal and transverse sound waves.

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“…It presents a bump at the temperature called T M , T M = 11.2 K. This is the anomalous behavior that is well known to occur in the specific heat of glasses at low temperature. [25][26][27][28][29][30] It is not expected to happen in materials that obey the Debye law-crystalline solids. It is driven by the presence of additional phonon states in the glassy system.…”

Section: Resultsmentioning

confidence: 99%

Influence of temperature and excitation procedure on the athermal behavior of Nd3+-doped phosphate glass: Thermal lens, interferometric, and calorimetric measurements

Astrath

Barboza

Medina

et al. 2009

Journal of Applied Physics

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2009Influence of temperature and excitation procedure on the athermal behavior of Nd(3+)-doped phosphate glass: Thermal lens, interferometric, and calorimetric measurements JOURNAL OF APPLIED PHYSICS, v.106, n.7, 2009 http://producao.usp.br/handle/BDPI/16575 In this work, thermal and optical properties of the commercial Q-98 neodymium-doped phosphate glass have been measured at low temperature, from 50 to 300 K. The time-resolved thermal lens spectrometry together with the optical interferometry and the thermal relaxation calorimetry methods were used to investigate the glass athermal characteristics described by the temperature coefficient of the optical path length change, ds / dT. The thermal diffusivity was also determined, and the temperature coefficients of electronic polarizability, linear thermal expansion, and refractive index were calculated and used to explain ds / dT behavior. ds / dT measured via thermal lens method was found to be zero at 225 K. The results provided a complete characterization of the thermo-optical properties of the Q-98 glass, which may be useful for those using this material for diode-pumped solid-state lasers.

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Low-Temperature Anomalies in Strong and Fragile Glass Formers

Cited by 150 publications

References 30 publications

Absence of molecular mobility on nano-second time scales in amorphous ice phases

Absence of molecular mobility on nano-second time scales in amorphous ice phases

An atomic mechanism for the boson peak in metallic glasses

Influence of temperature and excitation procedure on the athermal behavior of Nd3+-doped phosphate glass: Thermal lens, interferometric, and calorimetric measurements

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