Opera: Glass physics

2012 ◽  
Vol 8 (6) ◽  
pp. 440-441 ◽  
Author(s):  
Christian Gnodtke ◽  
Abigail Klopper
Keyword(s):  
Glass Physics

scholarly journals Pinching a glass reveals key properties of its soft spots

2020 ◽  
Vol 117 (10) ◽  
pp. 5228-5234 ◽  
Author(s):  
Corrado Rainone ◽  
Eran Bouchbinder ◽  
Edan Lerner
Keyword(s):  
Density Of States ◽  
Effective Temperature ◽  
Nonequilibrium Thermodynamic ◽  
Characteristic Size ◽  
Length Scale ◽  
Low Frequencies ◽  
Glass Physics ◽  
Physical Information ◽  
Key Questions

It is now well established that glasses feature quasilocalized nonphononic excitations—coined “soft spots”—, which follow a universal ω4 density of states in the limit of low frequencies ω. All glass-specific properties, such as the dependence on the preparation protocol or composition, are encapsulated in the nonuniversal prefactor of the universal ω4 law. The prefactor, however, is a composite quantity that incorporates information both about the number of quasilocalized nonphononic excitations and their characteristic stiffness, in an apparently inseparable manner. We show that by pinching a glass—i.e., by probing its response to force dipoles—one can disentangle and independently extract these two fundamental pieces of physical information. This analysis reveals that the number of quasilocalized nonphononic excitations follows a Boltzmann-like law in terms of the parent temperature from which the glass is quenched. The latter, sometimes termed the fictive (or effective) temperature, plays important roles in nonequilibrium thermodynamic approaches to the relaxation, flow, and deformation of glasses. The analysis also shows that the characteristic stiffness of quasilocalized nonphononic excitations can be related to their characteristic size, a long sought-for length scale. These results show that important physical information, which is relevant for various key questions in glass physics, can be obtained through pinching a glass.

scholarly journals Facets of glass physics

Physics Today ◽  
2016 ◽  
Vol 69 (1) ◽  
pp. 40-46 ◽  
Author(s):  
Ludovic Berthier ◽  
Mark D. Ediger
Keyword(s):  
Glass Physics

Glass physics: still not transparent

Physics World ◽  
1999 ◽  
Vol 12 (12) ◽  
pp. 54-54 ◽  
Author(s):  
Kurt Binder ◽  
Jorg Baschnagel ◽  
Walter Kob ◽  
Wolfgang Paul
Keyword(s):  
Glass Physics

Glass-physics

2015 ◽  
Author(s):  
P. Lukowicz ◽  
A. Poxrucker ◽  
J. Weppner ◽  
B. Bischke ◽  
J. Kuhn ◽  
...  
Keyword(s):  
Glass Physics

scholarly journals Coexistence of the Kondo effect and spin glass physics in Fe-doped NbS2

2020 ◽  
Vol 32 (16) ◽  
pp. 165803
Author(s):  
H Nobukane ◽  
Y Tabata ◽  
T Kurosawa ◽  
D Sakabe ◽  
S Tanda
Keyword(s):  
Spin Glass ◽  
Kondo Effect ◽  
Glass Physics

Preface: Special issue ‘Unifying Concepts in Glass Physics VII’

2020 ◽  
Vol 2020 (10) ◽  
pp. 104001
Author(s):  
C Patrick Royall ◽  
Robert L Jack ◽  
John Russo ◽  
Chiara Cammarota ◽  
Juan P Garrahan ◽  
...  
Keyword(s):  
Special Issue ◽  
Glass Physics
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