Spin-glass approach to low-temperature anomalies in glasses

• Verfasst von: Horstmann, Uta [VerfasserIn]
• Verfasst von: Kühn, Reimer [VerfasserIn]
• Titel: Spin-glass approach to low-temperature anomalies in glasses
• Verf.angabe: Uta Horstmann, Reimer Kühn, Institut für Theoretische Physik, Universität Heidelberg, Philosophenweg 19, 69120 Heidelberg, Germany
• E-Jahr: 1999
• Jahr: 23 April 1999
• Umfang: 3 S.
• Fussnoten: Gesehen am 06.03.2018
• Titel Quelle: Enthalten in: Physica / B
• Ort Quelle: Amsterdam : Elsevier, 1988
• Jahr Quelle: 1999
• Band/Heft Quelle: 263/264(1999), Seite 290-292
• ISSN Quelle: 1873-2135
• DOI: doi:10.1016/S0921-4526(98)01473-2
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Glasses
• Sach-SW: Low-temperature anomalies
• Sach-SW: Tunneling systems
• K10plus-PPN: 1570442479

Abstract

We discuss a spin-glass-type approach to the physics of structural glasses, which leads to a class of models that exhibit both glassy low-temperature phases and double- and single-well configurations in their potential energy landscape. The low-temperature anomalies characteristic of amorphous systems are reproduced, and within our model the universality issue can be illuminated. We consider the interaction between localized excitations and phonons, and we present a general expression for the dynamic susceptibility, from which dynamic properties such as the internal friction can be calculated.