Universal explanation of low-temperature glass anomalies

Projektinformationen

GlassUniversality

ID Finanzhilfevereinbarung: 723955

DOI 10.3030/723955

Abgeschlossenes Projekt

EK-Unterschriftsdatum 31 Januar 2017

Startdatum 1 September 2017

Enddatum 28 Februar 2023

Finanziert unter

• EXCELLENT SCIENCE - European Research Council (ERC)

Gesamtkosten € 1 362 125,00

EU-Beitrag € 1 362 125,00

Koordiniert durch

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS
France

Ziel

While amorphous solids constitute most of the solid matter found in Nature, their understanding is much poorer than for
crystalline solids, at the point that most solid state textbooks are entirely focused on crystals. The reason underlying this uncomfortable situation is that amorphous solids display all kind of anomalies with respect to a simple description in terms of phonon excitations around a perfect lattice. In particular, they display an excess of low-frequency vibrational modes, their thermodynamic and transport coefficients behave differently from crystals, they respond non-linearly to arbitrarily small strains, and have highly cooperative dynamics. Traditionally, each of these aspects has been studied independently of the others, by almost distinct communities, and in terms of microscopic elements that are specific to a given material.

The objective of this proposal is to take a different approach and seek a universal explanation of all the anomalies of amorphous solids, in terms of criticality associated with a new phase transition between two distinct glass phases.

This goal is both ambitious and reachable. It is reachable because such a phase transition has just been theoretically predicted to exist on rigorous grounds, in an abstract limit of infinite spatial dimensions; its existence allows one to compute the critical exponents of jamming, in strikingly good agreement with numerical simulations; and the transition has been observed numerically in a realistic model of glass. It is ambitious because it requires to firmly establish the universal nature of the transition, and connect it to the experimentally observed anomalies through concrete analytical and numerical calculations, which will open the way to a direct experimental test. Both tasks require solving a number of difficult conceptual and technical problems. But, if successful, this project could lead to a revolution in our understanding of amorphous solid matter.

Wissenschaftliches Gebiet

• engineering and technology › materials engineering › crystals
• natural sciences › physical sciences › atomic physics
• social sciences › political sciences › political transitions › revolutions

Schlüsselbegriffe

• GlassUniversality

Programm/Programme

• H2020-EU.1.1. - EXCELLENT SCIENCE - European Research Council (ERC) Main Programme

Thema/Themen

• ERC-2016-COG - ERC Consolidator Grant

Aufforderung zur Vorschlagseinreichung

ERC-2016-COG

Finanzierungsplan

ERC-COG - Consolidator Grant

Gastgebende Einrichtung

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS

• Netto-EU-Beitrag: € 1 362 125,00
• Adresse: RUE MICHEL ANGE 3 ; 75794 Paris ; Frankreich
• Region: Ile-de-France › Ile-de-France › Paris
• Aktivitätstyp: Research Organisations
• Gesamtkosten: € 1 362 125,00

Begünstigte (1)

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS

Frankreich

• Netto-EU-Beitrag: € 1 362 125,00
• Adresse: RUE MICHEL ANGE 3 ; 75794 Paris
• Region: Ile-de-France › Ile-de-France › Paris
• Aktivitätstyp: Research Organisations
• Gesamtkosten: € 1 362 125,00