Zacharias, Mario, Paul, Indranil and Garst, Markus ORCID: 0000-0001-5390-3316 (2015). Quantum Critical Elasticity. Phys. Rev. Lett., 115 (2). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1079-7114

Full text not available from this repository.

Abstract

We discuss elastic instabilities of the atomic crystal lattice at zero temperature. Because of long-range shear forces of the solid, at such transitions the phonon velocities vanish, if at all, only along certain crystallographic directions, and, consequently, the critical phonon fluctuations are suppressed to a lower dimensional manifold and governed by a Gaussian fixed point. In the case of symmetry-breaking elastic transitions, a characteristic critical phonon thermodynamics arises that is found, e.g., to violate Debye's T-3 law for the specific heat. We point out that quantum critical elasticity is triggered whenever a critical soft mode couples linearly to the strain tensor. In particular, this is relevant for the electronic Ising-nematic quantum phase transition in a tetragonal crystal as discussed in the context of certain cuprates, ruthenates, and iron-based superconductors.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Zacharias, MarioUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Paul, IndranilUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Garst, MarkusUNSPECIFIEDorcid.org/0000-0001-5390-3316UNSPECIFIED
URN: urn:nbn:de:hbz:38-398894
DOI: 10.1103/PhysRevLett.115.025703
Journal or Publication Title: Phys. Rev. Lett.
Volume: 115
Number: 2
Date: 2015
Publisher: AMER PHYSICAL SOC
Place of Publication: COLLEGE PK
ISSN: 1079-7114
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
STRUCTURAL PHASE-TRANSITIONS; IRON-BASED SUPERCONDUCTORS; GRUNEISEN-PARAMETER; CRITICAL-DYNAMICS; CRITICAL-POINTS; INSTABILITIES; ORDERMultiple languages
Physics, MultidisciplinaryMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/39889

Downloads

Downloads per month over past year

Altmetric

Export

Actions (login required)

View Item View Item