Elastic Quantum Criticality in Nematics and Altermagnets via the Elasto-Caloric Effect
arXiv:2502.14033 · doi:10.1103/nlpj-1dt5
Abstract
The coupling between electronic nematic degrees of freedom and acoustic phonons is known to significantly alter the universality class of a nematic quantum critical point (QCP). While non-Fermi-liquid behaviour emerges in the absence of lattice coupling, the inclusion of interactions with acoustic phonons results in observables such as heat capacity and single-particle scattering rate exhibiting only subleading non-analytic corrections to dominant Fermi-liquid terms. In this work, we demonstrate that the elastocaloric effect (ECE) -- the adiabatic temperature change under varying strain -- and the thermal expansion deviate from this pattern. Despite lattice coupling weakening the singularity of the ECE, it preserves a dominant non-Fermi-liquid temperature dependence. By drawing analogies between nematic systems and field-tuned altermagnets, we further show that similar responses are expected for the ECE near altermagnetic QCPs. We classify the types of piezomagnetic couplings and analyse the regimes arising from field-tuned magnetoelastic interactions. Our findings are shown to be consistent with the scaling theory for elastic quantum criticality and they further emphasize the suitability of the ECE as a sensitive probe near QCPs.
arXiv comment21 pages, 9 figures
References in corpus (54)
- Nematic order in iron superconductors - who is in the driver's seat?
- Altermagnetism: spin-momentum locked phase protected by non-relativistic symmetries
- Crystal Hall effect in Collinear Antiferromagnets
- Nematic Fermi Fluids in Condensed Matter Physics
- Observation of the Anomalous Hall Effect in a Collinear Antiferromagnet
- Multifunctional Antiferromagnetic Materials with Giant Piezomagnetism and Noncollinear Spin Current
- Quantum Theory of a Nematic Fermi Fluid
- Quantum phase transitions of metals in two spatial dimensions: II. Spin density wave order
- Quantum phase transitions of metals in two spatial dimensions: I. Ising-nematic order
- Spontaneous anomalous Hall effect arising from an unconventional compensated magnetic phase in a semiconductor
- Universally diverging Grueneisen parameter and the magnetocaloric effect close to quantum critical points
- Low energy effective theory of Fermi surface coupled with U(1) gauge field in 2+1 dimensions
- Prediction of unconventional magnetism in doped FeSb2
- Effects of nematic fluctuations on the elastic properties of iron arsenide superconductors
- Ubiquitous signatures of nematic quantum criticality in optimally doped Fe-based superconductors
- Enhancement of superconductivity near a nematic quantum critical point
- Are non-Fermi-liquids stable to Cooper pairing?
- Prediction of low-Z collinear and noncollinear antiferromagnetic compounds having momentum-dependent spin splitting even without spin-orbit coupling
- Quenched disorder and vestigial nematicity in the pseudo-gap regime of the cuprates
- Spin-group symmetry in magnetic materials with negligible spin-orbit coupling
- Soft Fermi Surfaces and Breakdown of Fermi Liquid Behavior
- Superconductivity and non-Fermi liquid behavior near a nematic quantum critical point
- Structural quantum criticality and superconductivity in iron-based superconductor Ba(Fe1-xCox)2As2
- Landau Theory of Altermagnetism
- Nematic susceptibility of hole- and electron-doped BaFe2As2 iron-based superconductors from shear modulus measurements
- Magnetic octupoles as the order parameter for unconventional antiferromagnetism
- Altermagnetism with Non-collinear Spins
- Topological transition from nodal to nodeless Zeeman splitting in altermagnets
- Thermodynamic Evidence for a Two-Component Superconducting Order Parameter in SrRuO
- Enumeration of spin-space groups: Towards a complete description of symmetries of magnetic orders
- Signatures of Electronic Nematic Phase at Isotropic-Nematic Phase Transition
- Elastocaloric determination of the phase diagram of SrRuO
- Lattice effects on nematic quantum criticality in metals
- Electrical resistivity near Pomeranchuk instability in two dimensions
- Altermagnetism and magnetic groups with pseudoscalar electron spin
- Unveiling Hidden Orders: Magnetostriction as a Probe of Multipolar-Ordered States
- Superconductor-altermagnet memory functionality without stray fields
- Multiscale quantum criticality: Pomeranchuk instability in isotropic metals
- Thermal expansion and Grüneisen parameters of Ba(Fe1-xCox)2As2 - a thermodynamic quest for quantum criticality
- Multipolar magnetism in d-orbital systems: Crystal field levels, octupolar order, and orbital loop currents
- Elastic coupling and spin-driven nematicity in iron-based superconductors
- Normal state properties of quantum critical metals at finite temperature
- AC Elastocaloric effect as a probe for thermodynamic signatures of continuous phase transitions
- Magnetic octupole tensor decomposition and second-order magnetoelectric effect
- Superconductivity near a nematic quantum critical point -- the interplay between hot and lukewarm regions
- Theory of electric, magnetic, and toroidal polarizations in crystalline solids with applications to hexagonal lonsdaleite and cubic diamond
- Dynamic paramagnon-polarons in altermagnets
- Spin pumping in an altermagnet/normal metal bilayer
- Symmetry invariants and classes of quasiparticles in magnetically ordered systems having weak spin-orbit coupling
- Electron self-energy near a nematic quantum critical point
- Modelling Magnetic Multipolar Phases in Density Functional Theory
- Constraints on the superconducting state of SrRuO from elastocaloric measurements
- Specific Heat of a Quantum Critical Metal
- Elastocaloric signatures of symmetric and antisymmetric strain-tuning of quadrupolar and magnetic phases in DyB2C2