Rotational Grüneisen ratio: a probe for quantum criticality in anisotropic systems
arXiv:2412.09047 · doi:10.1103/PhysRevB.111.045123
Abstract
The Grüneisen ratio and its magnetic analog, the magnetic Grüneisen ratio , are powerful probes to study the nature of quantum phase transitions. Here, we propose a Grüneisen parameter, the rotational Grüneisen ratio , by introducing the orientation of the external field as a control parameter. We investigate of the highly anisotropic paramagnets CeRhSn and CeIrSn by measuring the rotational magnetocaloric effect in a wide range of temperatures and magnetic fields. We find that the data of both compounds are scaled by using the same critical exponents and the field-invariant critical field angle. Remarkably, the scaling function for the data reveals the presence of highly anisotropic quantum criticality that develops as a function of the easy-axis component of the magnetic field from the quantum critical line. This paper provides a thermodynamic approach to detect and identify magnetic quantum criticality in highly anisotropic systems.
arXiv comment6 pages, 3 figures (main text) + 12 pages, 10 figures (Supplemental Material)
References in corpus (19)
- Fermi-liquid instabilities at magnetic quantum phase transitions
- Quantum Criticality in Heavy Fermion Metals
- Quantum Spin Ice: A Search for Gapless Quantum Spin Liquids in Pyrochlore Magnets
- Universally diverging Grueneisen parameter and the magnetocaloric effect close to quantum critical points
- Powerlaw optical conductivity with a constant phase angle in high Tc superconductors
- Extreme magnetic field-boosted superconductivity
- Quantum criticality in a metallic spin liquid
- Frustration and quantum criticality
- Characteristic signatures of quantum criticality driven by geometrical frustration
- Grüneisen parameter studies on heavy fermion quantum criticality
- Strong coupling theory of heavy fermion criticality
- High-resolution alternating-field technique to determine the magnetocaloric effect of metals down to very low temperatures
- Zero-field Quantum Critical Point in CeCoIn
- Uniaxial stress tuning of geometrical frustration in a Kondo lattice
- Antiferromagnetic correlations in strongly valence fluctuating CeIrSn
- Classification of materials with divergent magnetic Grüneisen parameter
- Field-rotational magnetocaloric effect: A new experimental technique for accurate measurement of the anisotropic magnetic entropy
- Field-angle-resolved landscape of non-Fermi-liquid behavior in the quasi-kagome Kondo Lattice CeRhSn
- Reinforcement of superconductivity by quantum critical fluctuations of metamagnetism in UTe