Uniaxial stress effect on the quasi-one-dimensional Kondo lattice CeCo${}_2$Ga${}_8$

Abstract

Quantum critical phenomena in the quasi-one-dimensional limit remains an open issue. We report the uniaxial stress effect on the quasi-one-dimensional Kondo lattice CeCo${}_2$Ga${}_8$ by electric transport and AC heat capacity measurements. CeCo${}_2$Ga${}_8$ is speculated to sit in close vicinity but on the quantum-disordered side of a quantum critical point. Upon compressing the $c$ axis, parallel to the Ce-Ce chain, the onset of coherent Kondo effect is enhanced. In contrast, the electronic specific heat diverges more rapidly at low temperature when the intra-chain distance is elongated by compressions along {a} or {b} axes. These results suggest that a tensile intra-chain strain (${\epsilon }_c>0$) pushes CeCo${}_2$Ga${}_8$ closer to a quantum critical point, while a compressive intra-chain strain (${\epsilon }_c<0$) likely causes departure. Our work provides a rare paradigm of manipulation near a quantum critical point in a quasi-1D Kondo lattice by uniaxial stress, and paves the way for further investigations on the unique feature of quantum criticality in the quasi-1D limit.

arXiv comment5 pages, 4 figures

References in corpus (29)

• Fermi-liquid instabilities at magnetic quantum phase transitions
• Quantum Criticality in Heavy Fermion Metals
• Locally critical quantum phase transitions in strongly correlated metals
• The break up of heavy electrons at a quantum critical point
• Onset of antiferromagnetism in heavy fermion metals
• Quantum criticality
• Hidden Magnetism and Quantum Criticality in the Heavy Fermion Superconductor CeRhIn5
• Hall-effect evolution across a heavy-fermion quantum critical point
• Universally diverging Grueneisen parameter and the magnetocaloric effect close to quantum critical points
• Extreme magnetic field-boosted superconductivity
• Two-dimensional fluctuations at the quantum-critical point of CeCu_{6-x}Au_x
• Quasiparticle mass enhancement approaching optimal doping in a high-Tc superconductor
• Scaling of magnetic fluctuations near a quantum phase transition
• Strange metal behavior in a pure ferromagnetic Kondo lattice
• Global Magnetic Phase Diagram and Local Quantum Criticality in Heavy Fermion Metals
• Destruction of Kondo effect in cubic heavy fermion compound Ce3Pd20Si6
• Quantum-critical phase out of frustrated magnetism in a strongly correlated metal
• Multiple quantum phase transitions in a heavy fermion antiferromagnet
• Fermi surface reconstruction and multiple quantum phase transitions in the antiferromagnet CeRhIn${}_5$
• Ferromagnetic Quantum Criticality in the Quasi-One-Dimensional Heavy Fermion Metal YbNi4P2
• Heavy Fermion Quantum Criticality and Destruction of the Kondo Effect in a Nickel Oxypnictide
• Heavy fermion behavior in the quasi-one-dimensional Kondo lattice CeCo2Ga8
• Pressure-tuned quantum criticality in the antiferromagnetic Kondo semi-metal CeNi${}_{2-\delta }$As${}_2$
• Nematic quantum criticality in an Fe-based superconductor revealed by strain-tuning
• Realization of Kondo chain in CeCo${}_2$Ga${}_8$
• Quantum Fluctuations in the Non-Fermi Liquid System CeCo${}_2$Ga${}_8$ Investigated Using $\mu$SR
• Pristine quantum criticality in a Kondo semimetal
• Heat-capacity measurements under uniaxial pressure using a piezo-driven device
• AC-Calorimetry at High Pressure and Low Temperature

Cited by in corpus (2)

• Abnormal planar Hall effect and disentanglement of incoherent and coherent transport in a Kondo lattice
• Tensile and compressive strain tuning of a Kondo lattice