Strange metal without magnetic criticality

Abstract

A fundamental challenge to our current understanding of metals is the frequent observation of qualitative departures from Fermi liquid behavior. The standard view attributes such non-Fermi liquid phenomena to the scattering of electrons off quantum critical fluctuations of an underlying order parameter. While the possibility of non-Fermi liquid behavior isolated from the border of magnetism has long been speculated, no experimental confirmation has been made. Here we report on the observation of a strange metal region in the absence of a magnetic instability in an ultrapure single crystal. In particular, we show that the heavy fermion superconductor $\beta$-YbAlB${}_4$ forms a possible phase with strange metallic behavior across an extensive pressure regime, distinctly separated from a high-pressure magnetic quantum phase transition by a Fermi liquid phase.

36 pages, 13 figures

References in corpus (7)

• Fermi-liquid instabilities at magnetic quantum phase transitions
• Quantum Criticality in Heavy Fermion Metals
• Weak magnetism and non-Fermi liquids near heavy-fermion critical points
• Fractionalized Fermi liquids
• Quantum Valence Criticality as Origin of Unconventional Critical Phenomena
• Layered Kondo lattice model for quantum critical beta-YbAlB4
• β-YbAlB4: a critical nodal metal

Cited by in corpus (42)

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• Cesium-involved electron transfer and electron-electron interaction in high-pressure metallic CsPbI3
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• Kondo destruction in a quantum paramagnet with magnetic frustration
• Kondo hybridization and quantum criticality in $\beta$-YbAlB${}_4$ by laser-ARPES
• Classification of materials with divergent magnetic Grüneisen parameter
• Topological basis for understanding the behavior of the heavy-fermion metal $\beta -\mathrm{YbAl}{\mathrm{B}}_4$ under application of magnetic field and pressure
• Unveiling Quadrupolar Kondo Effect in the Heavy Fermion Superconductor PrV${}_2$Al${}_{20}$
• Effect of Anisotropic Hybridization in YbAlB${}_4$ Probed by Linear Dichroism in Core-Level Hard X-ray Photoemission Spectroscopy
• Field-angle-resolved landscape of non-Fermi-liquid behavior in the quasi-kagome Kondo Lattice CeRhSn
• Thermoelectric signature of quantum critical phase in a doped spin liquid candidate
• Observation of a Critical Charge Mode in a Strange Metal
• Skyrmion defects and competing singlet orders in a half-filled antiferromagnetic Kondo-Heisenberg model on the honeycomb lattice
• Zero-Field Ambient-Pressure Quantum Criticality in the Stoichiometric Non-Fermi Liquid System CeRhBi
• Microscopic Observation of Heavy Quasiparticle Formation in the Intermediate Valence Compound EuNi${}_2$P${}_2$: ${}^{31}$P NMR Study
• Toward a topological scenario for high-temperature superconductivity of copper oxides
• Pressure-induced magnetic transition exceeding 30 K in the Yb-based heavy fermion superconductor $\beta$-YbAlB${}_4$
• A Local Quantum Phase Transition in YFe${}_2$Al${}_{10}$
• High temperature antiferromagnetism in Yb based heavy fermion systems proximate to a Kondo insulator
• Unveiling the Physics of the Mutual Interactions in Paramagnets
• Strongly correlated Fermi systems as a new state of matter
• T/B scaling without quasiparticle mass divergence: YbCo2Ge4
• Theory Perspective: SCES 2016
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• Universal $T/B$ scaling behavior of heavy fermion compounds
• Quantum critical behaviour and Lifshitz transition in intermediate valence $\alpha$-YbAlB${}_4$
• Quantum Criticality and Inhomogeneous Magnetic Order in Fe-doped alpha-YbAlB4
• Dualism of the 4f electrons and high-temperature antiferromagnetism of the heavy-fermion compound YbCoC${}_2$
• On anomalous temperature dependence of relaxation rate measured by \muSR in α-YbAl_{0.986}Fe_{0.014}B_4
• Non-Divergent Grüneisen Parameter in Quantum Critical Quasicrystal Yb${}_{15}$Al${}_{34}$Au${}_{51}$: Reflection of Robustness of Quantum Criticality under Pressure
• Non-Fermi liquid transport and strong mass enhancement near the nematic quantum critical point in FeSe${}_x$Te${}_{1-x}$ thin films
• Kondo breakdown transitions and phase-separation tendencies in valence-fluctuating heavy-fermion materials
• Ultra spin liquid in $\mathrm{L}{\mathrm{u}}_3\mathrm{C}{\mathrm{u}}_2\mathrm{S}{\mathrm{b}}_3{\mathrm{O}}_{14}$
• Quantum oscillations of the Stoner susceptibility: theory
• Stranger than Metals
• Strong in-plane anisotropy in the electronic structure of fixed-valence $\beta$-LuAlB${}_4$
• Strange Metals from Quantum Geometric Fluctuations of Interfaces