Emergent Kondo behavior from gauge fluctuations in spin liquids

Abstract

Kondo effect is a prominent quantum phenomenon describing the many-body screening of a local magnetic impurity. Here, we reveal a new type of non-magnetic Kondo behavior generated by gauge fluctuations in strongly-correlated baths. We show that a non-magnetic bond defect not only introduces the potential scattering but also locally enhances the gauge fluctuations. The local gauge fluctuations further mediate a pseudospin exchange interaction that produces an asymmetric Kondo fixed point in low-energy. The gauge-fluctuation-induced Kondo phenomena do not exhibit the characteristic resistivity behavior of conventional Kondo effect, but display a non-monotonous temperature dependence of thermal conductivity as well as an anisotropic pseudospin correlation. Moreover, with its origin from gauge fluctuations, the Kondo features can be regarded as promising indicators for identifying quantum spin liquids. Our work advances fundamental knowledge of novel Kondo phenomena in strongly-correlated systems, which have no counterparts in thermal baths within the single-particle description.

arXiv comment14 pages, 5 figures, PRL in press

References in corpus (36)

• Quantum Spin Liquids
• Quantum Orders and Symmetric Spin Liquids
• Modeling disorder in graphene
• Tunable Kondo Effect in Graphene with Defects
• Sum-rule Conserving Spectral Functions from the Numerical Renormalization Group
• The Flux-Phase of the Half-Filled Band
• Deconfined quantum critical points: symmetries and dualities
• On the stability of U(1) spin liquids in two dimensions
• Non-abelian symmetries in tensor networks: a quantum symmetry space approach
• Renormalization-group study of Anderson and Kondo impurities in gapless Fermi systems
• Kondo Quantum Criticality of Magnetic Adatoms in Graphene
• The Physics of Kondo Impurities in Graphene
• Many-body spin Berry phases emerging from the $\pi$-flux state: antiferromagnetic/valence-bond-solid competition
• Possible Quantum Spin Liquid States on the Triangular and Kagome Lattices
• Unifying Description of Competing Orders in Two Dimensional Quantum Magnets
• Charged fermions coupled to ${\mathbb{Z}}_2$ gauge fields: Superfluidity, confinement and emergent Dirac fermions
• Monte Carlo Study of Lattice Compact Quantum Electrodynamics with Fermionic Matter: the Parent State of Quantum Phases
• Kondo effect in three-dimensional Dirac and Weyl systems
• Spontaneous formation of a non-uniform chiral spin liquid in moat-band lattices
• Kondo effect in carbon nanotube quantum dots with spin-orbit coupling
• Absence of Bose condensation on lattices with moat bands
• Statistical transmutation in Floquet driven optical lattices
• Scanning tunneling spectroscopy of a magnetic atom on graphene in the Kondo regime
• Chern_simons Theory of the Anisotropic Quantum Heisenberg Antiferromagnet on a Square Lattice
• Kondo screening in a charge-insulating spinon metal
• Kondo Signatures of a Quantum Magnetic Impurity in Topological Superconductors
• Fermionic spinon theory of square lattice spin liquids near the Néel state
• Kondo Effect with Weyl Semimetal Fermi Arcs
• Fermionization of Bosons in a Flat Band
• Topological spin ordering via Chern-Simons superconductivity
• Impurity-induced resonant spinon zero modes in Dirac quantum spin-liquids
• Antiferromagnetic magnons from fractionalized excitations
• Helical spin liquid in a triangular XXZ magnet from Chern-Simons theory
• An Anderson impurity interacting with the helical edge states in a quantum spin Hall insulator
• The thermal conductance of a two-channel Kondo model
• Numerical study of Kondo impurity models with strong potential scattering: - reverse Kondo effect and antiresonance -

Cited by in corpus (6)

• Magnetic Impurity as a Local Probe of the U(1) Quantum Spin Liquid with Spinon Fermi Surface
• Theory of competing Chern-Simons orders and emergent phase transitions
• Chern-Simons superconductors and their instabilities
• Phase-dependent cross sections of deuteron-triton fusion in dichromatic intense fields with high-frequency limit
• Fluctuating Fractionalized Spins in Quasi Two-dimensional Magnetic V0.85PS3
• Development of long-range phase coherence on the Kondo lattice