Spin-valley Hall transport induced by spontaneous symmetry breaking in half-filled zero Landau level of bilayer graphene

Abstract

Intrinsic Hall conductivity, emerging when chiral symmetry is broken, is at the heart of future low energy consumption devices because it can generate non-dissipative charge neutral current. A symmetry breaking state is also induced by electronic correlation even for the centro-symmetric crystalline materials. However, generation of non-dissipative charge neutral current by intrinsic Hall conductivity induced by such spontaneous symmetry breaking is experimentally elusive. Here we report intrinsic Hall conductivity and generation of a non-dissipative charge neutral current in a spontaneous antiferromagnetic state of zero Landau level of bilayer graphene, where spin and valley contrasting Hall conductivity has been theoretically predicted. We performed nonlocal transport experiment and found cubic scaling relationship between the local and nonlocal resistance, as a striking evidence of the intrinsic Hall effect. Observation of such spontaneous Hall transport is a milestone toward understanding the electronic correlation effect on the non-dissipative transport. Our result also paves a way toward electrical generation of a spin current in non-magnetic graphene via coupling of spin and valley in this symmetry breaking state combined with the valley Hall effect.

References in corpus (48)

• Spintronics: Fundamentals and applications
• The Valley Hall Effect in MoS2 Transistors
• Hofstadter's butterfly in moire superlattices: A fractal quantum Hall effect
• Quantum Hall Ferromagnetism in Graphene
• Thermoelectric and Magnetothermoelectric Transport Measurements of Graphene
• Spin-Orbit Proximity Effect in Graphene
• Spontaneous Quantum Hall States in Chirally-stacked Few-Layer Graphene Systems
• Electrical control of the valley Hall effect in bilayer MoS2 transistors
• Generation and detection of pure valley current by electrically induced Berry curvature in bilayer graphene
• Coulomb-driven broken-symmetry states in doubly gated suspended bilayer graphene
• Gate-tunable Topological Valley Transport in Bilayer Graphene
• Broken symmetry states and divergent resistance in suspended bilayer graphene
• Transport Spectroscopy of Symmetry-Broken Insulating States in Bilayer Graphene
• The zero-energy state in graphene in a high magnetic field
• The thermopower and Nernst Effect in graphene in a magnetic field
• Giant Nonlocality near the Dirac Point in Graphene
• Dissipative Quantum Hall Effect in Graphene near the Dirac Point
• Many-body instability of Coulomb interacting bilayer graphene: RG approach
• Room temperature spin Hall effect in graphene/MoS${}_2$ van der Waals heterostructures
• Graphene integer quantum Hall effect in the ferromagnetic and paramagnetic regimes
• Quantum Anomalous Hall State in Bilayer Graphene
• Electron interactions in graphene in a strong magnetic field
• Spontaneous symmetry breaking and Lifshitz transition in bilayer graphene
• Symmetry breaking of the zero energy Landau level in bilayer graphene
• Spontaneously gapped ground state in suspended bilayer graphene
• Evidence for a Spin Phase Transition at ν=0 in Bilayer Graphene
• Gap opening in the zeroth Landau level of graphene
• Chemical Potential and Quantum Hall Ferromagnetism in Bilayer Graphene
• Low density ferromagnetism in biased bilayer graphene
• Minimum Conductivity and Evidence for Phase Transitions in Ultra-clean Bilayer Graphene
• Canted antiferromagnetic phase of the $\nu =0$ quantum Hall state in bilayer graphene
• Extremely large magnetoresistance in few-layer graphene/boron-nitride heterostructures
• Intrinsic valley Hall transport in atomically thin MoS2
• Theory of the Magnetic-Field-Induced Insulator in Neutral Graphene
• Accurate Gap Determination in Monolayer and Bilayer Graphene/h-BN Moire Superlattices
• Antiferromagnetic state in bilayer graphene
• Transport Gap in Suspended Bilayer Graphene at Zero Magnetic Field
• Spin-Polarized to Valley-Polarized Transition in Graphene Bilayers at $\nu =0$ in High Magnetic Fields
• Origins of Nonlocality near the Dirac Point in Graphene
• Evidence for a quantum-spin-Hall phase in graphene decorated with Bi2Te3 nanoparticles
• Broken-symmetry $\nu =0$ quantum Hall states in bilayer graphene: Landau level mixing and dynamical screening
• Effective Landau Level Diagram of Bilayer Graphene
• Quantum Hall ferromagnetic phases in the Landau level N=0 of a graphene bilayer
• Thermoelectric and thermal transport in bilayer graphene systems
• Metallic Phase and Temperature Dependence of the $\nu =0$ Quantum Hall State in Bilayer Graphene
• Transverse Thermoelectric Conductivity of Bilayer Graphene in Quantum Hall Regime
• Spin-Valley Coherent Phases of the $\nu =0$ Quantum Hall State in Bilayer Graphene
• Critical point for the CAF-F phase transition at charge neutrality in bilayer graphene

Cited by in corpus (3)

• Long-range nontopological edge currents in charge-neutral graphene
• Emergent inhomogeneity and non-locality in a graphene field-effect transistor on a near-parallel moire superlattice of transition metal dichalcogenides
• Temperature-induced phase transitions in the quantum Hall magnet of bilayer graphene