Pseudo Landau levels, negative strain resistivity, and enhanced thermopower in twisted graphene nanoribbons
arXiv:2006.09048 · doi:10.1103/PhysRevResearch.3.033139
Abstract
As a canonical response to the applied magnetic field, the electronic states of a metal are fundamentally reorganized into Landau levels. In Dirac metals, Landau levels can be expected without magnetic fields, provided that an inhomogeneous strain is applied to spatially modulate electron hoppings in a similar way as the Aharonov-Bohm phase. We here predict that a twisted zigzag nanoribbon of graphene exhibits strain-induced pseudo Landau levels of unexplored but analytically solvable dispersions at low energies. The presence of such dispersive pseudo Landau levels results in a negative strain resistivity characterizing the -dimensional chiral anomaly if partially filled and can greatly enhance the thermopower when fully filled.
13 pages, 7 figures; More data and figures added compared to v1; a new author added; published version
References in corpus (22)
- The electronic properties of graphene
- Energy Gaps in Graphene Nanoribbons
- Half-Metallic Graphene Nanoribbons
- The Chiral Magnetic Effect
- Dielectric function, screening, and plasmons in 2D graphene
- Unconventional Integer Quantum Hall effect in graphene
- A tight-binding approach to uniaxial strain in graphene
- Carrier transport in 2D graphene layers
- Thermoelectric and Magnetothermoelectric Transport Measurements of Graphene
- Chiral anomaly and transport in Weyl metals
- The thermopower and Nernst Effect in graphene in a magnetic field
- Screening induced temperature dependent transport in 2D graphene
- Chiral anomaly from strain-induced gauge fields in Dirac and Weyl semimetals
- Inhomogeneous Weyl and Dirac semimetals: Transport in axial magnetic fields and Fermi arc surface states from pseudo Landau levels
- Algebraic solution of a graphene layer in a transverse electric and perpendicular magnetic fields
- Gaussian deformations in graphene ribbons: flowers and confinement
- Quantum oscillations without magnetic field
- Pseudo-Landau levels of Bogoliubov quasiparticles in strained nodal superconductors
- Strain-induced pseudomagnetic field and quantum oscillations in kagome crystals
- Quantum Hall States in Graphene from Strain-Induced Nonuniform Magnetic Fields
- Quantum oscillations and Dirac-Landau levels in Weyl superconductors
- Twist-induced magnon Landau levels in honeycomb magnets