Strain-induced Landau levels of Majorana fermions in an anisotropically interacting Kitaev model on a honeycomb lattice

Abstract

The energy structure of an anisotropically interacting Kitaev model on a honeycomb lattice under triaxial strain is investigated. A numerical calculation shows that quantized states appear in the low-energy region, even when the anisotropy of the interaction is rather strong. Their energies are proportional to the square root of the quantum number and the quantized state at zero energy appears only on one sublattice. These findings indicate the emergence of the strain-induced Landau levels of Majorana fermions, which is also confirmed by an analytical calculation. These Landau levels are stable, when the direction of triaxial strain is slightly changed from the bond direction.

10 pages, 7 figures; published version. Effects of the direction of triaxial strain are added

References in corpus (14)

• $\alpha$-RuCl3: a Spin-Orbit Assisted Mott Insulator on a Honeycomb Lattice
• Exact results for spin dynamics and fractionization in the Kitaev Model
• Successive magnetic phase transitions in $\mathbf{\alpha }$-RuCl${}_3$: XY-like frustrated magnet on the honeycomb lattice
• Na2IrO3 as a spin-orbit-assisted antiferromagnetic insulator with a 340 meV gap
• Anisotropic Ru3+ 4d5 magnetism in the alpha-RuCl3 honeycomb system: susceptibility, specific heat and Zero field NMR
• Importance of anisotropic exchange interactions in honeycomb iridates. Minimal model for zigzag antiferromagnetic order in Na${}_2$IrO${}_3$
• Electronic Structure of the Kitaev Material $\alpha$-${\text{RuCl}}_3$ Probed by Photoemission and Inverse Photoemission Spectroscopies
• Electronic structure of graphene hexagonal flake subjected to triaxial stress
• Magnetic anisotropy reversal driven by structural symmetry-breaking in monolayer α-RuCl3
• STM as a single Majorana detector of Kitaev's chiral spin liquid
• Scanning tunneling spectroscopy of Majorana zero modes in a Kitaev spin liquid
• Degeneracy doubling and sublattice polarization in strain-induced pseudo-Landau levels
• Sachdev-Ye-Kitaev type physics in the strained Kitaev honeycomb model
• Gapless state of interacting Majorana fermions in a strain-induced Landau level

Cited by in corpus (1)

• Antiferromagnetic Order and Magnetic Frustration in the Honeycomb Heavy-Fermion System Ce(Pt${}_{1-x}$Pd${}_x$)${}_6$Al${}_3$: ${}^{27}$Al and ${}^{195}$Pt NMR Studies