Electric-field-induced spin spiral state in bilayer zigzag graphene nanoribbons
arXiv:2102.06468 · doi:10.1088/1361-648X/abc4f3
Abstract
We investigated the emergence of spin spiral ground state induced by the electric field in the bilayer zigzag graphene nanoribbons for the ferromagnetic edge states. To do that, we employed the generalized Bloch theorem to create flat spiral alignments for all the magnetic moments of carbon atoms at the edges within a constraint scheme approach. While the small ribbon width can preserve the ferromagnetic ground state, the large one shows the spiral ground state starting from a certain value of the electric field. We also pointed out that the spiral ground state is caused by the reduction of spin stiffness. In this case, the energy scale exhibits a subtle nature that can only be considered at the low temperature. For the last discussion, we also revealed that the spin spiral ground state appears more rapidly when the thickness increases. Therefore, we justify that the large ribbon width and large thickness can generate many spiral states induced by the electric field.
References in corpus (16)
- Electric Field Effect in Atomically Thin Carbon Films
- Two-Dimensional Gas of Massless Dirac Fermions in Graphene
- Graphene Photonics and Optoelectronics
- Emergence of magnetism in graphene materials and nanostructures
- Magnetic Correlations at Graphene Edges
- Crystal and Magnetic Structures in Layered, Transition Metal Dihalides and Trihalides
- The 2014 Magnetism Roadmap
- Will Zigzag Graphene Nanoribbon Turn to Half Metal under Electric Field?
- Stability of edge states and edge magnetism in graphene nanoribbons
- Magnetic ordering and multiferroicity in MnI
- Domain Wall Magnetoresistance of Co Nanowires
- Implementation of Generalized Bloch Theorem Using Linear Combination of Pseudo-Atomic Orbitals
- First-principles Study of Spiral Spin Density Waves in Monolayer MnCl Using Generalized Bloch Theorem
- Applied electric field on zigzag graphene nanoribbons: reduction of spin stiffness and appearance of spiral spin density waves
- Carrier-induced Antisymmetric-symmetric Tendencies of Spin Stiffness in Zigzag Graphene Nanoribbons
- Possible excited spin density wave states in zigzag graphene nanoribbons