Erratum: Strain-Engineered Graphene Grown on Hexagonal Boron Nitride by Molecular Beam Epitaxy

Summerfield, Alex; Davies, Andrew; Cheng, T.S.; Korolkov, Vladimir V.; Cho, Yong Jin; Mellor, Christopher J.; Foxon, C.T.; Khlobystov, Andrei N.; Watanabe, Kenji; Taniguchi, Takashi; Eaves, L.; Novikov, Sergei V.; Beton, Peter H.

doi:10.1038/srep27047

Cited by 3 publications

(1 citation statement)

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“…As for graphene, defects could be introduced naturally or intentionally while growing. The existence of these defects also attract wide interest [32,33]. In the experiment, strain could be measured and detected by atomic force microscopy.…”

Section: Introductionmentioning

confidence: 99%

Metal-Insulator transition in strained Graphene: A quantum Monte carlo study

Zhang,

Ma,

2021

Preprint

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Motivated by the possibility of a strain tuning effect on electronic properties of graphene, the semimetal-Mott insulator transition process on the uniaxial honeycomb lattice is numerically studied using Determinant Quantum Monte Carlo. As our simulations are based on the half-filled repulsive Hubbard model, the system is sign problem free. Herein, the temperature-dependent DC conductivity is used to characterize electronic transport properties. The data suggest that metallic is suppressed in the presence of strain. More interestingly, within the finite-size scaling study, a novel antiferromagnetic phase arises at around U ∼ Uc. Therefore, a phase diagram generated by the competition between interactions and strain is established, which may help to expand the application of strain effect on graphene.

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Section: Introductionmentioning

confidence: 99%

Metal-Insulator transition in strained Graphene: A quantum Monte carlo study

Zhang,

Ma,

2021

Preprint

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From a ℤ2 topological insulator to a square ribbon: Tuning quantum spin Hall states and conductivity

Zhang

Tian

Fernando

2017

Journal of Applied Physics

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By introducing a new type of strained lattice, one dimensional arm-distorted ribbons, we demonstrate the possibility of opening a bandgap from the originally gapless graphene nanoribbons in the ℤ2 topological class. Typically, a gap opens up due to time-reversal/twofold rotational symmetry breaking; however, our approach leads to a bandgap at the edge of the Brillouin zone while preserving the above symmetries. The calculated gap opening is due to a properly scaled extra hopping interaction, compared to the Kane-Mele Hamiltonian where this hopping is omitted since it is a third neighbor interaction in graphene. For square ribbons with a variable number of legs, we discuss Rashba-related spin-dependent transport properties in the presence and absence of a magnetic flux. In such ribbons, opposite spins travel in opposite directions along the edges, while the spin current in the center leg turns out to be smaller by at least an order of magnitude. In addition, the spin difference between the left and right (say) edges shows plateaus as a function of the magnetic flux. We also discuss transport properties resulting from a non-spin-orbit coupled Hamiltonian which includes third neighbor hopping during a systematic transformation from honeycomb to square ribbons.

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