Aharonov–Bohm interferences from local deformations in graphene

@article{Juan2011AharonovBohmIF,
  title={Aharonov–Bohm interferences from local deformations in graphene},
  author={Fernando de Juan and Alberto Cortijo and Mar'ia A. H. Vozmediano and Andr{\'e}s Cano},
  journal={Nature Physics},
  year={2011},
  volume={7},
  pages={810-815}
}
Mechanical deformations in graphene have been shown to be associated with ‘fictitious’ magnetic fields. Theoretical work now suggests that these fields can give rise to an analogue of the Aharonov–Bohm effect, a phenomenon that might be used to sensitively detect small deformations of the graphene sheet. 

Figures from this paper

Space dependent Fermi velocity in strained graphene.
TLDR
It is demonstrated that strained or corrugated samples will have a space-dependent Fermi velocity in either approach that can affect the interpretation of local probe experiments in graphene.
Vortex degeneracy lifting and Aharonov-Bohm-like interference in deformed photonic graphene.
TLDR
Topological vortex degeneracy lifting and Aharonov-Bohm-like interference from local deformation in a photonic honeycomb lattice are demonstrated and may provide insight into the understanding of similar phenomena in other graphene-like materials and structures.
Graphene membrane as a pressure gauge
Straining graphene results in the appearance of a pseudo-magnetic field which alters its local electronic properties. Applying a pressure difference between the two sides of the membrane causes it to
Breakdown of continuum mechanics for nanometre-wavelength rippling of graphene
It is known that graphene exhibits natural ripples with characteristic lengths of around 10 nm. But when it is stretched across nanometre-scale trenches that form in a reconstructed copper surface,
Generalized Hamiltonian for a graphene subjected to arbitrary in-plane strains
The interplay between the linear elastic deformation up to 20% and the unique electronic properties of graphene nanostructures offers an attractive prospect to manipulate their properties by strain.
Observation of unconventional splitting of Landau levels in strained graphene
In strained graphene, lattice deformation can create pseudo-magnetic fields and result in zero-field Landau level-like quantization. In the presence of an external magnetic field, valley-polarized
Direct observation of magneto-electric Aharonov-Bohm effect in moir\'e-scale quantum paths of minimally twisted bilayer graphene
Direct observation of magneto-electric Aharonov-Bohm effect in moiré-scale quantum paths of minimally twisted bilayer graphene Yi-Wen Liu, Ya-Ning Ren, Chen-Yue Hao, Lin He Center for Advanced
Perfect transmission and Aharanov-Bohm oscillations in topological insulator nanowires with nonuniform cross section
Topological insulator nanowires with uniform cross section, combined with a magnetic flux, can host both a perfectly transmitted mode and Majorana zero modes. Here we consider nanowires with ripple
Quantum Transport in Graphene in Presence of Strain-Induced Pseudo-Landau Levels
We report on mesoscopic transport fingerprints in disordered graphene caused by strain-field induced pseudomagnetic Landau levels (pLLs). Efficient numerical real space calculations of the Kubo
Potential-driven eddy current in rippled graphene nanoribbons
It is well known that an eddy current will be induced in a conductor subject to a varying magnetic field. Here we propose another mechanism of generating nano-scale eddy current in rippled graphene
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 77 REFERENCES
Energy gaps and a zero-field quantum Hall effect in graphene by strain engineering
Owing to the fact that graphene is just one atom thick, it has been suggested that it might be possible to control its properties by subjecting it to mechanical strain. New analysis indicates not
Singular elastic strains and magnetoconductance of suspended graphene
Graphene membranes suspended off electric contacts or other rigid supports are prone to elastic strain, which is concentrated at the edges and corners of the samples. Such a strain leads to an
Pseudomagnetic fields and ballistic transport in a suspended graphene sheet.
TLDR
In a clean system the two-terminal conductance of the sample is reduced below the ballistic limit and is almost totally suppressed at low carrier concentrations in samples under tension, but residue disorder restores a small finite conductivity.
Strong suppression of weak localization in graphene.
TLDR
Graphene weak-localization magnetoresistance is strongly suppressed and, in some cases, completely absent, due to mesoscopic corrugations of graphene sheets which can cause a dephasing effect similar to that of a random magnetic field.
Generating quantizing pseudomagnetic fields by bending graphene ribbons
We analyze the mechanical deformations that are required to create uniform pseudomagnetic fields in graphene. It is shown that, if a ribbon is bent in-plane into a circular arc, this can lead to
Gauge field induced by ripples in graphene
We study the effects of quenched height fluctuations (ripples) in graphene on the density of states (DOS). We show that at strong ripple disorder, a divergence in the DOS can lead to an ordered
Aharonov-Bohm oscillations in the local density of states
The scattering of electrons with inhomogeneities produces modulations in the local density of states of a metal. We show that electron interference contributions to these modulations are affected by
Gauge fields in graphene
The physics of graphene is acting as a bridge between quantum field theory and condensed matter physics due to the special quality of the graphene quasiparticles behaving as massless two dimensional
Graphene as an electronic membrane
We investigate the membrane aspect of graphene and its impact on the electronic properties. We show that rippling generates spatially varying electrochemical potential that is proportional to the
Strain-Induced Pseudo–Magnetic Fields Greater Than 300 Tesla in Graphene Nanobubbles
Straining Graphene's Electronic States The conduction electrons in graphene, single sheets of graphite, can have very high mobilities. Under the influence of an applied magnetic field, a series of
...
1
2
3
4
5
...