Electronic materials with nanoscale curved geometries

P Gentile, M Cuoco, OM Volkov, ZJ Ying… - Nature …, 2022 - nature.com
As the dimensions of a material shrink from an extended bulk solid to a nanoscale structure,
size and quantum confinement effects become dominant, altering the properties of the …

Emergent ferromagnetism near three-quarters filling in twisted bilayer graphene

AL Sharpe, EJ Fox, AW Barnard, J Finney, K Watanabe… - Science, 2019 - science.org
When two sheets of graphene are stacked at a small twist angle, the resulting flat
superlattice minibands are expected to strongly enhance electron-electron interactions …

Quantum imaging of current flow in graphene

JP Tetienne, N Dontschuk, DA Broadway, A Stacey… - Science …, 2017 - science.org
Since its first discovery in 2004, graphene has been found to host a plethora of unusual
electronic transport phenomena, making it a fascinating system for fundamental studies in …

Widefield quantum microscopy with nitrogen-vacancy centers in diamond: Strengths, limitations, and prospects

SC Scholten, AJ Healey, IO Robertson… - Journal of Applied …, 2021 - pubs.aip.org
ABSTRACT A dense layer of nitrogen-vacancy (NV) centers near the surface of a diamond
can be interrogated in a widefield optical microscope to produce spatially resolved maps of …

Scanning gate microscopy in a viscous electron fluid

BA Braem, FMD Pellegrino, A Principi, M Röösli… - Physical Review B, 2018 - APS
We measure transport through a Ga [Al] As heterostructure at temperatures between 32 mK
and 30 K. Increasing the temperature enhances the electron-electron scattering rate and …

Simultaneous voltage and current density imaging of flowing electrons in two dimensions

L Ella, A Rozen, J Birkbeck, M Ben-Shalom… - Nature …, 2019 - nature.com
A variety of physical phenomena associated with nanoscale electron transport often results
in non-trivial spatial voltage and current patterns, particularly in nonlocal transport regimes …

Imaging work and dissipation in the quantum Hall state in graphene

A Marguerite, J Birkbeck, A Aharon-Steinberg… - Nature, 2019 - nature.com
Topology is a powerful recent concept asserting that quantum states could be globally
protected against local perturbations,. Dissipationless topologically protected states are …

Specular electron focusing between gate-defined quantum point contacts in bilayer graphene

J Ingla-Aynés, ALR Manesco, TS Ghiasi… - Nano Letters, 2023 - ACS Publications
We report multiterminal measurements in a ballistic bilayer graphene (BLG) channel, where
multiple spin-and valley-degenerate quantum point contacts (QPCs) are defined by …

[HTML][HTML] Electron wave and quantum optics in graphene

H Chakraborti, C Gorini, A Knothe, MH Liu… - Journal of Physics …, 2024 - iopscience.iop.org
In the last decade, graphene has become an exciting platform for electron optical
experiments, in some aspects superior to conventional two-dimensional electron gases …

A two-dimensional Dirac fermion microscope

P Bøggild, JM Caridad, C Stampfer, G Calogero… - Nature …, 2017 - nature.com
The electron microscope has been a powerful, highly versatile workhorse in the fields of
material and surface science, micro and nanotechnology, biology and geology, for nearly 80 …