90 citations · 537 across the 25 of their papers we have counts for
26 papers
The First Magic Angle Beyond the Chiral Limit in Twisted Bilayer Graphene
Leonardo A. Navarro-Labastida, Pierre A. Pantaleon, Francisco Guinea +1
We develop a squared-Hamiltonian description of twisted bilayer graphene beyond the chiral limit to explain why the first magic angle remains robust under lattice relaxation, while…
Mode-Resolved Multiband Ballistic Transport and Conductance Thresholds in Bilayer Graphene Junctions
Dan-Na Liu, Jun Zheng, Pierre A. Pantaleon
We study ballistic transport in bilayer graphene junctions and show how electrostatic gating, interlayer bias, and homogeneous strain provide complementary control over electron tr…
Structural and electronic signatures of strain-tunable marginally twisted bilayer graphene
Pei Ouyang, Jiawei Yu, Qian Li +11
Marginally twisted bilayer graphene having small twist angles is predicted to exhibit unique structural and electronic properties, though experimental characterization remains limi…
Mode-selective cloaking and phase-matching cavity resonances in bilayer graphene transport
Dan-Na Liu, Jun Zheng, Pierre A. Pantaleon
We study ballistic electron transport through electrostatic barriers in AB-stacked bilayer graphene within a full four-band framework. A mode-resolved analysis reveals how propagat…
Twistraintronics in Square Moire Superlattices of Stacked Graphene Layers
Roberto Carrasco, Federico Escudero, Zhen Zhan +6
We report the first observation of controlled, strain-induced square moire patterns in stacked graphene. By selectively displacing native wrinkles, we drive a reversible transition…
Milli-Tesla Quantization enabled by Tuneable Coulomb Screening in Large-Angle Twisted Graphene
I. Babich, I. Reznikov, I. Begichev +15
The electronic quality of graphene has improved significantly over the past two decades, revealing novel phenomena. However, even state-of-the-art devices exhibit substantial spati…
Topological phase diagram of twisted bilayer graphene as a function of the twist angle
Leonardo A. Navarro-Labastida, Pierre A. Pantaleon, Francisco Guinea +1
Twisted bilayer graphene (TBG) hosts a rich landscape of electronic phases arising from the interplay between strong electron-electron interactions and nontrivial band topology. Wh…
Interaction-driven charge textures and unconventional superconductivity in strained monolayer graphene
Elias Andrade, Alejandro Jimeno-Pozo, Pierre A. Pantaleon +2
Two-dimensional systems with flat bands support correlated phases such as superconductivity. While twisted moiré systems, like twisted bilayer graphene, have revealed such states,…
Band Renormalization, Quarter Metals, and Chiral Superconductivity in Rhombohedral Tetralayer Graphene
Guillermo Parra-Martinez, Alejandro Jimeno-Pozo, Vo Tien Phong +7
Recently, exotic superconductivity emerging from a spin-and-valley-polarized metallic phase has been discovered in rhombohedral tetralayer graphene. To explain this observation, we…
Double-edged Role of Interactions in Superconducting Twisted Bilayer Graphene
Xueshi Gao, Alejandro Jimeno-Pozo, Pierre A. Pantaleon +9
For the unconventional superconducting phases in moire materials, a critical question is the role played by electronic interactions in the formation of Cooper pairs. In twisted bil…
Designing Flat Bands and Pseudo-Landau Levels in GaAs with Patterned Gates
Pierre A. Pantaleon, Zhen Zhan, Siddhartha E. Morales +1
We investigate the electronic properties of two-dimensional electron gases (2DEGs) subjected to a periodic patterned gate. By incorporating the superlattice (SL) potential induced…
Designing Band Structures by Patterned Dielectric Superlattices
Zhen Zhan, Yonggang Li, Pierre A. Pantaleon
We investigate the electronic structure of graphene monolayers subjected to patterned dielectric superlattices. Through a quantum capacitance model approach, we simulate realistic…
Electronic Structure and Kohn-Luttinger Superconductivity of Heavily-Doped Single-Layer Graphene
Saul Herrera, Guillermo Parra-Martinez, Philipp Rosenzweig +8
The existence of superconductivity (SC) in graphene appears to be established in both twisted and non-twisted multilayers. However, whether their building block, single-layer graph…
Evolution of Superconductivity in Twisted Graphene Multilayers
Min Long, Alejandro Jimeno-Pozo, Hector Sainz-Cruz +2
The group of moiré graphene superconductors keeps growing, and by now it contains twisted graphene multilayers and twisted double bilayers. We analyze the contribution of long rang…
Designing Moiré Patterns by Strain
Federico Escudero, Andreas Sinner, Zhen Zhan +2
Experiments conducted on two-dimensional twisted materials have revealed a plethora of moiré patterns with different forms and shapes. The formation of these patterns is usually at…
Short vs. long range exchange interactions in twisted bilayer graphene
Alejandro Jimeno-Pozo, Zachary A. H. Goodwin, Pierre A. Pantaleón +6
We discuss the effect of long-range interactions within the self-consistent Hartree-Fock (HF) approximation in comparison to short-range atomic Hubbard interactions on the band str…
Junctions and superconducting symmetry in twisted bilayer graphene
Héctor Sainz-Cruz, Pierre A. Pantaleón, Vo Tien Phong +2
Junctions provide a wealth of information on the symmetry of the order parameter of superconductors. We analyze junctions between a scanning tunneling microscope (STM) tip and supe…
Superconductivity and correlated phases in non-twisted bilayer and trilayer graphene
Pierre A. Pantaleon, Alejandro Jimeno-Pozo, Hector Sainz-Cruz +3
Twisted bilayer graphene has a rich phase diagram, including superconductivity. Recently, an unexpected discovery has been the observation of superconductivity in non-twisted graph…
Strain induced quasi-unidimensional channels in twisted moiré lattices
Andreas Sinner, Pierre A. Pantaleón, Francisco Guinea
We study the effects of strain in moiré systems composed of honeycomb lattices. We elucidate the formation of almost perfect one-dimensional moiré patterns in twisted bilayer syste…
Tunable large Berry dipole in strained twisted bilayer graphene
Pierre A. Pantaleón, Tony Low, Francisco Guinea
Recent experiments have measured local uniaxial strain fields in twisted bilayer graphene (TBG). Our calculations found that the finite Berry curvature generated by breaking the su…
Band structure of twisted bilayer graphene on hexagonal boron nitride
Tommaso Cea, Pierre A. Pantaleon, Francisco Guinea
The effect of an hexagonal boron nitride (hBN) layer close aligned with twisted bilayer graphene (TBG) is studied. At sufficiently low angles between twisted bilayer graphene and h…
Narrow bands, electrostatic interactions and band topology in graphene stacks
Pierre A. Pantaleon, Tommaso Cea, Rory Brown +2
The occurrence of superconducting and insulating phases is well-established in twisted graphene bilayers, and they have also been reported in other arrangements of graphene layers.…
Resonant transport in Kekule-distorted graphene nanoribbons
Elias Andrade, Ramon Carrillo-Bastos, Pierre A. Pantaleón +1
The formation of a superlattice in graphene can serve as a way to modify its electronic bandstructure and thus to engineer its electronic transport properties. Recent experiments h…
Topological Magnon Insulator with a Kekule Bond Modulation
Pierre A. Pantaleon, Ramon Carrillo-Bastos, Y. Xian
We examine the combined effects of a Kekule coupling texture (KC) and a Dzyaloshinskii-Moriya interaction (DMI) in a two-dimensional ferromagnetic honeycomb lattice. By analyzing t…