Results 31 to 40 of about 593 (157)

"Tear-And-Stack" Twisted SrTiO₃ Moiré Superlattices for Precise Interfacial Reconstruction and Polar Topology. [PDF]

Adv Mater
The tear‐and‐stack method enables the creation of twisted SrTiO3 bilayers with accurate twist‐angle control, which yield atomically sharp oxide moiré superlattices with emergent exotic topological polar vortices, thereby opening a new pathway for twistronics based on 2D‐like non‐van der Waals oxides.
Zhang Y, Ge J, Su S, Li Y, Zhang W, Lyu L, Song J, Liu Y, Lei Y, Du H, Zhong G, Huang B, Li J, Li C.   +13 more
europepmc   +2 more sources

Flexoelectrically Induced Polar Topology in Twisted SrTiO₃ Membranes. [PDF]

Adv Mater
Twisted SrTiO3 bilayers host polar vortices of flexoelectric origin, revealed through combined experiment and theory. By reconstructing polarization from the toroidal moment of strain gradients, the work establishes a 3D chiral state with broken inversion and mirror symmetries.
Tenreiro I, Aramberri H, Rouco V, Sánchez-Santolino G, Cabero M, Gallego F, Sánchez-Manzano D, González-Calbet JM, Mompeán F, García-Hernández M, Rivera-Calzada A, Íñiguez-González J, León C, Santamaría J.   +13 more
europepmc   +2 more sources

Solvothermal growth of moiré superlattices in antimony telluride spiral-type nanoplates

Frontiers in Materials, 2022
The study of moiré superlattices (MSLs) has surged in recent years, as they have been found to host several emergent quantum phenomena associated with high electron correlations.
Robert Link, Gabriel Marcus, David Carroll   +2 more
doaj   +1 more source

ARPES Signatures of Few-Layer Twistronic Graphenes

Nano Letters, 2023
Diverse emergent correlated electron phenomena have been observed in twisted graphene layers due to electronic interactions with the moiré superlattice potential. Many electronic structure predictions have been reported exploring this new field, but with few momentum-resolved electronic structure measurements to test them.
Nunn, James E., McEllistrim, Andrew, Weston, Astrid, Garcia-Ruiz, Aitor, Watson, Matthew D., Mucha-Kruczynski, Marcin, Cacho, Cephise, Gorbachev, Roman V., Fal’ko, Vladimir I., Wilson, Neil R.   +9 more
openaire   +3 more sources

Van der Waals Heterostructures for Next-Generation Spintronics: Multiferroic-Mediated Magnetoelectric Properties. [PDF]

Adv Sci (Weinh)
As CMOS technology approaches fundamental energy limits, new paradigms for low‐power information processing are required. Magnetic systems are attractive for their spin transport, yet current‐induced magnetization control is energy inefficient. Multiferroic heterostructures enable energy‐efficient electric field manipulation of magnetism.
Lee D, Yang J, Oh I, Lee S.
europepmc   +2 more sources

Twistronics: a turning point in 2D quantum materials [PDF]

Electronic Structure, 2021
Abstract Moiré superlattices— periodic orbital overlaps and lattice-reconstruction between sites of high atomic registry in vertically-stacked 2D layered materials —are quantum-active interfaces where non-trivial quantum phases on ...
Zachariah Hennighausen, Swastik Kar
openaire   +2 more sources

Spatially Resolved Strain Mapping In Flexible Oxide Membranes. [PDF]

Small
High‐resolution synchrotron x‐ray diffraction reveals how strain transfers and distributes within crystalline oriented oxide membranes (10–100 nm thick) on flexible substrates that are subjected to stretching and bending. The study uncovers local strain heterogeneities that deviate from macroscopic averages, providing a crucial framework when ...
Salles P, Ramis M, Brand E, Kúš P, Ruellou J, Sartori A, Caicedo Roque JM, Park DS, Pryds N, Coll M, Drnec J.   +10 more
europepmc   +2 more sources

Hexagonal boron nitride: optical properties in the deep ultraviolet

Comptes Rendus. Physique, 2021
We review the recent advance in the understanding of the optoelectronic properties of hexagonal boron nitride (hBN) in the deep ultraviolet. The comparison between bulk hBN and monolayer hBN highlights some of their major differences such the bandgap ...
Cassabois, Guillaume, Rousseau, Adrien, Elias, Christine, Pelini, Thomas, Vuong, Phuong, Valvin, Pierre, Gil, Bernard   +6 more
doaj   +1 more source

Borophene: Crucial Challenges and the Way Forward. [PDF]

Adv Sci (Weinh)
This review explores the challenges and progress in borophene research, focusing on synthesis strategies, structural properties, and potential applications. It highlights key experimental breakthroughs, discusses theoretical insights into borophene's unique features, and addresses pathways for overcoming stability and scalability issues.
Li Z, Sankar J, Kumar P, Vinu A.
europepmc   +2 more sources

2D topological matter from a boundary Green's functions perspective: Faddeev-LeVerrier algorithm implementation

SciPost Physics, 2022
Since the breakthrough of twistronics a plethora of topological phenomena in correlated systems has appeared. These devices can be typically analyzed in terms of lattice models using Green's function techniques. In this work we introduce a general method
Miguel Alvarado, Alfredo Levy Yeyati
doaj   +1 more source