Found 345 results, showing the newest relevant preprints. Sort by relevancy only.Update me on new preprints

Quantized octupole acoustic topological insulator

The Berry phase associated with energy bands in crystals can lead to quantized quantities, such as the quantization of electric dipole polarization in an insulator, known as a one-dimensional (1D) topological insulator (TI) phase. Expand abstract.
8 days ago
7/10 relevant
arXiv

Demonstration of a quantized acoustic octupole topological insulator

Recently extended from the modern theory of electric polarization, quantized multipole topological insulators (QMTIs) describe higher-order multipole moments, lying in nested Wilson loops, which are inherently quantized by lattice symmetries. Expand abstract.
8 days ago
10/10 relevant
arXiv

Quasi-periodic dynamical phase transitions in multi-band topological insulators and connections with entanglement entropy and fidelity susceptibility

Such models have a richer structure of dynamical phase transitions than the simple two-band topological insulator models typically considered previously. Expand abstract.
15 days ago
9/10 relevant
arXiv

Observation of optical absorption correlated with surface state of topological insulator

These observations combined together demonstrate that under the hw=1eV illumination electron is excited from a bulk band into the topological surface band of Bi2Se3. Expand abstract.
15 days ago
7/10 relevant
arXiv

Finite-dimensional bistable topological insulators: From small to large

In this work using as an example realistic polariton topological insulators built from small-size honeycomb arrays of microcavity pillars, we illustrate how topological properties of the system build up upon gradual increase of its dimensionality. Expand abstract.
15 days ago
10/10 relevant
arXiv

Electronic transport in one-dimensional Floquet topological insulators via topological- and non-topological edge states

Based on probing electronic transport properties, we propose an experimental test for the recently discovered rich topological phase diagram of one-dimensional Floquet topological insulators with Rashba spin-orbit interaction [Kennes \emph{et al.}, Phys. Expand abstract.
16 days ago
10/10 relevant
arXiv

Influence of point defects on the electronic and topological properties of monolayer WTe$_2$

In some topological insulators, such as graphene and WTe$_2$, band inversion originates from chemical bonding and space group symmetry, in contrast to materials such as Bi$_2$Se$_3$, where the band inversion derives from relativistic effects in the atoms. Expand abstract.
17 days ago
4/10 relevant
arXiv

Efficient spin-orbit torque switching with non-epitaxial chalcogenide heterostructures

The spin-orbit torques (SOTs) generated from topological insulators (TIs) have gained increasing attention in recent years. Expand abstract.
20 days ago
4/10 relevant
arXiv

Giant unidirectional magnetoresistance in topological insulator -- ferromagnetic semiconductor heterostructures

The unidirectional magnetoresistance (UMR) is one of the most complex spin-dependent transport phenomena in ferromagnet/non-magnet bilayers, which involves spin injection and accumulation due to the spin Hall effect (SHE) or Rashba-Edelstein effect (REE), spin-dependent scattering, and magnon scattering at the interface or in the bulk of the ferromagnet. Expand abstract.
21 days ago
7/10 relevant
arXiv

Lateral lattice coherence lengths in thin films of bismuth telluride topological insulators, with overview on polarization factors for X-ray dynamical diffraction in monochromator crystals

In the supporting information file for article Dynamics of Defects in van der Waals Epitaxy of Bismuth Telluride Topological Insulators(J. Expand abstract.
21 days ago
8/10 relevant
arXiv