arXiv subjects

Scott McGuire

Publications and source records attributed to Scott McGuire.

3 recordsLinked to original sources

arXiv2026

Spiral Edge States in Topological 2D Sb2Te3 Crystals

This work explores the edge state conduction properties of twinned and spiraled, 2D Sb2Te3 topological insulator crystals. We show the structure supports spatially continuous edge states within two spiral and knotted edge conduction channels. The channels are connected through a topological defect. This geometry introduces boundary conditions into the 2D crystal that modifies the edge state dispersion. Using a combination of low loss Electron Energy Loss Spectroscopy, Magnetic Force Microscopy and traditional carrier transport measurements we identify a distinct excitation at 0.155 eV in the spiral that seems to be related to two isolated states within the gap. This state is localized to the crystal edges. The modification of edge state bands using manipulation of a systems quantum geometry may open new avenues for the use of 2D topological systems.

cond-mat.mtrl-sci↗

arXiv2026

Anomalous Edge Contrast in Magnetic Force Imaging of 2D Topological Insulators

Magnetic force imaging (MFM) of 2D topological insulators, such as crystalline plates of Bi2Te3 and Bi2Se3, reveals anomalously large contrast around the plate edges even under ambient imaging conditions. And while there are several known contrast mechanisms in MFM, these cannot easily explain the magnitude of contrast observe for such systems. In this work we use multi-parameter magnetic force phase imaging together with a simple analytical model to suggest that the observed magnetic edge-features can be associated with two sources: a pseudo-Faraday effect in the conductive edge channels of the topological system and magnetic scattering in those channels caused by the proximal, localized field of the tip. These results suggest novel MFM contrast mechanisms unique to topological systems and point to the utility of multi-parameter MFM techniques in studies of topological-material-based circuit elements.

cond-mat.mes-hall↗

arXiv2010

A model for semantic integration of business components

Today, reusable components are available in several repositories. These last are certainly conceived for the reusing However, this re-use is not immediate; it requires, in the fact, to pass through some essential conceptual operations, among them in particular, research, integration, adaptation, and composition. We are interested in the present work to the problem of semantic integration of heterogeneous Business Components. This problem is often put in syntactical terms, while the real stake is of semantic order. Our contribution concerns a model proposal for Business components integration as well as resolution method of semantic naming conflicts, met during the integration of Business Components.

cs.SE↗