Subdimensional topologies, indicators, and higher order boundary effects
نویسندگان
چکیده
The study of topological band structures have sparked prominent research interest the past decade, culminating in recent formulation rather prolific classification schemes that encapsulate a large fraction phases and features. Within this context we recently reported on class unexplored thrive concept {\it sub-dimensional topology}. Although such trivial indicators representations when evaluated over complete Brillouin zone, they stable or fragile topologies within spaces, as planes lines. This perspective does not just refine pursuits, but can result observable features full dimensional sense. In three spatial dimensions (3D), for example, be characterized by non-trivial planes, having general invariants, are compensated Weyl nodes away from these planes. As result, 3D characteristics nodes, Fermi arcs edge states systematically predicted analysis. work further elaborate concepts. We present refined representation counting address distinctive bulk-boundary effects, include momentum depended (higher order) signature dependence perpendicular momentum. such, hope insights might spur new activities to deepen understanding phases.
منابع مشابه
Higher order multi-point fractional boundary value problems with integral boundary conditions
In this paper, we concerned with positive solutions for higher order m-point nonlinear fractional boundary value problems with integral boundary conditions. We establish the criteria for the existence of at least one, two and three positive solutions for higher order m-point nonlinear fractional boundary value problems with integral boundary conditions by using a result from the theory of fixed...
متن کاملControl Using Higher Order Laplacians in Network Topologies
This paper establishes the proper notation and precise interpretation for Laplacian flows on simplicial complexes. In particular, we have shown how to interpret these flows as time-varying discrete differential forms that converge to harmonic forms. The stability properties of the corresponding dynamical system are shown to be related to the topological structure of the underlying simplicial co...
متن کاملSingular Discrete Higher Order Boundary Value Problems
We study singular discrete nth order boundary value problems with mixed boundary conditions. We prove the existence of a positive solution by means of the lower and upper solutions method and the Brouwer fixed point theorem in conjunction with perturbation methods to approximate regular problems. AMS subject classification: 39A10, 34B16.
متن کاملOn boundary value problems of higher order abstract fractional integro-differential equations
The aim of this paper is to establish the existence of solutions of boundary value problems of nonlinear fractional integro-differential equations involving Caputo fractional derivative by using the techniques such as fractional calculus, H"{o}lder inequality, Krasnoselskii's fixed point theorem and nonlinear alternative of Leray-Schauder type. Examples are exhibited to illustrate the main resu...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical review
سال: 2021
ISSN: ['0556-2813', '1538-4497', '1089-490X']
DOI: https://doi.org/10.1103/physrevb.103.195145