2015/10/09 by Timothy H. Hsieh, Hiroaki Ishizuka, Leon Balents +1 · 2 citations
Mathematics · Physics and Astronomy · #Advanced Condensed Matter Physics #Fermion #Layer (electronics) #Mathematics #Nanotechnology #Order (exchange) #Pairing #Physics #Physics of Superconductivity and Magnetism #Proximity effect (electron beam lithography) #Quantum mechanics #Superconductivity #Symmetry protected topological order #Topological Materials and Phenomena #Topological entropy in physics #Topological order #Topological quantum number #Topology (electrical circuits) #cond-mat.mtrl-sci #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.116.086802
published as Phys. Rev. Lett. 116, 086802 (2016) · 5 pages, 3 figures
arxiv created 2015/10/09 · openalex publication_date 2016/02/26 · arxiv updated 2016/03/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Existing proximity effects stem from systems with a local order parameter, such as a local magnetic moment or a local superconducting pairing amplitude. Here, we demonstrate that despite lacking a local order parameter, topological phases also may give rise to a proximity effect of a distinctively inverted nature. We focus on a general construction in which a topological phase is extensively coupled to a second system, and we argue that, in many cases, the inverse topological order will be induced on the second system. To support our arguments, we rigorously establish this "bulk topological proximity effect" for all gapped free-fermion topological phases and representative integrable models of interacting topological phases. We present a terrace construction which illustrates the phenomenological consequences of this proximity effect. Finally, we discuss generalizations beyond our framework, including how intrinsic topological order may also exhibit this effect.