Amorphous topological superconductivity in a Shiba glass

Nature Communications
Kim PöyhönenTeemu Ojanen

Abstract

Topological states of matter support quantised nondissipative responses and exotic quantum particles that cannot be accessed in common materials. The exceptional properties and application potential of topological materials have triggered a large-scale search for new realisations. Breaking away from the popular trend focusing almost exclusively on crystalline symmetries, we introduce the Shiba glass as a platform for amorphous topological quantum matter. This system consists of an ensemble of randomly distributed magnetic atoms on a superconducting surface. We show that subgap Yu-Shiba-Rusinov states on the magnetic moments form a topological superconducting phase at critical density despite a complete absence of spatial order. Experimental signatures of the amorphous topological state can be obtained by scanning tunnelling microscopy measurements probing the topological edge mode. Our discovery demonstrates the physical feasibility of amorphous topological quantum matter, presenting a concrete route to fabricating new topological systems from nontopological materials with random dopants.

References

Apr 28, 2009·Physical Review Letters·Jian LiShun-Qing Shen
Apr 7, 2010·Physical Review Letters·C W GrothC W J Beenakker
Jan 15, 2011·Physical Review Letters·Yuval OregFelix von Oppen
Nov 19, 2013·Physical Review Letters·Jelena KlinovajaDaniel Loss
Dec 3, 2013·Physical Review Letters·M M Vazifeh, M Franz
Jul 22, 2015·Physical Review Letters·Joel Röntynen, Teemu Ojanen
Nov 21, 2015·Physical Review Letters·Michael RubyKatharina J Franke
Dec 13, 2017·Nature Communications·Gerbold C MénardTristan Cren
Mar 14, 2018·Nano Letters·Shawulienu KezilebiekePeter Liljeroth

❮ Previous
Next ❯

Citations

Nov 26, 2019·Physical Review Letters·Dániel VarjasIon Cosma Fulga
Sep 7, 2019·Physical Review Letters·Yan-Bin YangYong Xu
Jan 14, 2021·Nature Communications·Damianos ChatzopoulosMilan P Allan
Nov 20, 2020·Proceedings of the National Academy of Sciences of the United States of America·Quentin MarsalAdolfo G Grushin
Jun 11, 2021·Physical Review Letters·Jiong-Hao WangYong Xu
Nov 5, 2019·Nano Letters·Marcio CostaAdalberto Fazzio

❮ Previous
Next ❯

Methods Mentioned

BETA
scanning tunnelling microscopy

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

© 2022 Meta ULC. All rights reserved