Ordered Bose Glass of Vortices in Superconducting YBa₂Cu₃O_7−δ Thin Films with a Periodic Pin Lattice Created by Focused Helium Ion Irradiation

Author(s)

Lucas Backmeister, Bernd Aichner, Max Karrer, Katja Wurster, Reinhold Kleiner, Edward Goldobin, Dieter Koelle, Wolfgang Lang

Abstract

The defect-rich morphology of YBa₂Cu₃O_7−δ (YBCO) thin films leads to a glass-like arrangement of Abrikosov vortices which causes the resistance to disappear in vanishing current densities. This vortex glass consists of entangled vortex lines and is identified by a characteristic scaling of the voltage–current isotherms. Randomly distributed columnar defects stratify the vortex lines and lead to a Bose glass. Here, we report on the observation of an ordered Bose glass in a YBCO thin film with a hexagonal array of columnar defects with 30 nm spacings. The periodic pinning landscape was engineered by a focused beam of 30 keV He⁺ ions in a helium-ion microscope.

Organisation(s)

Electronic Properties of Materials

External organisation(s)

Eberhard Karls Universität Tübingen

Journal

Nanomaterials

Volume

12

No. of pages

10

ISSN

2079-4991

DOI

https://doi.org/10.3390/nano12193491

Publication date

10-2022

Peer reviewed

Yes

Austrian Fields of Science 2012

103033 Superconductivity, 210004 Nanomaterials

Keywords

ASJC Scopus subject areas

General Chemical Engineering, General Materials Science

Portal url

https://ucrisportal.univie.ac.at/en/publications/7a543f45-43f7-49d6-8b60-968931d8b62d