Tailoring the transport properties of YBa₂Cu₃O_7-δ thin films by light-ion irradiation

Autor(en)

Wolfgang Lang, Tobias Enzenhofer, Martin Peruzzi, Johannes D. Pedarnig, Dieter Bäuerle, C. Horner, Ewald Cekan, Elmar Platzgummer, Hans Loeschner

Abstrakt

Irradiation with light ions allows for a post-processing of high-temperature superconductor thin films to tailor the electrical transport properties to specific requirements. We present a systematic investigation on the evolution of the resistivity and the Hall angle of 100nm-thick YBa₂Cu₃O_7−δ films for cumulative irradiation with He⁺ ions. The irradiation induces point defects, primarily by displacing oxygen atoms, that result in a systematic decrease of the critical temperature and finally in a transition into a semiconducting state. The temperature dependencies and the offset at T = 0 K of the resistivity and the inverse Hall angle both indicate enhanced carrier scattering at defects but only a small reduction of the concentration of itinerant carriers. The carrier mobility inferred from the Hall angle is systematically reduced with the irradiation dose.

Organisation(en)

Elektronische Materialeigenschaften

Externe Organisation(en)

Universität Wien, IMS Nanofabrication AG, Johannes Kepler Universität Linz

Journal

Institute of Physics: Conference Series

Band

181

Seiten

1549-1555

Anzahl der Seiten

7

ISSN

0951-3248

Publikationsdatum

2004

Peer-reviewed

Ja

ÖFOS 2012

103033 Supraleitung, 103013 Ionenphysik, 103009 Festkörperphysik, 103018 Materialphysik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/77a9f147-dfa6-42a5-ae02-abfd62e164a1