Study of in-plane electrical transport anisotropy of a -axis oriented YBa2Cu3 O7-δ nanodevices

Reza Baghdadi, Riccardo Arpaia, Evgeny Stepantsov, Marco Arzeo, Dmitri Golubev, Domenico Montemurro, Eric Andersson, Thilo Bauch, Floriana Lombardi*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)
117 Downloads (Pure)

Abstract

In the present work, we report the growth of fully untwinned high-quality a-axis-oriented YBa2Cu3O7-δ films on (100) SrLaGaO4 substrates by using PrBa2Cu3O7-δ as a buffer layer. We also fabricated nanowires at different angles γ with respect to the [0,1,0] direction of the substrate and studied the in-plane anisotropy of the critical current density, which we explained by considering the anisotropy in the coherence length ξ and London penetration depth λL. Finally, half-integer Shapiro-like steps measured in slightly underdoped c-axis oriented (γ=90°) nanowires point towards a different transport regime, which could shed light on intriguing issues of high-critical-temperature superconductors.

Original languageEnglish
Article number184505
Pages (from-to)1-7
JournalPhysical Review B
Volume95
Issue number18
DOIs
Publication statusPublished - 4 May 2017
MoE publication typeA1 Journal article-refereed

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