Transport properties of ultra-thin granular YBa2Cu3O7-δ nanobridges

E. Bar; D. Levi; G. Koren; A. Shaulov; Y. Yeshurun

doi:10.1016/j.physc.2014.03.022

Transport properties of ultra-thin granular YBa₂Cu₃O_7-_δ nanobridges

E. Bar
, D. Levi
, G. Koren
, A. Shaulov
, Y. Yeshurun

Bar-Ilan University
Technion-Israel Institute of Technology

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

Magneto-transport measurements in YBa₂Cu₃O₇ nanobridges, patterned on laser ablated ultra-thin films, reveal phenomena that are usually absent in the bulk of the material. These include broadening of the resistive transition, magnetoresistance oscillation, negative magnetoresistance at low fields, negative magnetoresistance slope at high fields, and V-I curves that exhibit voltage jumps at temperatures well below T_c. These phenomena, attributed to the granular nature of the bridges, should be taken into account in any future attempts to utilize such bridges in technological applications.

Original language	English
Pages (from-to)	160-164
Number of pages	5
Journal	Physica C: Superconductivity and its Applications
Volume	506
DOIs	https://doi.org/10.1016/j.physc.2014.03.022
State	Published - 15 Nov 2014

Bibliographical note

Publisher Copyright:
© 2014 Elsevier Ltd. All rights reserved.

Funding

Valuable discussions with Rudolf Huebener and Vladimir Kogan are acknowledged. Y.Y. acknowledges a support of the Israel Science Foundation (Grant No. 164/12 ).

Funders	Funder number
Israel Science Foundation	164/12

Keywords

High-temperature superconductors
Hot spots
Magnetoresistance oscillation
Nano-wires
Negative magnetoresistance
Negative magnetoresistance slope

Access to Document

10.1016/j.physc.2014.03.022

Cite this

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title = "Transport properties of ultra-thin granular YBa2Cu3O7-δ nanobridges",

abstract = "Magneto-transport measurements in YBa2Cu3O7 nanobridges, patterned on laser ablated ultra-thin films, reveal phenomena that are usually absent in the bulk of the material. These include broadening of the resistive transition, magnetoresistance oscillation, negative magnetoresistance at low fields, negative magnetoresistance slope at high fields, and V-I curves that exhibit voltage jumps at temperatures well below Tc. These phenomena, attributed to the granular nature of the bridges, should be taken into account in any future attempts to utilize such bridges in technological applications.",

keywords = "High-temperature superconductors, Hot spots, Magnetoresistance oscillation, Nano-wires, Negative magnetoresistance, Negative magnetoresistance slope",

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AU - Bar, E.

AU - Levi, D.

AU - Koren, G.

AU - Shaulov, A.

AU - Yeshurun, Y.

PY - 2014/11/15

Y1 - 2014/11/15

N2 - Magneto-transport measurements in YBa2Cu3O7 nanobridges, patterned on laser ablated ultra-thin films, reveal phenomena that are usually absent in the bulk of the material. These include broadening of the resistive transition, magnetoresistance oscillation, negative magnetoresistance at low fields, negative magnetoresistance slope at high fields, and V-I curves that exhibit voltage jumps at temperatures well below Tc. These phenomena, attributed to the granular nature of the bridges, should be taken into account in any future attempts to utilize such bridges in technological applications.

AB - Magneto-transport measurements in YBa2Cu3O7 nanobridges, patterned on laser ablated ultra-thin films, reveal phenomena that are usually absent in the bulk of the material. These include broadening of the resistive transition, magnetoresistance oscillation, negative magnetoresistance at low fields, negative magnetoresistance slope at high fields, and V-I curves that exhibit voltage jumps at temperatures well below Tc. These phenomena, attributed to the granular nature of the bridges, should be taken into account in any future attempts to utilize such bridges in technological applications.

KW - High-temperature superconductors

KW - Hot spots

KW - Magnetoresistance oscillation

KW - Nano-wires

KW - Negative magnetoresistance

KW - Negative magnetoresistance slope

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