Periodic negative magnetoresistance in granular YBa2Cu 3O7-δ nanowires

D. Levi; A. Shaulov; A. Frydman; G. Koren; B. Ya Shapiro; Y. Yeshurun

doi:10.1209/0295-5075/101/67005

Periodic negative magnetoresistance in granular YBa₂Cu ₃O₇-δ nanowires

D. Levi
, A. Shaulov
, A. Frydman
, G. Koren
, B. Ya Shapiro
, Y. Yeshurun

Technion-Israel Institute of Technology

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

12 Scopus citations

Abstract

Magneto-transport measurements in YBa₂Cu₃O _7-δ nanowires, comprising a single layer of a small number of grains, reveal periodic magnetoresistance oscillations in a wide temperature range below the transition. The rich structure of these oscillations manifests a negative magnetoresistance in the initial part of each cycle beginning at zero magnetic field. The salient features of these unique oscillations indicate the presence of π Josephson junctions in the granular wires, arising from the d-wave pairing symmetry in YBa₂Cu₃O_7-δ.

Original language	English
Article number	67005
Journal	EPL
Volume	101
Issue number	6
DOIs	https://doi.org/10.1209/0295-5075/101/67005
State	Published - Mar 2013

Bibliographical note

Funding Information:
This work was supported partly by the OTKA grants No. T023063 and T029387 to GS, and an FWF-grant (P-12748-MOB) to CPK. Thanks are due to G. J. Samuels (Beltsville) and E. Lieckfeldt (Berlin) for sharing unpublished data).

Funding

This work was supported partly by the OTKA grants No. T023063 and T029387 to GS, and an FWF-grant (P-12748-MOB) to CPK. Thanks are due to G. J. Samuels (Beltsville) and E. Lieckfeldt (Berlin) for sharing unpublished data).

Funders
Hungarian Scientific Research Fund

Access to Document

10.1209/0295-5075/101/67005

Cite this

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title = "Periodic negative magnetoresistance in granular YBa2Cu 3O7-δ nanowires",

abstract = "Magneto-transport measurements in YBa2Cu3O 7-δ nanowires, comprising a single layer of a small number of grains, reveal periodic magnetoresistance oscillations in a wide temperature range below the transition. The rich structure of these oscillations manifests a negative magnetoresistance in the initial part of each cycle beginning at zero magnetic field. The salient features of these unique oscillations indicate the presence of π Josephson junctions in the granular wires, arising from the d-wave pairing symmetry in YBa2Cu3O7-δ.",

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note = "Funding Information: This work was supported partly by the OTKA grants No. T023063 and T029387 to GS, and an FWF-grant (P-12748-MOB) to CPK. Thanks are due to G. J. Samuels (Beltsville) and E. Lieckfeldt (Berlin) for sharing unpublished data).",

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AU - Levi, D.

AU - Shaulov, A.

AU - Frydman, A.

AU - Koren, G.

AU - Shapiro, B. Ya

AU - Yeshurun, Y.

N1 - Funding Information: This work was supported partly by the OTKA grants No. T023063 and T029387 to GS, and an FWF-grant (P-12748-MOB) to CPK. Thanks are due to G. J. Samuels (Beltsville) and E. Lieckfeldt (Berlin) for sharing unpublished data).

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N2 - Magneto-transport measurements in YBa2Cu3O 7-δ nanowires, comprising a single layer of a small number of grains, reveal periodic magnetoresistance oscillations in a wide temperature range below the transition. The rich structure of these oscillations manifests a negative magnetoresistance in the initial part of each cycle beginning at zero magnetic field. The salient features of these unique oscillations indicate the presence of π Josephson junctions in the granular wires, arising from the d-wave pairing symmetry in YBa2Cu3O7-δ.

AB - Magneto-transport measurements in YBa2Cu3O 7-δ nanowires, comprising a single layer of a small number of grains, reveal periodic magnetoresistance oscillations in a wide temperature range below the transition. The rich structure of these oscillations manifests a negative magnetoresistance in the initial part of each cycle beginning at zero magnetic field. The salient features of these unique oscillations indicate the presence of π Josephson junctions in the granular wires, arising from the d-wave pairing symmetry in YBa2Cu3O7-δ.

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