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

11 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 Thanks are due to G. J. Samuels (Beltsville) and E. Lieckfeldt (Berlin) for sharing unpublished data).

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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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T1 - Periodic negative magnetoresistance in granular YBa2Cu 3O7-δ nanowires

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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Periodic negative magnetoresistance in granular YBa₂Cu ₃O₇-δ nanowires

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