On‐Demand Local Modification of High‐ T c Superconductivity in Few Unit‐Cell Thick Bi 2 Sr 2 CaCu 2 O 8+δ

Ghosh, Sanat ; Vaidya, Jaykumar ; Datta, Sawani ; Pandeya, Ram Prakash ; Jangade, Digambar A. ; Kulkarni, Ruta N. ; Maiti, Kalobaran ; Thamizhavel, Arumugam ; Deshmukh, Mandar M. (2020) On‐Demand Local Modification of High‐ T c Superconductivity in Few Unit‐Cell Thick Bi 2 Sr 2 CaCu 2 O 8+δ Advanced Materials, 32 (37). p. 2002220. ISSN 0935-9648

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Official URL: http://doi.org/10.1002/adma.202002220

Related URL: http://dx.doi.org/10.1002/adma.202002220

Abstract

High‐temperature superconductors (HTSs) are important for potential applications and for understanding the origin of strong correlations. Bi2Sr2CaCu2O8+δ (BSCCO), a van der Waals material, offers a platform to probe the physics down to a unit‐cell. Guiding the flow of electrons by patterning 2DEGS and oxide heterostructures has brought new functionality and access to new science. Similarly, modifying superconductivity in HTS locally, on a small length scale, is of immense interest for superconducting electronics. A route to modify superconductivity locally by depositing metal on the surface is reported here by transport studies on few unit‐cell thick BSCCO. Deposition of chromium (Cr) on the surface over a selected area of BSCCO results in insulating behavior of the underlying region. Cr locally depletes oxygen in CuO2 planes and disrupts the superconductivity in the layers below. This technique of modifying superconductivity is suitable for making sub‐micrometer superconducting wires and more complex superconducting devices.

Item Type:Article
Source:Copyright of this article belongs to John Wiley & Sons, Inc.
Keywords:Bi 2Sr 2CaCu 2O 8+δ; High‐Temperature Superconductors; Superconducting CuO 2 Planes; Tuning of Superconductivity; van der Waals Materials.
ID Code:117617
Deposited On:28 Apr 2021 12:20
Last Modified:28 Apr 2021 12:20

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