Differential conductance of the ferromagnet/superconductor interface of DyBa2Cu3O7/La2/3Ba 1/3MnO3 heterostructures

V. A. Vas'ko; K. R. Nikolaev; V. A. Larkin; P. A. Kraus; A. M. Goldman

doi:10.1063/1.122020

Differential conductance of the ferromagnet/superconductor interface of DyBa₂Cu₃O₇/La_2/3Ba _1/3MnO₃ heterostructures

V. A. Vas'ko, K. R. Nikolaev, V. A. Larkin, P. A. Kraus, A. M. Goldman

Physics and Astronomy (Twin Cities)

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

69 Scopus citations

Abstract

The voltage bias, temperature, and magnetic field dependence of the differential conductance of the interface between a half-metallic ferromagnet and a high-T_c superconductor have been studied in DyBa₂Cu₃O₇/La_2/3Ba _1/3MnO₃ heterostructures. Below the superconducting transition the differential conductance exhibits a dip at zero bias whose amplitude is a decreasing function of temperature and/or magnetic field. These results are interpreted qualitatively using a picture based on the suppression of Andreev reflection as a consequence of the high spin polarization of the carriers in the half-metallic ferromagnet.

Original language	English (US)
Pages (from-to)	844-846
Number of pages	3
Journal	Applied Physics Letters
Volume	73
Issue number	6
DOIs	https://doi.org/10.1063/1.122020
State	Published - 1998

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title = "Differential conductance of the ferromagnet/superconductor interface of DyBa2Cu3O7/La2/3Ba 1/3MnO3 heterostructures",

abstract = "The voltage bias, temperature, and magnetic field dependence of the differential conductance of the interface between a half-metallic ferromagnet and a high-Tc superconductor have been studied in DyBa2Cu3O7/La2/3Ba 1/3MnO3 heterostructures. Below the superconducting transition the differential conductance exhibits a dip at zero bias whose amplitude is a decreasing function of temperature and/or magnetic field. These results are interpreted qualitatively using a picture based on the suppression of Andreev reflection as a consequence of the high spin polarization of the carriers in the half-metallic ferromagnet.",

author = "Vas'ko, {V. A.} and Nikolaev, {K. R.} and Larkin, {V. A.} and Kraus, {P. A.} and Goldman, {A. M.}",

year = "1998",

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T1 - Differential conductance of the ferromagnet/superconductor interface of DyBa2Cu3O7/La2/3Ba 1/3MnO3 heterostructures

AU - Vas'ko, V. A.

AU - Nikolaev, K. R.

AU - Larkin, V. A.

AU - Kraus, P. A.

AU - Goldman, A. M.

PY - 1998

Y1 - 1998

N2 - The voltage bias, temperature, and magnetic field dependence of the differential conductance of the interface between a half-metallic ferromagnet and a high-Tc superconductor have been studied in DyBa2Cu3O7/La2/3Ba 1/3MnO3 heterostructures. Below the superconducting transition the differential conductance exhibits a dip at zero bias whose amplitude is a decreasing function of temperature and/or magnetic field. These results are interpreted qualitatively using a picture based on the suppression of Andreev reflection as a consequence of the high spin polarization of the carriers in the half-metallic ferromagnet.

AB - The voltage bias, temperature, and magnetic field dependence of the differential conductance of the interface between a half-metallic ferromagnet and a high-Tc superconductor have been studied in DyBa2Cu3O7/La2/3Ba 1/3MnO3 heterostructures. Below the superconducting transition the differential conductance exhibits a dip at zero bias whose amplitude is a decreasing function of temperature and/or magnetic field. These results are interpreted qualitatively using a picture based on the suppression of Andreev reflection as a consequence of the high spin polarization of the carriers in the half-metallic ferromagnet.

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Differential conductance of the ferromagnet/superconductor interface of DyBa₂Cu₃O₇/La_2/3Ba _1/3MnO₃ heterostructures

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