dorsal/arxiv
View SchemaFerromagnetic/superconducting bilayer structure: A model system for spin diffusion length estimation
| Authors | S. Soltan, J. Albrecht, H. --U. Habermeier |
|---|---|
| Categories | |
| ArXiv ID | physics/0408102 |
| URL | https://arxiv.org/abs/physics/0408102 |
| DOI | 10.1103/PhysRevB.70.144517 |
Abstract
We report detailed studies on ferromagnet--superconductor bilayer structures. Epitaxial bilayer structures of half metal--colossal magnetoresistive La$_{\mathrm{2/3}}$Ca$_{\mathrm{1/3}}$MnO$_{\mathrm{3}}$ (HM--CMR) and high--$T_{\mathrm{c}}$ superconducting YBa$_{\mathrm{2}}$Cu$_{\mathrm{3}}$O$_{\mathrm{7-\delta}}$(HTSC) are grown on SrTiO$_3$ (100) single--crystalline substrates using pulsed laser deposition. Magnetization $M$(T) measurements show the coexistence of ferromagnetism and superconductivity in these structures at low temperatures. Using the HM--CMR layer as an electrode for spin polarized electrons, we discuss the role of spin polarized self injection into the HTSC layer. The experimental results are in good agreement with a presented theoretical estimation, where the spin diffusion length $\xi_{\mathrm {FM}}$ is found to be in the range of $\xi_{\mathrm{FM}} \approx$ 10 nm.
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"abstract": "We report detailed studies on ferromagnet--superconductor bilayer structures.\nEpitaxial bilayer structures of half metal--colossal magnetoresistive\nLa$_{\\mathrm{2/3}}$Ca$_{\\mathrm{1/3}}$MnO$_{\\mathrm{3}}$ (HM--CMR) and\nhigh--$T_{\\mathrm{c}}$ superconducting\nYBa$_{\\mathrm{2}}$Cu$_{\\mathrm{3}}$O$_{\\mathrm{7-\\delta}}$(HTSC) are grown on\nSrTiO$_3$ (100) single--crystalline substrates using pulsed laser deposition.\nMagnetization $M$(T) measurements show the coexistence of ferromagnetism and\nsuperconductivity in these structures at low temperatures. Using the HM--CMR\nlayer as an electrode for spin polarized electrons, we discuss the role of spin\npolarized self injection into the HTSC layer. The experimental results are in\ngood agreement with a presented theoretical estimation, where the spin\ndiffusion length $\\xi_{\\mathrm {FM}}$ is found to be in the range of\n$\\xi_{\\mathrm{FM}} \\approx$ 10 nm.",
"arxiv_id": "physics/0408102",
"authors": [
"S. Soltan",
"J. Albrecht",
"H. --U. Habermeier"
],
"categories": [
"physics.class-ph",
"cond-mat.supr-con"
],
"doi": "10.1103/PhysRevB.70.144517",
"title": "Ferromagnetic/superconducting bilayer structure: A model system for spin diffusion length estimation",
"url": "https://arxiv.org/abs/physics/0408102"
},
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"type": "Model",
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