Tuning Spin Current Injection at Ferromagnet-Nonmagnet Interfaces by Molecular Design
Wittmann A, Schweicher G, Broch K, Novak J, Lami V, Cornil D, Mcnellis ER, Zadvorna O, Venkateshvaran D, Takimiya K, Geerts YH, Cornil J, Vaynzof Y, Sinova J, Watanabe S, Sirringhaus H (2020)
Publication Type: Journal article
Publication year: 2020
Journal
Book Volume: 124
Article Number: 027204
Journal Issue: 2
DOI: 10.1103/PhysRevLett.124.027204
Abstract
There is a growing interest in utilizing the distinctive material properties of organic semiconductors for spintronic applications. Here, we explore the injection of pure spin current from Permalloy into a small molecule system based on dinaphtho[2,3-b:2,3-f]thieno[3,2-b]thiophene (DNTT) at ferromagnetic resonance. The unique tunability of organic materials by molecular design allows us to study the impact of interfacial properties on the spin injection efficiency systematically. We show that both the spin injection efficiency at the interface and the spin diffusion length can be tuned sensitively by the interfacial molecular structure and side chain substitution of the molecule.
Involved external institutions
University of Cambridge
United Kingdom (GB)
Eberhard Karls Universität Tübingen
Germany (DE)
Masaryk University
Czech Republic (CZ)
Ruprecht-Karls-Universität Heidelberg
Germany (DE)
University of Mons / Université de Mons
Belgium (BE)
Johannes Gutenberg-Universität Mainz (JGU)
Germany (DE)
RIKEN Center for Emergent Matter Science (CEMS)
Japan (JP)
Université libre de Bruxelles (ULB) / Free University of Brussels
Belgium (BE)
University of Tokyo
Japan (JP)
United Kingdom (GB)
Eberhard Karls Universität Tübingen
Germany (DE)
Masaryk University
Czech Republic (CZ)
Ruprecht-Karls-Universität Heidelberg
Germany (DE)
University of Mons / Université de Mons
Belgium (BE)
Johannes Gutenberg-Universität Mainz (JGU)
Germany (DE)
RIKEN Center for Emergent Matter Science (CEMS)
Japan (JP)
Université libre de Bruxelles (ULB) / Free University of Brussels
Belgium (BE)
University of Tokyo
Japan (JP)
How to cite
APA:
Wittmann, A., Schweicher, G., Broch, K., Novak, J., Lami, V., Cornil, D.,... Sirringhaus, H. (2020). Tuning Spin Current Injection at Ferromagnet-Nonmagnet Interfaces by Molecular Design. Physical Review Letters, 124(2). https://doi.org/10.1103/PhysRevLett.124.027204
MLA:
Wittmann, Angela, et al. "Tuning Spin Current Injection at Ferromagnet-Nonmagnet Interfaces by Molecular Design." Physical Review Letters 124.2 (2020).
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