Room-Temperature On-Spin-Switching and Tuning in a Porphyrin-Based Multifunctional Interface

Sturmeit HM, Cojocariu I, Windischbacher A, Puschnig P, Piamonteze C, Jugovac M, Sala A, Africh C, Comelli G, Cossaro A, Verdini A, Floreano L, Stredansky M, Vesselli E, Hohner C, Kettner M, Libuda J, Schneider CM, Zamborlini G, Cinchetti M, Feyer V (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Small Wiley-VCH Verlag

DOI: 10.1002/smll.202104779

Abstract

Molecular interfaces formed between metals and molecular compounds offer a great potential as building blocks for future opto-electronics and spintronics devices. Here, a combined theoretical and experimental spectro-microscopy approach is used to show that the charge transfer occurring at the interface between nickel tetraphenyl porphyrins and copper changes both spin and oxidation states of the Ni ion from [Ni(II), S = 0] to [Ni(I), S = 1/2]. The chemically active Ni(I), even in a buried multilayer system, can be functionalized with nitrogen dioxide, allowing a selective tuning of the electronic properties of the Ni center that is switched to a [Ni(II), S = 1] state. While Ni acts as a reversible spin switch, it is found that the electronic structure of the macrocycle backbone, where the frontier orbitals are mainly localized, remains unaffected. These findings pave the way for using the present porphyrin-based system as a platform for the realization of multifunctional devices where the magnetism and the optical/transport properties can be controlled simultaneously by independent stimuli.

Authors with CRIS profile

Chantal Hohner Lehrstuhl für Katalytische Grenzflächenforschung Miroslav Kettner Lehrstuhl für Katalytische Grenzflächenforschung Jörg Libuda Lehrstuhl für Katalytische Grenzflächenforschung

Involved external institutions

Technische Universität Dortmund DE Germany (DE) Forschungszentrum Jülich / Research Centre Jülich (FZJ) DE Germany (DE) Karl-Franzens-Universität Graz AT Austria (AT) Paul Scherrer Institute (PSI) CH Switzerland (CH) Laboratorio Nazionale TASC IT Italy (IT)

How to cite

APA:

Sturmeit, H.M., Cojocariu, I., Windischbacher, A., Puschnig, P., Piamonteze, C., Jugovac, M.,... Feyer, V. (2021). Room-Temperature On-Spin-Switching and Tuning in a Porphyrin-Based Multifunctional Interface. Small. https://doi.org/10.1002/smll.202104779

MLA:

Sturmeit, Henning Maximilian, et al. "Room-Temperature On-Spin-Switching and Tuning in a Porphyrin-Based Multifunctional Interface." Small (2021).

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