Electric Field-Controlled Magnetization in GaAs/AlGaAs Heterostructures-Chiral Organic Molecules Hybrids

Eilam Z.B. Smolinsky; Avner Neubauer; Anup Kumar; Shira Yochelis; Eyal Capua; Raanan Carmieli; Yossi Paltiel; Ron Naaman; Karen Michaeli

doi:10.1021/acs.jpclett.9b00092

Electric Field-Controlled Magnetization in GaAs/AlGaAs Heterostructures-Chiral Organic Molecules Hybrids

Eilam Z.B. Smolinsky, Avner Neubauer, Anup Kumar, Shira Yochelis, Eyal Capua, Raanan Carmieli, Yossi Paltiel, Ron Naaman, Karen Michaeli

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

38 Scopus citations

Abstract

We study GaAs/AlGaAs devices hosting a two-dimensional electron gas and coated with a monolayer of chiral organic molecules. We observe clear signatures of roomerature magnetism, which is induced in these systems by applying a gate voltage. We explain this phenomenon as a consequence of the spin-polarized charges that are injected into the semiconductor through the chiral molecules. The orientation of the magnetic moment can be manipulated by low gate voltages, with a switching rate in the megahertz range. Thus, our devices implement an efficient, electric field-controlled magnetization, which has long been desired for their technical prospects.

Original language	English
Pages (from-to)	1139-1145
Number of pages	7
Journal	Journal of Physical Chemistry Letters
Volume	10
Issue number	5
DOIs	https://doi.org/10.1021/acs.jpclett.9b00092
State	Published - 7 Mar 2019
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2019 American Chemical Society.

Funding

Y.P. and R.N. acknowledge the partial support of the Volkswagen Foundation, the Israel Ministry of Science, and the John Templeton Foundation; K.M. acknowledges the support of the Israel Science Foundation Grant No. 1889/16.

Funders	Funder number
John Templeton Foundation
Volkswagen Foundation
Israel Science Foundation	1889/16
Ministry of science and technology, Israel

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10.1021/acs.jpclett.9b00092

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abstract = "We study GaAs/AlGaAs devices hosting a two-dimensional electron gas and coated with a monolayer of chiral organic molecules. We observe clear signatures of roomerature magnetism, which is induced in these systems by applying a gate voltage. We explain this phenomenon as a consequence of the spin-polarized charges that are injected into the semiconductor through the chiral molecules. The orientation of the magnetic moment can be manipulated by low gate voltages, with a switching rate in the megahertz range. Thus, our devices implement an efficient, electric field-controlled magnetization, which has long been desired for their technical prospects.",

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AU - Yochelis, Shira

AU - Capua, Eyal

AU - Carmieli, Raanan

AU - Paltiel, Yossi

AU - Naaman, Ron

AU - Michaeli, Karen

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Electric Field-Controlled Magnetization in GaAs/AlGaAs Heterostructures-Chiral Organic Molecules Hybrids

Abstract

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