Control of perpendicular magnetic anisotropy at the Fe/MgO interface by phthalocyanine insertion

Takeshi Kawabe; Shoya Sakamoto; Takuya Tsukahara; Yoshinori Kotani; Kentaro Toyoki; Emi Minamitani; Yoshio Miura; Tetsuya Nakamura; Atsufumi Hirohata; Shinji Miwa

doi:10.1103/PhysRevB.105.184414

Control of perpendicular magnetic anisotropy at the Fe/MgO interface by phthalocyanine insertion

Takeshi Kawabe, Shoya Sakamoto, Takuya Tsukahara, Yoshinori Kotani, Kentaro Toyoki, Emi Minamitani, Yoshio Miura, Tetsuya Nakamura, Atsufumi Hirohata, Shinji Miwa

Electronic Engineering

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

Abstract

Perpendicular magnetic anisotropy at an interface between Fe and MgO with Co-phthalocyanine (CoPc) adsorption has been investigated. We find that the CoPc adsorption at an Fe/MgO interface increases the perpendicular magnetic anisotropy energy (PMA) while maintaining the voltage-controlled magnetic anisotropy effect. By performing X-ray magnetic circular dichroism spectroscopy measurements, we reveal that the CoPc adsorption induces hole accumulation at the Fe surface. The origin of the PMA enhancement is attributed to the increased orbital magnetic moment anisotropy of the Fe atoms.

Original language	English
Article number	184414
Number of pages	6
Journal	Physical Review B
Volume	105
DOIs	https://doi.org/10.1103/PhysRevB.105.184414
Publication status	Published - 13 May 2022

Bibliographical note

This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details

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10.1103/PhysRevB.105.184414

220405_Fe_CoPc_MgO_v9
This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details
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Cite this

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abstract = "Perpendicular magnetic anisotropy at an interface between Fe and MgO with Co-phthalocyanine (CoPc) adsorption has been investigated. We find that the CoPc adsorption at an Fe/MgO interface increases the perpendicular magnetic anisotropy energy (PMA) while maintaining the voltage-controlled magnetic anisotropy effect. By performing X-ray magnetic circular dichroism spectroscopy measurements, we reveal that the CoPc adsorption induces hole accumulation at the Fe surface. The origin of the PMA enhancement is attributed to the increased orbital magnetic moment anisotropy of the Fe atoms.",

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AU - Kawabe, Takeshi

AU - Sakamoto, Shoya

AU - Tsukahara, Takuya

AU - Kotani, Yoshinori

AU - Toyoki, Kentaro

AU - Minamitani, Emi

AU - Miura, Yoshio

AU - Nakamura, Tetsuya

AU - Hirohata, Atsufumi

AU - Miwa, Shinji

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N2 - Perpendicular magnetic anisotropy at an interface between Fe and MgO with Co-phthalocyanine (CoPc) adsorption has been investigated. We find that the CoPc adsorption at an Fe/MgO interface increases the perpendicular magnetic anisotropy energy (PMA) while maintaining the voltage-controlled magnetic anisotropy effect. By performing X-ray magnetic circular dichroism spectroscopy measurements, we reveal that the CoPc adsorption induces hole accumulation at the Fe surface. The origin of the PMA enhancement is attributed to the increased orbital magnetic moment anisotropy of the Fe atoms.

AB - Perpendicular magnetic anisotropy at an interface between Fe and MgO with Co-phthalocyanine (CoPc) adsorption has been investigated. We find that the CoPc adsorption at an Fe/MgO interface increases the perpendicular magnetic anisotropy energy (PMA) while maintaining the voltage-controlled magnetic anisotropy effect. By performing X-ray magnetic circular dichroism spectroscopy measurements, we reveal that the CoPc adsorption induces hole accumulation at the Fe surface. The origin of the PMA enhancement is attributed to the increased orbital magnetic moment anisotropy of the Fe atoms.

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