Enhancement of spin correlation in Cr2O3 Film above Néel temperature induced by forming a junction with Fe2O3 Layer: First-principles and monte-carlo study

Yohei Kota; Hiroshi Imamura; Munetaka Sasaki

doi:10.1109/TMAG.2014.2324014

Enhancement of spin correlation in Cr₂O₃ Film above Néel temperature induced by forming a junction with Fe₂O₃ Layer: First-principles and monte-carlo study

Yohei Kota, Hiroshi Imamura, Munetaka Sasaki

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

6 Citations (Scopus)

Abstract

We propose an approach to enhance the antiferromagnetic spin correlation in the Cr₂O₃ film by forming a junction with the Fe₂O₃ layer. First-principles calculations and Monte-Carlo simulations were performed to evaluate the exchange coupling constant between the Cr and Fe spin and the spin correlation functions of the Fe₂O₃/Cr₂O₃ bilayer system in a finite temperature. We found that above the Néel temperature of Cr₂O₃, the length of the antiferromagnetic spin correlation in the bilayer system is increased by more than twice as that of the bulk system.

Original language	English
Article number	6971656
Journal	IEEE Transactions on Magnetics
Volume	50
Issue number	11
DOIs	https://doi.org/10.1109/TMAG.2014.2324014
Publication status	Published - 2014 Nov 1
Externally published	Yes

Keywords

Classical Heisenberg model
CrO
FeO
Monte-Carlo simulation
first-principles calculation
spin correlation

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

Access to Document

10.1109/TMAG.2014.2324014

Cite this

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title = "Enhancement of spin correlation in Cr2O3 Film above N{\'e}el temperature induced by forming a junction with Fe2O3 Layer: First-principles and monte-carlo study",

abstract = "We propose an approach to enhance the antiferromagnetic spin correlation in the Cr2O3 film by forming a junction with the Fe2O3 layer. First-principles calculations and Monte-Carlo simulations were performed to evaluate the exchange coupling constant between the Cr and Fe spin and the spin correlation functions of the Fe2O3/Cr2O3 bilayer system in a finite temperature. We found that above the N{\'e}el temperature of Cr2O3, the length of the antiferromagnetic spin correlation in the bilayer system is increased by more than twice as that of the bulk system.",

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T2 - First-principles and monte-carlo study

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AU - Imamura, Hiroshi

AU - Sasaki, Munetaka

PY - 2014/11/1

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N2 - We propose an approach to enhance the antiferromagnetic spin correlation in the Cr2O3 film by forming a junction with the Fe2O3 layer. First-principles calculations and Monte-Carlo simulations were performed to evaluate the exchange coupling constant between the Cr and Fe spin and the spin correlation functions of the Fe2O3/Cr2O3 bilayer system in a finite temperature. We found that above the Néel temperature of Cr2O3, the length of the antiferromagnetic spin correlation in the bilayer system is increased by more than twice as that of the bulk system.

AB - We propose an approach to enhance the antiferromagnetic spin correlation in the Cr2O3 film by forming a junction with the Fe2O3 layer. First-principles calculations and Monte-Carlo simulations were performed to evaluate the exchange coupling constant between the Cr and Fe spin and the spin correlation functions of the Fe2O3/Cr2O3 bilayer system in a finite temperature. We found that above the Néel temperature of Cr2O3, the length of the antiferromagnetic spin correlation in the bilayer system is increased by more than twice as that of the bulk system.

KW - Classical Heisenberg model

KW - CrO

KW - FeO

KW - Monte-Carlo simulation

KW - first-principles calculation

KW - spin correlation

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