Stability of edge magnetism against disorder in zigzag MoS2 nanoribbons

Péter Vancsó, Imre Hagymási, Pauline Castenetto, Philippe Lambin

Research output: Contribution to journalArticle

Abstract

Molybdenum disulfide nanoribbons with zigzag edges show ferromagnetic and metallic properties based on previous ab-initio calculations. The investigation of the role of disorder on the magnetic properties is, however, still lacking due to the computational costs of these methods. In this work we fill this gap by studying the magnetic and electronic properties of several nanometer long MoS2 zigzag nanoribbons using tight-binding and Hubbard Hamiltonians. Our results reveal that proper tight-binding parameters for the edge atoms are crucial to obtain quantitatively the metallic states and the magnetic properties of MoS2 nanoribbons. With the help of the fine-tuned parameters, we perform large-scale calculations and predict the spin domain-wall energy along the edges, which is found to be significantly lower compared to that of the zigzag graphene nanoribbons. The tight- binding approach allows us to address the effect of edge disorder on the magnetic properties. Our results open the way for investigating electron-electron effects in realistic-size nanoribbon devices in MoS2 and also provide valuable information for spintronic applications.
Original languageEnglish
Article number 094003
Number of pages8
JournalPhysical Review Materials
Volume3
Issue number9
Publication statusPublished - 10 Sep 2019

Fingerprint

disorders
magnetic properties
molybdenum disulfides
domain wall
graphene
electrons
costs
electronics
atoms
energy

Cite this

@article{c77e9804a650474082730a2bed152ca6,
title = "Stability of edge magnetism against disorder in zigzag MoS2 nanoribbons",
abstract = "Molybdenum disulfide nanoribbons with zigzag edges show ferromagnetic and metallic properties based on previous ab-initio calculations. The investigation of the role of disorder on the magnetic properties is, however, still lacking due to the computational costs of these methods. In this work we fill this gap by studying the magnetic and electronic properties of several nanometer long MoS2 zigzag nanoribbons using tight-binding and Hubbard Hamiltonians. Our results reveal that proper tight-binding parameters for the edge atoms are crucial to obtain quantitatively the metallic states and the magnetic properties of MoS2 nanoribbons. With the help of the fine-tuned parameters, we perform large-scale calculations and predict the spin domain-wall energy along the edges, which is found to be significantly lower compared to that of the zigzag graphene nanoribbons. The tight- binding approach allows us to address the effect of edge disorder on the magnetic properties. Our results open the way for investigating electron-electron effects in realistic-size nanoribbon devices in MoS2 and also provide valuable information for spintronic applications.",
author = "P{\'e}ter Vancs{\'o} and Imre Hagymási and Pauline Castenetto and Philippe Lambin",
year = "2019",
month = "9",
day = "10",
language = "English",
volume = "3",
journal = "Physical Review Materials",
issn = "2475-9953",
publisher = "American Physical Society",
number = "9",

}

Stability of edge magnetism against disorder in zigzag MoS2 nanoribbons. / Vancsó, Péter; Hagymási, Imre; Castenetto, Pauline; Lambin, Philippe.

In: Physical Review Materials, Vol. 3, No. 9, 094003, 10.09.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Stability of edge magnetism against disorder in zigzag MoS2 nanoribbons

AU - Vancsó, Péter

AU - Hagymási, Imre

AU - Castenetto, Pauline

AU - Lambin, Philippe

PY - 2019/9/10

Y1 - 2019/9/10

N2 - Molybdenum disulfide nanoribbons with zigzag edges show ferromagnetic and metallic properties based on previous ab-initio calculations. The investigation of the role of disorder on the magnetic properties is, however, still lacking due to the computational costs of these methods. In this work we fill this gap by studying the magnetic and electronic properties of several nanometer long MoS2 zigzag nanoribbons using tight-binding and Hubbard Hamiltonians. Our results reveal that proper tight-binding parameters for the edge atoms are crucial to obtain quantitatively the metallic states and the magnetic properties of MoS2 nanoribbons. With the help of the fine-tuned parameters, we perform large-scale calculations and predict the spin domain-wall energy along the edges, which is found to be significantly lower compared to that of the zigzag graphene nanoribbons. The tight- binding approach allows us to address the effect of edge disorder on the magnetic properties. Our results open the way for investigating electron-electron effects in realistic-size nanoribbon devices in MoS2 and also provide valuable information for spintronic applications.

AB - Molybdenum disulfide nanoribbons with zigzag edges show ferromagnetic and metallic properties based on previous ab-initio calculations. The investigation of the role of disorder on the magnetic properties is, however, still lacking due to the computational costs of these methods. In this work we fill this gap by studying the magnetic and electronic properties of several nanometer long MoS2 zigzag nanoribbons using tight-binding and Hubbard Hamiltonians. Our results reveal that proper tight-binding parameters for the edge atoms are crucial to obtain quantitatively the metallic states and the magnetic properties of MoS2 nanoribbons. With the help of the fine-tuned parameters, we perform large-scale calculations and predict the spin domain-wall energy along the edges, which is found to be significantly lower compared to that of the zigzag graphene nanoribbons. The tight- binding approach allows us to address the effect of edge disorder on the magnetic properties. Our results open the way for investigating electron-electron effects in realistic-size nanoribbon devices in MoS2 and also provide valuable information for spintronic applications.

M3 - Article

VL - 3

JO - Physical Review Materials

JF - Physical Review Materials

SN - 2475-9953

IS - 9

M1 - 094003

ER -