Tuning Magnetic Soliton Phase via Dimensional Confinement in Exfoliated 2D Cr1/3NbS2 Thin Flakes

Siwei Tang; Randy S. Fishman; Satoshi Okamoto; Jieyu Yi; Qiang Zou; Mingming Fu; An Ping Li; David Mandrus; Zheng Gai

doi:10.1021/acs.nanolett.8b01546

Tuning Magnetic Soliton Phase via Dimensional Confinement in Exfoliated 2D Cr_1/3NbS₂ Thin Flakes

Siwei Tang, Randy S. Fishman, Satoshi Okamoto, Jieyu Yi, Qiang Zou, Mingming Fu, An Ping Li, David Mandrus, Zheng Gai

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

19 Scopus citations

Abstract

Thin flakes of Cr_1/3NbS₂ are fabricated successfully via microexfoliation techniques. Temperature-dependent and field-dependent magnetizations of thin flakes with various thicknesses are investigated. When the thickness of the flake is around several hundred nanometers, the softening and eventual disappearance of the bulk soliton peak is accompanied by the appearance of other magnetic peaks at lower magnetic fields. The emergence and annihilation of the soliton peaks are explained and simulated theoretically by the change in spin spiral number inside the soliton lattice due to dimensional confinement. Compared to the conventional magnetic states in nanoscale materials, the stability and thickness tunability of quantified spin spirals make Cr_1/3NbS₂ a potential candidate for spintronics nanodevices beyond Moore's law.

Original language	English
Pages (from-to)	4023-4028
Number of pages	6
Journal	Nano Letters
Volume	18
Issue number	6
DOIs	https://doi.org/10.1021/acs.nanolett.8b01546
State	Published - Jun 13 2018

Funding

The experimental part of this research was conducted at the Center for Nanophase Materials Sciences, which is a DOE Office of Science User Facility. Part of the theoretical calculation (R.S.F.) was supported by LDRD project 7362. The research by S.O. is supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division.

Funders	Funder number
U.S. Department of Energy
Office of Science
Basic Energy Sciences
Laboratory Directed Research and Development	7362
Division of Materials Sciences and Engineering

Keywords

2D materials
dimensional confinement
ferromagnetism
helimagnetism
soliton

Access to Document

10.1021/acs.nanolett.8b01546

Cite this

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title = "Tuning Magnetic Soliton Phase via Dimensional Confinement in Exfoliated 2D Cr1/3NbS2 Thin Flakes",

abstract = "Thin flakes of Cr1/3NbS2 are fabricated successfully via microexfoliation techniques. Temperature-dependent and field-dependent magnetizations of thin flakes with various thicknesses are investigated. When the thickness of the flake is around several hundred nanometers, the softening and eventual disappearance of the bulk soliton peak is accompanied by the appearance of other magnetic peaks at lower magnetic fields. The emergence and annihilation of the soliton peaks are explained and simulated theoretically by the change in spin spiral number inside the soliton lattice due to dimensional confinement. Compared to the conventional magnetic states in nanoscale materials, the stability and thickness tunability of quantified spin spirals make Cr1/3NbS2 a potential candidate for spintronics nanodevices beyond Moore's law.",

keywords = "2D materials, dimensional confinement, ferromagnetism, helimagnetism, soliton",

author = "Siwei Tang and Fishman, {Randy S.} and Satoshi Okamoto and Jieyu Yi and Qiang Zou and Mingming Fu and Li, {An Ping} and David Mandrus and Zheng Gai",

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AU - Tang, Siwei

AU - Fishman, Randy S.

AU - Okamoto, Satoshi

AU - Yi, Jieyu

AU - Zou, Qiang

AU - Fu, Mingming

AU - Li, An Ping

AU - Mandrus, David

AU - Gai, Zheng

PY - 2018/6/13

Y1 - 2018/6/13

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AB - Thin flakes of Cr1/3NbS2 are fabricated successfully via microexfoliation techniques. Temperature-dependent and field-dependent magnetizations of thin flakes with various thicknesses are investigated. When the thickness of the flake is around several hundred nanometers, the softening and eventual disappearance of the bulk soliton peak is accompanied by the appearance of other magnetic peaks at lower magnetic fields. The emergence and annihilation of the soliton peaks are explained and simulated theoretically by the change in spin spiral number inside the soliton lattice due to dimensional confinement. Compared to the conventional magnetic states in nanoscale materials, the stability and thickness tunability of quantified spin spirals make Cr1/3NbS2 a potential candidate for spintronics nanodevices beyond Moore's law.

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KW - helimagnetism

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