Bulk properties of the van der Waals hard ferromagnet VI3

Suhan Son, Matthew J. Coak, Nahyun Lee, Jonghyeon Kim, Tae Yun Kim, Hayrullo Hamidov, Hwanbeom Cho, Cheng Liu, David M. Jarvis, Philip A.C. Brown, Jae Hoon Kim, Cheol Hwan Park, Daniel I. Khomskii, Siddharth S. Saxena, Je Geun Park

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

We present comprehensive measurements of the structural, magnetic, and electronic properties of layered van der Waals ferromagnet VI3 down to low temperatures. Despite belonging to a well-studied family of transition-metal trihalides, this material has received very little attention. We outline, from high-resolution powder x-ray diffraction measurements, a corrected room-temperature crystal structure to that previously proposed and uncover a structural transition at 79 K, also seen in the heat capacity. Magnetization measurements confirm VI3 to be a hard ferromagnet (9.1 kOe coercive field at 2 K) with a high degree of anisotropy, and the pressure dependence of the magnetic properties provide evidence for the two-dimensional nature of the magnetic order. Optical and electrical transport measurements show this material to be an insulator with an optical band gap of 0.67 eV - the previous theoretical predictions of d-band metallicity then lead us to believe VI3 to be a correlated Mott insulator. Our latest band-structure calculations support this picture and show good agreement with the experimental data. We suggest VI3 to host great potential in the thriving field of low-dimensional magnetism and functional materials, together with opportunities to study and make use of low-dimensional Mott physics.

Original languageEnglish
Article number041402
JournalPhysical Review B
Volume99
Issue number4
DOIs
Publication statusPublished - 2019 Jan 7

Fingerprint

Magnetic properties
insulators
magnetic properties
Functional materials
Optical band gaps
Magnetism
Electronic properties
Band structure
Powders
pressure dependence
Specific heat
metallicity
Transition metals
Structural properties
Magnetization
Anisotropy
x ray diffraction
Physics
Diffraction
Crystal structure

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Son, S., Coak, M. J., Lee, N., Kim, J., Kim, T. Y., Hamidov, H., ... Park, J. G. (2019). Bulk properties of the van der Waals hard ferromagnet VI3. Physical Review B, 99(4), [041402]. https://doi.org/10.1103/PhysRevB.99.041402
Son, Suhan ; Coak, Matthew J. ; Lee, Nahyun ; Kim, Jonghyeon ; Kim, Tae Yun ; Hamidov, Hayrullo ; Cho, Hwanbeom ; Liu, Cheng ; Jarvis, David M. ; Brown, Philip A.C. ; Kim, Jae Hoon ; Park, Cheol Hwan ; Khomskii, Daniel I. ; Saxena, Siddharth S. ; Park, Je Geun. / Bulk properties of the van der Waals hard ferromagnet VI3. In: Physical Review B. 2019 ; Vol. 99, No. 4.
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abstract = "We present comprehensive measurements of the structural, magnetic, and electronic properties of layered van der Waals ferromagnet VI3 down to low temperatures. Despite belonging to a well-studied family of transition-metal trihalides, this material has received very little attention. We outline, from high-resolution powder x-ray diffraction measurements, a corrected room-temperature crystal structure to that previously proposed and uncover a structural transition at 79 K, also seen in the heat capacity. Magnetization measurements confirm VI3 to be a hard ferromagnet (9.1 kOe coercive field at 2 K) with a high degree of anisotropy, and the pressure dependence of the magnetic properties provide evidence for the two-dimensional nature of the magnetic order. Optical and electrical transport measurements show this material to be an insulator with an optical band gap of 0.67 eV - the previous theoretical predictions of d-band metallicity then lead us to believe VI3 to be a correlated Mott insulator. Our latest band-structure calculations support this picture and show good agreement with the experimental data. We suggest VI3 to host great potential in the thriving field of low-dimensional magnetism and functional materials, together with opportunities to study and make use of low-dimensional Mott physics.",
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Son, S, Coak, MJ, Lee, N, Kim, J, Kim, TY, Hamidov, H, Cho, H, Liu, C, Jarvis, DM, Brown, PAC, Kim, JH, Park, CH, Khomskii, DI, Saxena, SS & Park, JG 2019, 'Bulk properties of the van der Waals hard ferromagnet VI3', Physical Review B, vol. 99, no. 4, 041402. https://doi.org/10.1103/PhysRevB.99.041402

Bulk properties of the van der Waals hard ferromagnet VI3. / Son, Suhan; Coak, Matthew J.; Lee, Nahyun; Kim, Jonghyeon; Kim, Tae Yun; Hamidov, Hayrullo; Cho, Hwanbeom; Liu, Cheng; Jarvis, David M.; Brown, Philip A.C.; Kim, Jae Hoon; Park, Cheol Hwan; Khomskii, Daniel I.; Saxena, Siddharth S.; Park, Je Geun.

In: Physical Review B, Vol. 99, No. 4, 041402, 07.01.2019.

Research output: Contribution to journalArticle

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T1 - Bulk properties of the van der Waals hard ferromagnet VI3

AU - Son, Suhan

AU - Coak, Matthew J.

AU - Lee, Nahyun

AU - Kim, Jonghyeon

AU - Kim, Tae Yun

AU - Hamidov, Hayrullo

AU - Cho, Hwanbeom

AU - Liu, Cheng

AU - Jarvis, David M.

AU - Brown, Philip A.C.

AU - Kim, Jae Hoon

AU - Park, Cheol Hwan

AU - Khomskii, Daniel I.

AU - Saxena, Siddharth S.

AU - Park, Je Geun

PY - 2019/1/7

Y1 - 2019/1/7

N2 - We present comprehensive measurements of the structural, magnetic, and electronic properties of layered van der Waals ferromagnet VI3 down to low temperatures. Despite belonging to a well-studied family of transition-metal trihalides, this material has received very little attention. We outline, from high-resolution powder x-ray diffraction measurements, a corrected room-temperature crystal structure to that previously proposed and uncover a structural transition at 79 K, also seen in the heat capacity. Magnetization measurements confirm VI3 to be a hard ferromagnet (9.1 kOe coercive field at 2 K) with a high degree of anisotropy, and the pressure dependence of the magnetic properties provide evidence for the two-dimensional nature of the magnetic order. Optical and electrical transport measurements show this material to be an insulator with an optical band gap of 0.67 eV - the previous theoretical predictions of d-band metallicity then lead us to believe VI3 to be a correlated Mott insulator. Our latest band-structure calculations support this picture and show good agreement with the experimental data. We suggest VI3 to host great potential in the thriving field of low-dimensional magnetism and functional materials, together with opportunities to study and make use of low-dimensional Mott physics.

AB - We present comprehensive measurements of the structural, magnetic, and electronic properties of layered van der Waals ferromagnet VI3 down to low temperatures. Despite belonging to a well-studied family of transition-metal trihalides, this material has received very little attention. We outline, from high-resolution powder x-ray diffraction measurements, a corrected room-temperature crystal structure to that previously proposed and uncover a structural transition at 79 K, also seen in the heat capacity. Magnetization measurements confirm VI3 to be a hard ferromagnet (9.1 kOe coercive field at 2 K) with a high degree of anisotropy, and the pressure dependence of the magnetic properties provide evidence for the two-dimensional nature of the magnetic order. Optical and electrical transport measurements show this material to be an insulator with an optical band gap of 0.67 eV - the previous theoretical predictions of d-band metallicity then lead us to believe VI3 to be a correlated Mott insulator. Our latest band-structure calculations support this picture and show good agreement with the experimental data. We suggest VI3 to host great potential in the thriving field of low-dimensional magnetism and functional materials, together with opportunities to study and make use of low-dimensional Mott physics.

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Son S, Coak MJ, Lee N, Kim J, Kim TY, Hamidov H et al. Bulk properties of the van der Waals hard ferromagnet VI3. Physical Review B. 2019 Jan 7;99(4). 041402. https://doi.org/10.1103/PhysRevB.99.041402