Anisotropic 2D van der Waals Magnets Hosting 1D Spin Chains

[Article in Dutch]

Eugene Park¹, John P Philbin², Hang Chi^{3

4

5}, Joshua J Sanchez⁶, Connor Occhialini⁶, Georgios Varnavides^{7

8}, Jonathan B Curtis², Zhigang Song⁹, Julian Klein¹, Joachim D Thomsen^{1

2}, Myung-Geun Han¹⁰, Alexandre C Foucher¹, Kseniia Mosina¹¹, Deepika Kumawat^{6

12}, N Gonzalez-Yepez⁶, Yimei Zhu¹⁰, Zdeněk Sofer¹¹, Riccardo Comin⁶, Jagadeesh S Moodera^{3

6}, Prineha Narang², Frances M Ross¹

Affiliations

¹ Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
² College of Letters and Science, University of California, Los Angeles, CA, 90095, USA.
³ Francis Bitter Magnet Laboratory, Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
⁴ Department of Physics, University of Ottawa, Ottawa, ON, K1N 6N5, Canada.
⁵ Nexus for Quantum Technologies, University of Ottawa, Ottawa, ON, K1N 6N5, Canada.
⁶ Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
⁷ Miller Institute for Basic Research in Science, University of California, Berkeley, CA, 94720, USA.
⁸ National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
⁹ John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02139, USA.
¹⁰ Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY, 11973, USA.
¹¹ Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technická 5, Prague, 166 28, Czech Republic.
¹² Department of Physics, Mount Holyoke College, South Hadley, MA, 01075, USA.

PMID: 38795019
DOI: 10.1002/adma.202401534

Free article

Anisotropic 2D van der Waals Magnets Hosting 1D Spin Chains

[Article in Dutch]

Eugene Park et al. Adv Mater. 2024 Aug.

Free article

. 2024 Aug;36(31):e2401534.

doi: 10.1002/adma.202401534. Epub 2024 Jun 3.

Authors

Affiliations

¹ Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
² College of Letters and Science, University of California, Los Angeles, CA, 90095, USA.
³ Francis Bitter Magnet Laboratory, Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
⁴ Department of Physics, University of Ottawa, Ottawa, ON, K1N 6N5, Canada.
⁵ Nexus for Quantum Technologies, University of Ottawa, Ottawa, ON, K1N 6N5, Canada.
⁶ Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
⁷ Miller Institute for Basic Research in Science, University of California, Berkeley, CA, 94720, USA.
⁸ National Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
⁹ John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02139, USA.
¹⁰ Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY, 11973, USA.
¹¹ Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technická 5, Prague, 166 28, Czech Republic.
¹² Department of Physics, Mount Holyoke College, South Hadley, MA, 01075, USA.

PMID: 38795019
DOI: 10.1002/adma.202401534

Abstract

The exploration of 1D magnetism, frequently portrayed as spin chains, constitutes an actively pursued research field that illuminates fundamental principles in many-body problems and applications in magnonics and spintronics. The inherent reduction in dimensionality often leads to robust spin fluctuations, impacting magnetic ordering and resulting in novel magnetic phenomena. Here, structural, magnetic, and optical properties of highly anisotropic 2D van der Waals antiferromagnets that uniquely host spin chains are explored. First-principle calculations reveal that the weakest interaction is interchain, leading to essentially 1D magnetic behavior in each layer. With the additional degree of freedom arising from its anisotropic structure, the structure is engineered by alloying, varying the 1D spin chain lengths using electron beam irradiation, or twisting for localized patterning, and spin textures are calculated, predicting robust stability of the antiferromagnetic ordering. Comparing with other spin chain magnets, these materials are anticipated to bring fresh perspectives on harvesting low-dimensional magnetism.

Keywords: 1D magnetism; 2D magnets; 2D materials; scanning transmission electron microscopy.

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References

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Anisotropic 2D van der Waals Magnets Hosting 1D Spin Chains

Affiliations

Anisotropic 2D van der Waals Magnets Hosting 1D Spin Chains

Authors

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Abstract

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