Please use this identifier to cite or link to this item: http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/9022
Title: Robust magnetism and phase transitions in ultrathin Na2⁢IrO3 flakes
Authors: ROY, DEEPAK K.
KABIR, MUKUL
Dept. of Physics
Keywords: Liquid
Physics
2024
2024-JUL-WEEK3
TOC-JUL-2024
Issue Date: Jul-2024
Publisher: American Physical Society
Citation: Physical Review B, 110(02),  L020403.
Abstract: Competing spin-orbit coupling, electron correlation, and structural distortion are crucial factors influencing the physics of oxides, including iridates. We investigate ultrathin chemically bonded layered Na2⁢IrO3, which exhibits characteristics of a proximate quantum spin liquid in its bulk form. Employing first-principles calculations, we explore the interplay between Heisenberg and Kitaev interactions within the two-dimensional limit. Contrary to the conventional understanding of van der Waals materials, magnetism in ultrathin Na2⁢IrO3 is reinforced in the two-dimensional limit. As the zigzag antiferromagnetic state stabilizes, it diverges further from the Kitaev spin-liquid state due to enhanced Heisenberg and off-diagonal exchange interactions. Furthermore, carrier doping can tune the electronic and magnetic states, resulting in combined Mott insulator-to-metal and antiferromagnetic-to-ferromagnetic transitions. These findings provide compelling insights into the magnetism of a two-dimensional realm in non-van der Waals correlated oxide flakes.
URI: https://doi.org/10.1103/PhysRevB.110.L020403
http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/9022
ISSN: 2469-9969
2469-9950 
Appears in Collections:JOURNAL ARTICLES

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