Controllable magnetic anisotropy and ferroelasticity in superconducting FeSe monolayer with surface fluorine adsorption

Abstract

Controllable magnetization in atomically thin two-dimensional magnets is highly desirable for developing spintronics. For FeSe monolayer, its magnetic ground state is not yet fully understood, and the potential in constructing high-speed and advanced devices remains unknown. Using density functional theory calculations, we confirm the spin ordering of monolayer FeSe to be dimer texture. With Fluorine (F) adsorption (F/FeSe), the system exhibits a coverage dependent magnetic anisotropy and multiferroicity which can be attributable to the Jahn-Teller effect, being the benefit to potential spintronic applications. Intriguingly, an inherent coupling between magnetism and ferroelasticity in the most energetically favorable F/FeSe system is proposed. Our study thus not only provides a promising way to control the spintronic properties and construct multiferroics, but also renders F/FeSe an ideal platform for magnetism studies and practical high-performance multifunctional devices.

13 pages, 5 figures

References in corpus (31)

• Discovery of intrinsic ferromagnetism in 2D van der Waals crystals
• Superconductivity at 43 K in Samarium-arsenide Oxides $SmFeAs{O}_{1-x}{F}_x$
• Interface induced high temperature superconductivity in single unit-cell FeSe films on SrTiO3
• The interlayer cohesive energy of graphite from thermal desorption of polyaromatic hydrocarbons
• Superconductivity in single-layer films of FeSe with a transition temperature above 100 K
• Electric-field switching of two-dimensional van der Waals magnets
• Magnetic order in BaFe2As2, the parent compound of the FeAs based superconductors in a new structural family
• Structural and magnetic phase diagram of CeFeAsO1-xFx and its relationship to high-temperature superconductivity
• Macroscopic graphene membranes and their extraordinary stiffness
• Electrically controlled long-distance spin transport through an antiferromagnetic insulator
• Fe-based high temperature superconductivity with Tc=31K bordering an insulating antiferromagnet in (Tl,K)FexSe2 Crystals
• Structure determination and coexistence of superconductivity and antiferromagnetic order in (Li0.8Fe0.2)OHFeSe
• Reversible Fluorination of Graphene: towards a Two-Dimensional Wide Bandgap Semiconductor
• Reemerging superconductivity at 48 K across quantum criticality in iron chalcogenides
• Tailoring Magnetic Anisotropy in Cr${}_2$Ge${}_2$Te${}_6$ by Electrostatic Gating
• Multiferroic Two-Dimensional Materials
• Structural and magnetic phase transitions in the ternary iron arsenides SrFe2As2 and EuFe2As2
• Continuous Symmetry Breaking in a Two-dimensional Rydberg Array
• Anomalous correlation effects and unique phase diagram of electron doped FeSe revealed by angle resolved photoemission spectroscopy
• Synthesis and Properties of CaFe${}_2$As${}_2$ Single Crystals
• Enhanced superconductivity and evidence for novel pairing in single-layer FeSe on SrTiO3 thin film under large tensile strain
• Long-distance spin-transport across the Morin phase transition up to room temperature in ultra-low damping single crystals of the antiferromagnet α-Fe2O3
• High-Temperature Quantum Anomalous Hall Insulators in Lithium-Decorated Iron-Based Superconductor Materials
• Perspective on Metallic Antiferromagnets
• Antiferromagnetic ground state with pair-checkboard order in FeSe
• Electrically tunable magnetism and unique intralayer charge transfer in Janus monolayer MnSSe for spintronics applications
• Antiferromagnetic order in epitaxial FeSe films on SrTiO3
• Fragile topologically flat band in the checkerboard antiferromagnetic monolayer FeSe
• Peierls transition driven ferroelasticity in two-dimensional $d$-$f$ hybrid magnet
• Evolution of transport properties in FeSe thin flakes with thickness approaching the two-dimensional limit
• Metal adsorption and nucleation on free-standing graphene by low-energy electron point source microscopy (graphene intercalation)