Magnetic Properties of Transition Metal-Doped Two-Dimensional Semiconductors

Two-dimensional semiconductors doped with transition metals have emerged as a versatile platform for engineering spin phenomena at the atomic scale. In their pristine form, monolayer transition metal dichalcogenides and related van der Waals materials lack intrinsic magnetic order, but the introduction of dilute magnetic ions can induce ferromagnetic or antiferromagnetic coupling via exchange interactions. This modulation of magnetic behaviour depends critically on dopant species, concentration, site occupancy and the presence of vacancies or heterostructure interfaces. The resulting magnetic phases, often persisting up to and above room temperature, offer promising routes to spintronic devices that exploit both charge and spin degrees of freedom. Practical realisation hinges on achieving uniform substitutional doping, minimising clustering of magnetic centres and preserving the semiconducting band structure. Advanced growth methods, combined with theoretical modelling, now enable systematic tuning of Curie temperatures, magnetic anisotropies and spin coherence, paving the way for integrated 2D magneto-electronic technologies.

Research from Nature Portfolio

First-principles investigations into cobalt-substituted molybdenum disulphide monolayers have demonstrated that Co atoms occupying Mo sites give rise to spin-polarised states and ferromagnetic coupling when assisted by judiciously engineered vacancy concentrations. Such theoretical work identifies pathways to intrinsic diluted magnetic semiconductors by showing that isolated cobalt dopants favour uniform distribution and energetically stable ferromagnetic alignment. Complementary experiments have achieved in situ iron doping during chemical vapour deposition of MoS2, yielding monolayers in which Fe-substitution produces robust ferromagnetic hysteresis at ambient conditions. High-resolution microscopy confirms substitutional incorporation, while spectroscopic signatures and magnetometry reveal room-temperature ferromagnetism linked to Fe-related electronic transitions. These results underscore the power of combining bottom-up growth and atomic-scale characterisation to realise scalable, two-dimensional magnetic semiconductors.

Magnetic Properties of Transition Metal-Doped Two-Dimensional Semiconductors publication trend

The graph below shows the total number of articles in magnetic properties of transition metal-doped two-dimensional semiconductors across all publications each year (not limited to Nature Index journals).

Technical terms

Dilute Magnetic Semiconductor (DMS): a semiconductor in which a small fraction of host atoms are replaced by magnetic ions to induce collective spin ordering.

Curie Temperature: the critical temperature above which a ferromagnetic or ferrimagnetic material loses its spontaneous magnetisation.

Chemical Vapour Deposition (CVD): a vapour-phase technique for growing thin films and monolayers by chemical reaction of gaseous precursors on a substrate.

Density Functional Theory (DFT): a quantum mechanical modelling method used to predict electronic structure and related properties of materials from first principles.

References

1. Electronic and magnetic properties of Co doped MoS2 monolayer. Scientific Reports (2016).
2. Enabling room temperature ferromagnetism in monolayer MoS2 via in situ iron-doping. Nature Communications (2020).
3. Emerging Enhancement and Regulation Strategies for Ferromagnetic 2D Transition Metal Dichalcogenides. Advanced Science (2023).
4. Magnetic order and critical temperature of substitutionally doped transition metal dichalcogenide monolayers. npj 2D Materials and Applications (2021).
5. Monolayer Vanadium‐Doped Tungsten Disulfide: A Room‐Temperature Dilute Magnetic Semiconductor. Advanced Science (2020).