Related Experiment Video
Updated: Jul 20, 2025
09:25
Fabricating van der Waals Heterostructures with Precise Rotational Alignment
Published on: July 5, 2019
9.5K
Proximity-Induced Tunable Magnetic Order at the Interface of All-van der Waals-Layered Heterostructures
Eun-Mi Choi1,2, Taesoo Kim1,2,3, Byeong Wook Cho1,2,3
1Center for Integrated Nanostructure Physics, Institute for Basic Science (IBS), Suwon 16419, Republic of Korea.
ACS Nano
|July 31, 2023
Summary
Spin-orbit coupling (SOC) in van der Waals heterostructures controls magnetic ordering. This study shows interface engineering via SOC-proximity effects enables novel spintronic device functionalities.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Spintronics
Background:
- Spin-orbit coupling (SOC) is vital for spin-charge conversion, spin torque, and magnetic phenomena.
- Understanding SOC's influence on ferromagnetism in heterostructures is key for advanced spintronics.
Purpose of the Study:
- Investigate the interplay between SOC and ferromagnetism in Fe3GeTe2/W1-xVxSe2 heterostructures.
- Demonstrate the impact of SOC-proximity effects on magnetic ordering at interfaces.
- Explore potential for interface-tailored spintronic devices.
Main Methods:
- Fabrication of all-van der Waals heterostructures (Fe3GeTe2/W1-xVxSe2).
- Systematic variation of SOC strength by doping (x = 0 and 0.05).
- Characterization of magnetic ordering and switching phenomena at the heterostructure interface.
Main Results:
- Observed diverse magnetic orderings (spin-flop, spin-flip, inverted magnetization) induced by varying SOC strength.
- Demonstrated sharp antiferromagnetic to ferromagnetic switching in FGT/W0.95V0.05Se2, indicative of synthetic antiferromagnetism.
- Highlighted the significant role of SOC-proximity effects in determining interfacial magnetic properties.
Conclusions:
- Interface engineering via SOC-proximity effects in van der Waals heterostructures offers tunable magnetic properties.
- This approach enables the development of next-generation spintronic devices, such as 2D MRAM toggle switching.
- Findings provide fundamental insights for designing novel spintronic applications.
Keywords:
proximity effectspintronicsspin−orbit couplingtunable magnetic ordertwo-dimensional vdW heterostructureMore Related Videos
13:56Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations
Published on: October 12, 2019
7.7K
09:06Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
8.1K
Related Concept Videos
01:31Ferromagnetism
2.4K
Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...
2.4K
01:28Magnetostatic Boundary Conditions
1.0K
An electric field suffers a discontinuity at a surface charge. Similarly, a magnetic field is discontinuous at a surface current. The perpendicular component of a magnetic field is continuous across the interface of two magnetic mediums. In contrast, its parallel component, perpendicular to the current, is discontinuous by the amount equal to the product of the vacuum permeability and the surface current. Like the scalar potential in electrostatics, the vector potential is also continuous...
1.0K
01:27π Electron Effects on Chemical Shift: Overview
1.1K
An applied magnetic field causes loosely bound π-electrons in organic molecules to circulate, producing a local or induced diamagnetic field over a large spatial volume. As the molecules tumble in solution, the field generated by π-electrons in spherical substituents results in a zero net field. However, the net field generated by π-electrons in non-spherical substituents is not zero. The effect of this induced field depends on the orientation of the molecule with respect to B0,...
1.1K
01:30Paramagnetism
2.5K
Paramagnets are materials with unpaired electrons that possess a finite magnetic moment. In the absence of a magnetic field, these moments are randomly oriented, and thus the net moment is zero. Under an external field, a torque acting on the moments tends to align them along the field's direction. However, the random thermal motion of electrons produces a torque opposite to the external field and tries to disorient the moments. These two competing effects align only a few moments along the...
2.5K
01:02¹H NMR: Interpreting Distorted and Overlapping Signals
1.1K
Spin systems where the difference in chemical shifts of the coupled nuclei is greater than ten times J are called first-order spin systems. These nuclei are weakly coupled, and their chemical shifts and coupling constant can generally be estimated from the well-separated signals in the spectrum.
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are...
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are...
1.1K
03:02Colors and Magnetism
11.9K
Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
11.9K