Tuning valley polarization in two-dimensional ferromagnetic heterostructures

2019 ◽  
Vol 7 (47) ◽  
pp. 14932-14937
Author(s):  
Yu-Yun Sun ◽  
Liyan Shang ◽  
Weiwei Ju ◽  
Yi-Peng An ◽  
Shi-Jing Gong ◽  
...  
Keyword(s):  
Proximity Effect ◽  
Two Dimensional ◽  
Valley Polarization ◽  
Magnetic Proximity Effect

Large and tunable valley polarization induced by magnetic proximity effect in MX2/Cr2Ge2Te6 (M = Mo, W; X = Se, Te) heterostructures.

Strong valley splitting in d 0 two-dimensional SnO induced by magnetic proximity effect

2021 ◽  
Vol 32 (22) ◽  
pp. 225201
Author(s):  
Changcheng Zhang ◽  
Shuo Zhang ◽  
Yifeng Lin ◽  
Junguang Tao ◽  
Lixiu Guan
Keyword(s):  
Proximity Effect ◽  
Two Dimensional ◽  
Valley Splitting ◽  
Magnetic Proximity Effect

Magnetic proximity effect induced spin-dependent electronic structure in two-dimensional SnO by half-metallic monolayer CrN ferromagnet

2019 ◽  
Vol 21 (13) ◽  
pp. 6984-6990 ◽  
Author(s):  
Kai Nie ◽  
Xiaocha Wang ◽  
Wenbo Mi
Keyword(s):  
Electronic Structure ◽  
Magnetic Anisotropy ◽  
Proximity Effect ◽  
Two Dimensional ◽  
Half Metallic ◽  
Magnetic Proximity Effect

The electronic structure and magnetic anisotropy of a 2D SnO/CrN heterostructure can be tailored by strains and interlayer distances.

scholarly journals Proximity effects in graphene and ferromagnetic CrBr3 van der Waals heterostructures

2019 ◽  
Vol 21 (46) ◽  
pp. 25788-25796 ◽  
Author(s):  
Sushant Kumar Behera ◽  
Mayuri Bora ◽  
Sapta Sindhu Paul Chowdhury ◽  
Pritam Deb
Keyword(s):  
Proximity Effect ◽  
Field Effect ◽  
Field Effect Transistor ◽  
Van Der Waals ◽  
Proximity Effects ◽  
Graphene Monolayer ◽  
Two Dimensional ◽  
Van Der Waals Heterostructure ◽  
Effect Transistor ◽  
Magnetic Proximity Effect

Schematic of the magnetic proximity effect in a van der Waals heterostructure formed by a graphene monolayer, induced by its interaction with a two-dimensional ferromagnet (CrBr3) for designing a single-gate field effect transistor.

Electrically controlled valley polarization in 2D buckled honeycomb structures

2021 ◽  
pp. 2150390
Author(s):  
Yu Sun ◽  
Zi-Lin Yuan ◽  
Qian-Ze Li ◽  
Cai-Xin Zhang ◽  
Ke-Qiu Chen ◽  
...  
Keyword(s):  
Bond Length ◽  
Spontaneous Polarization ◽  
Proximity Effect ◽  
Electric Polarization ◽  
Degree Of Freedom ◽  
Strain Effect ◽  
Honeycomb Structures ◽  
Electronegativity Difference ◽  
Valley Polarization ◽  
Magnetic Proximity Effect

Generating and manipulating valley polarization in a controlled method is significant. The inherently broken centrosymmetry of the buckled honeycomb structures gives it both ferroelectricity and valley degree of freedom, which provides an opportunity to realize electrically controlled valley polarization. In the first step, we explored the origin of buckling. The hexagonal structure is polar due to buckling of the surface, but the degree of buckling and the energy barrier to switching electric polarization are determined not solely by the chemical composition. We combined the electronegativity difference, bond length and the distribution of charge density to describe quantificationally the polarity of chemical bonds. It shows the characteristics of relatively long bond-length but relatively small electronegativity-difference. For exploring the ferroelectricity of buckling structures and the behavior of ferroelectric (FE) control of the valley degree of freedom, the [Formula: see text]-GaP is used as a model system to elucidate the strain effect on FE behavior and the magnetic proximity effect on the polarization and switching of valley. We found that the spontaneous polarization is positively correlated with the electronegativity difference within a certain range, and the compression strain can effectively manipulate spontaneous polarization and switch barrier. A combination of the magnetic proximity effect and the inversion of electric polarization can generate and switch valley polarization effectively.

Two-dimensional intrinsic ferrovalley GdI2 with large valley polarization

2021 ◽  
Vol 103 (12) ◽  
Author(s):  
Hai-Xia Cheng ◽  
Jun Zhou ◽  
Wei Ji ◽  
Yan-Ning Zhang ◽  
Yuan-Ping Feng
Keyword(s):  
Two Dimensional ◽  
Valley Polarization

scholarly journals Magnetic proximity effect in Pt/CoFe2O4 bilayers

2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Walid Amamou ◽  
Igor V. Pinchuk ◽  
Amanda H. Trout ◽  
Robert E. A. Williams ◽  
Nikolas Antolin ◽  
...  
Keyword(s):  
Proximity Effect ◽  
Magnetic Proximity Effect

Magnetic Proximity Effect and Anomalous Hall Effect in Pt/Y3Fe5−xAlxO12 Heterostructures

2018 ◽  
Vol 10 (2) ◽  
Author(s):  
Xiao Liang ◽  
Guoyi Shi ◽  
Longjiang Deng ◽  
Fei Huang ◽  
Jun Qin ◽  
...  
Keyword(s):  
Hall Effect ◽  
Proximity Effect ◽  
Anomalous Hall Effect ◽  
Magnetic Proximity Effect
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