【摘 要】
：
The thickness dependent spin-orbit torque(SOT)in an L10-FePt single layer is investigated in this work.As the thickness increases from 8 nm to 16 nm,the magnetization switching ratio in the L10-FePt film with higher chemical ordering becomes smaller.It is
【机 构】
：
School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100
论文部分内容阅读
The thickness dependent spin-orbit torque(SOT)in an L10-FePt single layer is investigated in this work.As the thickness increases from 8 nm to 16 nm,the magnetization switching ratio in the L10-FePt film with higher chemical ordering becomes smaller.It is noted that compared with 3-nm-thick L10-FePt film,8-nm-thick L10-FePt film can switch much magnetization with the increase of chemical ordering.When the FePt film is thick enough,the SOT in FePt is closely related to the L10-ordered structure,which indicates a bulk nature.Therefore,the disordering plays an important role in the magnetization switching only for the ultra-thin FePt films,while the structural gradient may play an important role for thicker films.However,both of the two mechanisms cannot fully explain the process of magnetization switching and the spin current generation.Although many factors influence SOT,here in this work we emphasize only the bulk nature of strong SOC in L10-FePt through density functional theory calculations,which should generate large spin current due to spin Hall effect.
其他文献
We analyze the behavior of edge states in long-range(LR)interacting systems.In terms of lattice model Hamiltonian with the LR coupling,we determine analytically the condition of existence of edge states within the transfer matrix method(TMM).The expressio
We investigate the polaron and molecular states of a fermionic atom with one-dimensional spin-orbit coupling(SOC)coupled to a three-dimensional spinless Fermi sea.Because of the interplay among the SOC,Raman coupling and spin-selected interatomic interact
We theoretically investigate the wave-vector filtering(WVF)effect for electrons in an antiparallel asymmetric double δ-magnetic-barrier microstructure under a bias,which can be fabricated experimentally by patterning two asymmetric ferromagnetic(FM)stripe
Developing a convenient method that can be routinely applied for ascertaining proportions of different vegetable oils employed in commercial blended edible oils remains a significant challenge.We address this issue by proposing a novel method for detectin
The impact of carbon doping on the background carrier conduction in GaN has been investigated.It is found that the incorporation of carbon can effectively suppress the n-type background carrier concentration as expected.Moreover,from the fitting of the te
We determine the region in which the magnon-mediated spin torques exist.This region can be controlled by the spin waves.In terms of stability analysis of magnetization dynamics based on the spin-wave background,we obtain the instability conditions of spin
Understanding how electrons form pairs in the presence of strong electron correlations demands going beyond the BCS paradigm.We study a correlated superconducting model where the correlation effects are accounted for by a U term local in momentum space.Th
We study the Goos-H?nchen-like shift of single silicene barrier under the external perpendicular electric field,off-resonant circularly polarized light and the exchange field modulation using the stationary-phase method.The results show that the Goos-H?nc
First-principles calculations and Monte Carlo simulations reveal that single-layer and double-layer VX2(X=Cl,Br)can be tuned from antiferromagnetic(AFM)semiconductors to ferromagnetic(FM)state when biaxial tensile stress is applied.Their ground states are
It is known that ion channel can effectively limit the radial expansion of an artificial electron beam during its long-range propagation in the space plasma environment.Most prior studies discussed the focusing characteristics of the beam in the ion chann