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	1. Resistance switching characteristic of Ag/Fe2O3/MoS2/Ag with very low switching voltage
	SHU Haiyan,HE Chaotao,ZHANG Xingwen,LI Shichang,CHEN Peng
	Physics 28 November 2023
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	Abstract:In this paper,the resistive switching characteristics of Ag/Fe2O3/MoS2/Ag multilayer film deposited on ITO by magnetron sputtering are investigated.The Ag/Fe2O3/MoS2/Ag device exhibits superior resistive switching behavior compared to the device without Fe2O3 layer due to the positive effect of oxygen vacancies in Fe2O3 on the formation of conducting filaments. The resistive switching ratio of the device is close to 7.0 × 105. The current value of the device drops sharply at 0.12 V when the voltage is swept forward, and the device switches from HRS back to LRS at -0.28 V when a voltage of opposite polarity is applied.The I-V curves of the device are fitted in double logarithmic coordinates, and it is found that the device is controlled by an ohmic conduction model in the low resistance state and two conduction models in the high resistance state: in the low bias region, which exhibits ohmic conduction, and at higher voltages, which is controlled by the SCLC conduction model. Such a resistive switching characteristic with very low switching voltage and high resistance ratio is of particular importance in the application of resistive stochastic storage.
	TO cite this article:SHU Haiyan,HE Chaotao,ZHANG Xingwen, et al. Resistance switching characteristic of Ag/Fe2O3/MoS2/Ag with very low switching voltage[OL].[28 November 2023] http://en.paper.edu.cn/en_releasepaper/content/4761573


	2. Plasmons in Nitrogen-doped graphene and gold film composite nanostructure
	Shu Xiaoqin
	Physics 24 June 2016
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	Abstract:Using time depended density function theory(TDDFT), the absorption spectra of the Nitrogen-doped graphene and gold film composite nanostructure when the pulse excitation polarized in the X-axis, Y-axis, Z-axis direction, respectively. When the pulse excitation polarized in the X-axis and Y-axis direction the energy points are in the visible region. The induced charge density distribution indicates the charge transform plasmon (CTP)mode. The material is expected to splitting water using visible light.
	TO cite this article:Shu Xiaoqin. Plasmons in Nitrogen-doped graphene and gold film composite nanostructure[OL].[24 June 2016] http://en.paper.edu.cn/en_releasepaper/content/4698508

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	3. Finite size effects on the helical edge states on the Lieb lattice
	CHEN Rui,ZHOU Bin
	Physics 04 January 2016
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	Abstract:In this paper, we investigate the finite sizeeffect of helical edge states on the Lieb lattice with ISO coupling underthree different kinds of boundary conditions, i.e., the straight, beardedand asymmetry edges. The spectrum and wave function of edge modes arederived analytically for a tight-binding model on the Lieb lattice. For a strip Lieb lattice with two straight edges, the ISOcoupling induces the Dirac-like bulk states to localize at the edges tobecome the helical edge states with the same Dirac-like spectrum. Moreover,it is found that in the case with two straight edges the gapless Dirac-likespectrum remains unchanged with decreasing the width of the strip Lieblattice, and no gap is opened in the edge band, that is, finite size effectof QSH states is absent. However, in the other two cases with the beardedand asymmetry edges, the energy gap induced by finite size effect is stillopened with decreasing the width of the strip.
	TO cite this article:CHEN Rui,ZHOU Bin. Finite size effects on the helical edge states on the Lieb lattice[OL].[ 4 January 2016] http://en.paper.edu.cn/en_releasepaper/content/4674109


	4. Modulation of periodic field on the atomic current in optical lattices with Landau-Zener tunneling considered
	YAN Jie-Yun ,WANG Lan-Yu
	Physics 18 December 2015
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	Abstract:We investigate the atomic current in optical lattices under the presence of both constant and periodic external field with Landau-Zener tunneling considered. By simplifying the system to a two-band model, the atomic current is obtained based on the Boltzmann equations. We focus on three situations to discuss the influence of the Landau-Zener tunneling and periodic field on the atomic current. Numerical calculations show the atomic transient current would finally become the stable oscillation, whose amplitude and average value can be further adjusted by the periodic external field. It is concluded that the periodic external field could provide an effective modulation on the atomic current even when the Landau-Zener tunneling probability has no more space to change.
	TO cite this article:YAN Jie-Yun ,WANG Lan-Yu . Modulation of periodic field on the atomic current in optical lattices with Landau-Zener tunneling considered[OL].[18 December 2015] http://en.paper.edu.cn/en_releasepaper/content/4671568


	5. Apodized Grating Coupler Using Fully-etched Nanostructures
	WU Hua,LI Chong,LI Zhiyong,GUO Xia
	Physics 02 December 2015
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	Abstract:A 2-dimensional apodized grating coupler for interfacing between single-mode ?bers and photonic circuits on silicon-on-insulator is demonstrated. The grating coupler with grating grooves are realized by columns of fully etched nanostructures, with the feasibility of digitally tailoring the effective refractive index of each groove in order to obtain the Gaussian-like output diffractive mode in order to enhance the coupling efficiency to the optical fiber. Compared with the uniform grating couplers, the coupling efficiency of the apodized grating couplers increased by 4.3% and 5.7%, respectively, for the nanoholes and nanorectangles as refractive index tuning layer.
	TO cite this article:WU Hua,LI Chong,LI Zhiyong, et al. Apodized Grating Coupler Using Fully-etched Nanostructures[J].


	6. Molecular Design and Performance of Novel Metalloporphyrin Dyes for Efficient Dye-Sensitized Solar Cells
	SUN Qilong,DAI Ying,HUANG Baibiao
	Physics 19 October 2015
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	Abstract:In search of higher photoelectric conversion efficiency, we design a series of novel donor-π-acceptor sensitizers for dye-sensitized solar cells (DSSCs). The proposed zinc porphyrin sensitizers have been theoretically validated to show superior efficiency to YD2-o-C8. The geometries, electronic structure and optical properties of five new proposed metalloporphyrin dye molecules are firstly checked on the basis of density functional theory (DFT) in conjunction with time-dependent density functional theory (TD-DFT) calculations. The geometric structures of the considered dye molecules show varying degrees of deformation. Furthermore, some novel magnetic characteristics are involved in the cases of Fe-dye and Cu-dye. The detailed analysis of the UV/Vis absorption spectra indicates that, compared with the Zn-dye, Cd-dye, Mg-dye and Ni-dye would present improved light absorption properties . In addition, we further demonstrate that the transition metal atoms (Fe and Cu) play an important role in promoting the electron injection as well as the reduction of dye molecules in system of dye/(TiO2)38, which is a model system as a photoanode. These findings contribute to the comprehensive understanding about such type of metalloporphyrin dye molecules and shed insight on the synthesis and application of sensitizers in the near future.
	TO cite this article:SUN Qilong,DAI Ying,HUANG Baibiao. Molecular Design and Performance of Novel Metalloporphyrin Dyes for Efficient Dye-Sensitized Solar Cells[OL].[19 October 2015] http://en.paper.edu.cn/en_releasepaper/content/4656089


	7. Spin-wave propagating spectrum in magnetization-modulated cylindrical nanowire
	LI Zhixiong,Wang Mengning,NIE Yaozhuang,Wang Daowei,Tang Wei,GUO Guanghua
	Physics 30 September 2015
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	Abstract:We investigate the spin-wave propagation in magnetization-modulated cylindrical nanowire by using micromagnetic simulations. Several spin-wave bandgaps are observed on spin-wave propagating spectra and dispersion curves, which are caused by the Bragg reflection of the propagating spin waves at the Brillouin zone boundaries. The bandgaps can be effectively tuned by changing the magnetization modulation level and the periodic length. The manipulation mechanism of the band structure is explained through combined consideration of the periodic effective field and the spin-wave scattering characteristics at the interface of two magnetization segments.
	TO cite this article:LI Zhixiong,Wang Mengning,NIE Yaozhuang, et al. Spin-wave propagating spectrum in magnetization-modulated cylindrical nanowire[OL].[30 September 2015] http://en.paper.edu.cn/en_releasepaper/content/4656499


	8. Dynamic control of spin wave spectra using spin-polarzied currents
	WANG Qi,ZHANG Huaiwu,TANG Xiaoli,Hans Fangohr,BAI Feiming,ZHONG Zhiyong
	Physics 17 September 2014
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	Abstract:We describe a method of controlling the spin wave spectra dynamically in a uniform nanostripe waveguide through spin-polarized currents. A stable periodic magnetization structure is observed when the current flows vertically through the center of nanostripe waveguide. After being excited, the spin wave is transmitted at the sides of the waveguide. Numerical simulations of spin-wave transmission and dispersion curves reveal a single, pronounced band gap. Moreover, the periodic magnetization structure can be turned on and off by the spin-polarized current. The switching process from full rejection to full transmission takes place within less than 3ns. Thus, this type magnonic waveguide can be utilized for low-dissipation spin wave based filters.
	TO cite this article:WANG Qi,ZHANG Huaiwu,TANG Xiaoli, et al. Dynamic control of spin wave spectra using spin-polarzied currents[OL].[17 September 2014] http://en.paper.edu.cn/en_releasepaper/content/4610304


	9. Eight restricted sets of single-qubit operations sharing
	Xing Hang, Xing Pengfei, Xie Chuanmei, Liu Xiansong, Zhang Zhanjun
	Physics 08 January 2014
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	Abstract:In 2011 Zhang and Cheung proposed a tripartite scheme with a GHZ state[{it J. Phys.} B {f 44} (2011) 165508]. It is applicable for sharing two restrictedsets of operations in a deterministic manner. In this paper it is generalized so thatanother six restricted sets of operations can be shared deterministically, too. One the one hand,features about scheme security, sharer symmetry, fulfillment determinacy and experimentalfeasibility are exposed. On the other hand, quantum and classical resource consumption, necessaryoperation complexity and efficiency of the generalized scheme are analyzed.
	TO cite this article:Xing Hang, Xing Pengfei, Xie Chuanmei, et al. Eight restricted sets of single-qubit operations sharing[OL].[ 8 January 2014] http://en.paper.edu.cn/en_releasepaper/content/4581319


	10. Sr0.9K0.1Zn1.8Mn0.2As2: a ferromagnetic semiconductor with colossal magnetoresistence
	YANG Xiaojun,Tao Qian,CAO Guanghan,XU Zhuan
	Physics 28 December 2013
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	Abstract:(Sr,K)(Zn,Mn)2As2 was found to be a bulk diluted magnetic semiconductor system with decoupled charge and spin doping through K+ for Sr2+ and isovalent Mn2+ for Zn2+ substitution. The doped SrZn2As2system has a hexagonal CaAl2Si2-type structure with the Zn2As2layer forming a honeycomb-like network. Magnetization measurements show that the samples undergo ferromagnetic transitions with a Curie temperature of 23 K and saturation moment about 1.5 μB/Mn. Surprisingly, colossal negative magnetoresistance (MR), defined as [ρ(H)?ρ(0)]/ρ(0), up to ?99.8% was also observed in this system. The discovery should bring new excitement to this field and make the recently discovered bulk DMSs truly appealing class of systems. With decoupled charge and spin doping, this system combines semiconductor, ferromagnetism and colossal magnetoresistance (CMR), which make it appealing not only for theoretic study but also for application.
	TO cite this article:YANG Xiaojun,Tao Qian,CAO Guanghan, et al. Sr0.9K0.1Zn1.8Mn0.2As2: a ferromagnetic semiconductor with colossal magnetoresistence[OL].[28 December 2013] http://en.paper.edu.cn/en_releasepaper/content/4577733

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