检索结果-南通市图书馆

Polarization-dependent photoinduced metal–insulator transitions in manganites

Science Bulletin 2024年第2期69卷 183-189页

作者： Lina Deng Weiye Zhang Hanxuan Lin Lifen Xiang Ying Xu Yadi Wang Qiang Li Yinyan Zhu Xiaodong Zhou Wenbin Wang Lifeng Yin Hangwen Guo chuanshan tian Jian Shen State Key Laboratory of Surface Physics Institute for Nanoelectronic Devices and Quantum Computingand Department of PhysicsFudan UniversityShanghai 200433China Shanghai Research Center for Quantum Sciences Shanghai 201315China Zhangjiang Fudan International Innovation Center Fudan UniversityShanghai 201210China Collaborative Innovation Center of Advanced Microstructures Nanjing 210093China Shanghai Branch CAS Center for Excellence and Synergetic Innovation Center in Quantum Information and Quantum PhysicsShanghai 201315China

In correlated oxides,collaborative manipulation on light intensity,wavelength,pulse duration and polarization has yielded many exotic discoveries,such as phase transitions and novel quantum *** view of potential optoelectronic applications,tailoring long-lived static properties by light-induced effects is highly *** far,the polarization state of light has rarely been reported as a control parameter for this ***,we report polarization-dependent metal-to-insulator transition(MIT)in phaseseparated manganite thin films,introducing a new degree of freedom to control static ***,we observed giant photoinduced resistance jumps with striking features:(1)a single resistance jump occurs upon a linearly polarized light incident with a chosen polarization angle,and a second resistance jump occurs when the polarization angle changes;(2)the amplitude of the second resistance jump depends sensitively on the actual change of the polarization *** transmittance measurements reveal that the origin of the above phenomena is closely related to the coexistence of anisotropic *** results represent a first step to utilize light polarization as an active knob to manipulate static phase transitions,pointing towards new pathways for nonvolatile optoelectronic devices and sensors.

关键词： Metal-insulator phase transitions Polarization of light Electronic phase separation Selective domain controllability

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Recent advances on applications of NV-magnetometry in condensed matter physics

引用

Photonics Research 2023年第3期11卷 393-412页

作者： YING XU WEIYE ZHANG chuanshan tian Department of Physics Fudan UniversityShanghai 200438China

Measuring magnetic response from spin and current is of fundamental interest in condensed matter *** charged nitrogen-vacancy(NV^(-))centers in diamond are emerging as a robust and versatile quantum sensor owing to their high sensitivity,nanometer-scale spatial resolution,and noninvasive operation with access to static and dynamic magnetic and electron transport *** this review,we discuss the rapidly growing interest in the implementation of NV^(-)magnetometry to explore condensed matter physics,focusing on three topics:anti/ferromagnetic materials,superconductors,and metals/semimetals/semiconductors.

关键词： properties condensed metals

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Nonrelativistic and nonmagnetic terahertz-wave generation via ultrafast current control in anisotropic conductive heterostructures

引用

Advanced Photonics 2023年第5期5卷 86-95页

作者： Sheng Zhang Yongwei Cui Shunjia Wang Haoran Chen Yaxin Liu Wentao Qin Tongyang Guan chuanshan tian Zhe Yuan Lei Zhou Yizheng Wu Zhensheng Tao Fudan University State Key Laboratory of Surface PhysicsDepartment of PhysicsShanghaiChina Fudan University Key Laboratory of Micro and Nano Photonic StructuresShanghaiChina Shanghai Research Center for Quantum Sciences ShanghaiChina Beijing Normal University Center for Advanced Quantum StudiesDepartment of PhysicsBeijingChina Fudan University Institute for Nanoelectronic Devices and Quantum ComputingShanghaiChina

Precise and ultrafast control over photo-induced charge currents across nanoscale interfaces could lead to important applications in energy harvesting,ultrafast electronics,and coherent terahertz *** studies have shown that several relativistic mechanisms,including inverse spin-Hall effect,inverse Rashba–Edelstein effect,and inverse spin-orbit-torque effect,can convert longitudinally injected spinpolarized currents from magnetic materials to transverse charge currents,thereby harnessing these currents for terahertz ***,these mechanisms typically require external magnetic fields and exhibit limitations in terms of spin-polarization rates and efficiencies of relativistic spin-to-charge *** present a nonrelativistic and nonmagnetic mechanism that directly utilizes the photoexcited high-density charge currents across the *** demonstrate that the electrical anisotropy of conductive oxides RuO2 and IrO2 can effectively deflect injected charge currents to the transverse direction,resulting in efficient and broadband terahertz ***,this mechanism has the potential to offer much higher conversion efficiency compared to previous methods,as conductive materials with large electrical anisotropy are readily available,whereas further increasing the spin-Hall angle of heavy-metal materials would be *** findings offer exciting possibilities for directly utilizing these photoexcited high-density currents across metallic interfaces for ultrafast electronics and terahertz spectroscopy.

关键词： terahertz optics ultrafast science nanophotonics

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A novel scheme for ultrashort terahertz pulse generation over a gapless wide spectral range:Raman-resonance-enhanced four-wave mixing

引用

Light(Science & Applications) 2023年第2期12卷 232-238页

作者： Jiaming Le Yudan Su chuanshan tian A.H.Kung Y.Ron Shen Department of Physics State Key Laboratory of Surface Physics and Key Laboratory of Micro-and Nano-Photonic Structure(MOE)Fudan UniversityShanghai 200433China Department of Physics University of CaliforniaBerkeleyCA 94720USA Collaborative Innovation Center of Advanced Microstructures Nanjing 210093China

Ultrashort energetic terahertz(THz)pulses have created an exciting new area of research on light interactions with *** material studies in small laboratories,widely tunable femtosecond THz pulses with peak field strength close to MV cm-1 are ***,they can be largely acquired by optical rectification and difference frequency generation in crystals without inversion *** describe in this paper a novel scheme of THz pulse generation with no frequency tuning gap based on Raman-resonance-enhanced four-wave mixing in centrosymmetric media,particularly *** show that we could generate highly stable,few-cycle pulses with near-Gaussian spatial and temporal profiles and carrier frequency tunable from 5 to>2o *** had a stable and controllable carrier-envelop phase and carried~15 nJ energy per pulse at 10 THz(with a peak field strength of~1 MV cm^(-1)at focus)from a O.5-mm-thick *** measured THz pulse characteristics agreed well with theoretical *** merits of the scheme are discussed,including the possibility of improving the THz output energy to a much higher level.

关键词： pulse ultrashort tuning

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Surface Tension and Electrostriction in a Suspended Bridge of Dielectric Liquid

引用

Chinese Physics Letters 2018年第10期35卷 63-67页

作者：岑剡田传山 State Key Laboratory of Surface Physics and Department of Physics Fudan University Shanghai 200433 Colla borative Innovation Center of Advanced Microstructures Nanjing 210093

The mechanism of the formation of a surprisingly long suspended liquid bridge subjected to a dc electric field has been intensively studied in the past few decades. However, the role of electrostriction and quantitative evaluation of surface tension in the bridge have not been evaluated. We present combined theoretical and experimental studies on this issue. Electrostriction is pointed out to be the driving force that pushes liquid upward against gravity and into the gap between two containers and forms the suspended bridge, which is within the framework of the Maxwell pressure tensor. Through a comparison between experiment and theory, the surface tension is found to play an important role in holding the long suspended bridge. Ignorance of the surface tension leads to much smaller bridge length than the experimental values. The dynamic stability of the bridge with respect to its diameter, length and conductance is also discussed.

关键词： Surface Tension and Electrostriction in a Suspended Bridge of Dielectric Liquid

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Active spintronic-metasurface terahertz emitters with tunable chirality

引用

Advanced Photonics 2021年第5期3卷 52-61页

作者： Changqin Liu Shunjia Wang Sheng Zhang Qingnan Cai Peng Wang chuanshan tian Lei Zhou Yizheng Wu Zhensheng Tao Fudan University Department of Physics and State Key Laboratory of Surface PhysicsShanghaiChina Shanghai Research Center for Quantum Sciences ShanghaiChina

The ability to generate and manipulate broadband chiral terahertz waves is essential for applications in material imaging,terahertz sensing,and *** can also open up new possibilities for nonlinear terahertz spectroscopy and coherent control of chiral molecules and magnetic *** existing methods,however,often suffer from low efficiency,narrow bandwidth,or poor ***,we propose a novel type of laser-driven terahertz emitters,consisting of metasurface-patterned magnetic multilayer heterostructures,that can overcome the shortcomings of the conventional *** hybrid terahertz emitters combine the advantages of spintronic emitters for being ultrabroadband,efficient,and highly flexible,as well as those of metasurfaces for the powerful control capabilities over the polarization state of emitted terahertz waves on an ultracompact *** a stripe-patterned metasurface as an example,we demonstrate the efficient generation and manipulation of broadband chiral terahertz *** ellipticity can reach>0.75 over a broad terahertz bandwidth(1 to 5 THz),representing a high-quality and efficient source for few-cycle circularly polarized terahertz pulses with stable carrier *** control of ellipticity and helicity is also demonstrated with our systematic experiments and numerical *** show that the terahertz polarization state is dictated by the interplay between laser-induced spintronic-origin currents and the screening charges/currents in the metasurfaces,which exhibits tailored anisotropic properties due to the predesigned geometric confinement *** work opens a new pathway to metasurface-tailored spintronic emitters for efficient vector-control of electromagnetic waves in the terahertz regime.

关键词： chiral terahertz generation active metasurface time-domain terahertz spectroscopy

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Improving the sensitivity of DC magneto-optical Kerr effect measurement to 10^(-7)rad/√Hz

引用

Chinese Optics Letters 2022年第11期20卷 20-25页

作者：马骏颖谷峰徐影乐嘉明曾凡龙吴义政田传山 State Key Laboratory of Surface Physics and Department of Physics Fudan UniversityShanghai 200433China

A high-sensitivity DC magneto-optical Kerr effect(MOKE)apparatus is described in this *** detailed analysis on several dominatingnoise sources,we have proposed solutions that significantly lower the MOKE noise,and a sensitivity of 1.5×10^(-7)rad/√Hz is achieved with long-term *** sensitivity of the apparatus is tested by measuring a wedgeshaped Ni thin film on SiO_(2)with Ni thickness varying from 0 to 3 nm.A noise floor of 1.5×10^(-8)rad is *** possibility of further improving sensitivity to 10^(-9)rad via applying AC modulation is also discussed.

关键词： high sensitivity direct current magneto-optical Kerr effect

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Solitary beam propagation in periodic layered Kerr media enables high-efficiency pulse compression and mode self-cleaning

引用

Light(Science & Applications) 2021年第4期10卷 464-474页

作者： Sheng Zhang Zongyuan Fu Bingbing Zhu Guangyu Fan Yudong Chen Shunjia Wang Yaxin Liu Andrius Baltuska Cheng Jin chuanshan tian Zhensheng Tao State Key Laboratory of Surface Physics and Department of Physics Fudan UniversityShanghaiChina institute of Photonics TU WienGusshausstrasse 27/387ViennaAustria Department of Applied Physics Nanjing University of Science and TechnologyNanjingJiangsu 210094China

Generating intense ultrashort pulses with high-quality spatial modes is crucial for ultrafast and strong-field science and can be achieved by nonlinear supercontinuum generation(SCG)and pulse *** this work,we propose that the generation of quasi-stationary solitons in periodic layered Kerr media can greatly enhance the nonlinear lightmatter interaction and fundamentally improve the performance of SCG and pulse compression in condensed *** both experimental and theoretical studies,we successfully identify these solitary modes and reveal their unified condition for ***-time coupling is shown to strongly influence the stability of solitons,leading to variations in the spectral,spatial and temporal profiles of femtosecond *** advantage of the unique characteristics of these solitary modes,we first demonstrate single-stage SCG and the compression of femtosecond pulses from 170 to 22 fs with an efficiency>85%.The high spatiotemporal quality of the compressed pulses is further confirmed by highharmonic *** also provide evidence of efficient mode self-cleaning,which suggests rich spatiotemporal self-organization of the laser beams in a nonlinear resonator This work offers a route towards highly efficient,simple,stable and highly flexible SCG and pulse compression solutions for state-of-the-art ytterbium laser technology.

关键词： pulse resonator mode

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Unveiling microscopic structure at interface by sum-frequency spectroscopy with higher surface resolution

Unveiling microscopic structure at interface by sum-frequenc...

引用

第十一届全国光学前沿问题讨论会

作者： tian chuanshan Department of Physics State Key Laboratory of Surface PhysicsKey Laboratory of Microand Nano-Photonic Structures（MOE）Fudan University

＜正＞Sum frequency spectroscopy（SFS）has been developed into a versatile analytical tool for surface studies because it is highly surface-specific dictated by symmetry under electric dipole ***,there still exist cha...

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

“超快光学”专辑导读

引用

光子学报 2021年第8期50卷 1-2页

作者：刘运全田传山北京大学物理学院复旦大学物理学系

20世纪90年代以来,超快激光技术的不断发展与成熟,特别是得益于啁啾脉冲放大技术,使得超快光学与光谱学研究进入了全新的发展阶段。随着激光强度的增加、脉宽的缩短,超快光学研究从传统的微扰区进入到非微扰区乃至相对论区域,研究对象... 详细信息

20世纪90年代以来,超快激光技术的不断发展与成熟,特别是得益于啁啾脉冲放大技术,使得超快光学与光谱学研究进入了全新的发展阶段。随着激光强度的增加、脉宽的缩短,超快光学研究从传统的微扰区进入到非微扰区乃至相对论区域,研究对象从宏观物质体系推进到介观乃至微观物质体系。结合非线性光学效应和极端条件光与物质相互作用,超快光学为人们提供了从太赫兹到X射线波段的新型光源。这些新波段相干光源的出现催生了太赫兹非线性光学、X射线非线性光学等研究方向,拓展了超快光学的研究领域、研究对象和应用范围,为物质科学研究持续提供全新的探测手段。

关键词：超快激光技术非线性光学太赫兹超快光学激光强度新型光源相干光源极端条件

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：