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- [21] Spintronic THz emitters based on transition metals and semi-metals/Pt multilayers2023 48TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES, IRMMW-THZ, 2023,Massabeau, S.论文数: 0 引用数: 0 h-index: 0机构: Univ Paris Saclay, CNRS, Unite Mixte Phys, F-91767 Palaiseau, France Univ Paris Saclay, CNRS, Unite Mixte Phys, F-91767 Palaiseau, FranceHawecker, J.论文数: 0 引用数: 0 h-index: 0机构: Univ Paris, Univ PSL, Sorbonne Univ, CNRS,Lab Phys,ENS, F-75005 Paris, France Univ Paris Saclay, CNRS, Unite Mixte Phys, F-91767 Palaiseau, France论文数: 引用数: h-index:机构:Markou, A.论文数: 0 引用数: 0 h-index: 0机构: Max Planck Inst Chem Phys Solids, D-01187 Dresden, Germany Univ Paris Saclay, CNRS, Unite Mixte Phys, F-91767 Palaiseau, France论文数: 引用数: h-index:机构:Godel, F.论文数: 0 引用数: 0 h-index: 0机构: Univ Paris Saclay, CNRS, Unite Mixte Phys, F-91767 Palaiseau, France Univ Paris Saclay, CNRS, Unite Mixte Phys, F-91767 Palaiseau, France论文数: 引用数: h-index:机构:Lebrun, R.论文数: 0 引用数: 0 h-index: 0机构: Univ Paris Saclay, CNRS, Unite Mixte Phys, F-91767 Palaiseau, France Univ Paris Saclay, CNRS, Unite Mixte Phys, F-91767 Palaiseau, FranceTignon, J.论文数: 0 引用数: 0 h-index: 0机构: Univ Paris, Univ PSL, Sorbonne Univ, CNRS,Lab Phys,ENS, F-75005 Paris, France Univ Paris Saclay, CNRS, Unite Mixte Phys, F-91767 Palaiseau, France论文数: 引用数: h-index:机构:Boulier, T.论文数: 0 引用数: 0 h-index: 0机构: Univ Paris, Univ PSL, Sorbonne Univ, CNRS,Lab Phys,ENS, F-75005 Paris, France Univ Paris Saclay, CNRS, Unite Mixte Phys, F-91767 Palaiseau, FranceGeorge, J. -M.论文数: 0 引用数: 0 h-index: 0机构: Univ Paris Saclay, CNRS, Unite Mixte Phys, F-91767 Palaiseau, France Univ Paris Saclay, CNRS, Unite Mixte Phys, F-91767 Palaiseau, FranceFelser, C.论文数: 0 引用数: 0 h-index: 0机构: Max Planck Inst Chem Phys Solids, D-01187 Dresden, Germany Univ Paris Saclay, CNRS, Unite Mixte Phys, F-91767 Palaiseau, FranceJaffres, H.论文数: 0 引用数: 0 h-index: 0机构: Univ Paris Saclay, CNRS, Unite Mixte Phys, F-91767 Palaiseau, France Univ Paris Saclay, CNRS, Unite Mixte Phys, F-91767 Palaiseau, FranceDhillon, S.论文数: 0 引用数: 0 h-index: 0机构: Univ Paris, Univ PSL, Sorbonne Univ, CNRS,Lab Phys,ENS, F-75005 Paris, France Univ Paris Saclay, CNRS, Unite Mixte Phys, F-91767 Palaiseau, France
- [22] Principles of spintronic THz emittersJOURNAL OF APPLIED PHYSICS, 2021, 130 (09)Wu, Weipeng论文数: 0 引用数: 0 h-index: 0机构: Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USAYaw Ameyaw, Charles论文数: 0 引用数: 0 h-index: 0机构: Univ Delaware, Dept Mat Sci & Engn, Newark, DE 19716 USA Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USADoty, Matthew F.论文数: 0 引用数: 0 h-index: 0机构: Univ Delaware, Dept Mat Sci & Engn, Newark, DE 19716 USA Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USAJungfleisch, M. Benjamin论文数: 0 引用数: 0 h-index: 0机构: Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA
- [23] Spintronic THz emitters based on transition metals and semi-metals/Pt multilayersAPPLIED PHYSICS LETTERS, 2022, 120 (12)Hawecker, J.论文数: 0 引用数: 0 h-index: 0机构: Univ Paris, Sorbonne Univ, CNRS, Univ PSL,Lab Phys,Ecole Normale Super,ENS, F-75005 Paris, France Univ Paris, Sorbonne Univ, CNRS, Univ PSL,Lab Phys,Ecole Normale Super,ENS, F-75005 Paris, France论文数: 引用数: h-index:机构:Markou, A.论文数: 0 引用数: 0 h-index: 0机构: Max Planck Inst Chem Phys Solids, D-01187 Dresden, Germany Univ Paris, Sorbonne Univ, CNRS, Univ PSL,Lab Phys,Ecole Normale Super,ENS, F-75005 Paris, France论文数: 引用数: h-index:机构:Godel, F.论文数: 0 引用数: 0 h-index: 0机构: Univ Paris Saclay, Thales, CNRS, Unite Mixte Phys, F-91767 Palaiseau, France Univ Paris, Sorbonne Univ, CNRS, Univ PSL,Lab Phys,Ecole Normale Super,ENS, F-75005 Paris, France论文数: 引用数: h-index:机构:Lebrun, R.论文数: 0 引用数: 0 h-index: 0机构: Univ Paris Saclay, Thales, CNRS, Unite Mixte Phys, F-91767 Palaiseau, France Univ Paris, Sorbonne Univ, CNRS, Univ PSL,Lab Phys,Ecole Normale Super,ENS, F-75005 Paris, FranceTignon, J.论文数: 0 引用数: 0 h-index: 0机构: Univ Paris, Sorbonne Univ, CNRS, Univ PSL,Lab Phys,Ecole Normale Super,ENS, F-75005 Paris, France Univ Paris, Sorbonne Univ, CNRS, Univ PSL,Lab Phys,Ecole Normale Super,ENS, F-75005 Paris, France论文数: 引用数: h-index:机构:Boulier, T.论文数: 0 引用数: 0 h-index: 0机构: Univ Paris, Sorbonne Univ, CNRS, Univ PSL,Lab Phys,Ecole Normale Super,ENS, F-75005 Paris, France Univ Paris, Sorbonne Univ, CNRS, Univ PSL,Lab Phys,Ecole Normale Super,ENS, F-75005 Paris, FranceGeorge, J-M论文数: 0 引用数: 0 h-index: 0机构: Univ Paris Saclay, Thales, CNRS, Unite Mixte Phys, F-91767 Palaiseau, France Univ Paris, Sorbonne Univ, CNRS, Univ PSL,Lab Phys,Ecole Normale Super,ENS, F-75005 Paris, FranceFelser, C.论文数: 0 引用数: 0 h-index: 0机构: Max Planck Inst Chem Phys Solids, D-01187 Dresden, Germany Univ Paris, Sorbonne Univ, CNRS, Univ PSL,Lab Phys,Ecole Normale Super,ENS, F-75005 Paris, FranceJaffres, H.论文数: 0 引用数: 0 h-index: 0机构: Univ Paris Saclay, Thales, CNRS, Unite Mixte Phys, F-91767 Palaiseau, France Univ Paris, Sorbonne Univ, CNRS, Univ PSL,Lab Phys,Ecole Normale Super,ENS, F-75005 Paris, FranceDhillon, S.论文数: 0 引用数: 0 h-index: 0机构: Univ Paris, Sorbonne Univ, CNRS, Univ PSL,Lab Phys,Ecole Normale Super,ENS, F-75005 Paris, France Univ Paris, Sorbonne Univ, CNRS, Univ PSL,Lab Phys,Ecole Normale Super,ENS, F-75005 Paris, France
- [24] Composition-dependent ultrafast THz emission of spintronic CoFe/Pt thin filmsAPPLIED PHYSICS LETTERS, 2022, 120 (04)Schneider, Robert论文数: 0 引用数: 0 h-index: 0机构: Univ Munster, Inst Phys, Wilhelm Klemm Str 10, D-48149 Munster, Germany Univ Munster, Ctr Nanotechnol, Wilhelm Klemm Str 10, D-48149 Munster, Germany Univ Munster, Inst Phys, Wilhelm Klemm Str 10, D-48149 Munster, Germany论文数: 引用数: h-index:机构:Bensmann, Jannis论文数: 0 引用数: 0 h-index: 0机构: Univ Munster, Inst Phys, Wilhelm Klemm Str 10, D-48149 Munster, Germany Univ Munster, Ctr Nanotechnol, Wilhelm Klemm Str 10, D-48149 Munster, Germany Univ Munster, Inst Phys, Wilhelm Klemm Str 10, D-48149 Munster, GermanyMichaelis de Vasconcellos, Steffen论文数: 0 引用数: 0 h-index: 0机构: Univ Munster, Inst Phys, Wilhelm Klemm Str 10, D-48149 Munster, Germany Univ Munster, Ctr Nanotechnol, Wilhelm Klemm Str 10, D-48149 Munster, Germany Univ Munster, Inst Phys, Wilhelm Klemm Str 10, D-48149 Munster, GermanyAlbrecht, Manfred论文数: 0 引用数: 0 h-index: 0机构: Univ Augsburg, Inst Phys, Univ Str 1, D-86159 Augsburg, Germany Univ Munster, Inst Phys, Wilhelm Klemm Str 10, D-48149 Munster, GermanyBratschitsch, Rudolf论文数: 0 引用数: 0 h-index: 0机构: Univ Munster, Inst Phys, Wilhelm Klemm Str 10, D-48149 Munster, Germany Univ Munster, Ctr Nanotechnol, Wilhelm Klemm Str 10, D-48149 Munster, Germany Univ Munster, Inst Phys, Wilhelm Klemm Str 10, D-48149 Munster, Germany
- [25] Spintronic Terahertz Emitter on a Fiber Tip2023 48TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES, IRMMW-THZ, 2023,论文数: 引用数: h-index:机构:Tiercelin, Nicolas论文数: 0 引用数: 0 h-index: 0机构: Univ Lille, Univ Polytech Hauts de France, CNRS, Centrale Lille, F-59000 Lille, France Fraunhofer Inst Ind Math ITWM, Dept Mat Characterizat & Testing, D-67663 Kaiserslautern, Germany论文数: 引用数: h-index:机构:论文数: 引用数: h-index:机构:Selz, Felix论文数: 0 引用数: 0 h-index: 0机构: Fraunhofer Inst Ind Math ITWM, Dept Mat Characterizat & Testing, D-67663 Kaiserslautern, Germany RPTU Kaiserslautern Landau, Dept Phys, D-67663 Kaiserslautern, Germany RPTU Kaiserslautern Landau, Res Ctr OPTIMAS, D-67663 Kaiserslautern, Germany Fraunhofer Inst Ind Math ITWM, Dept Mat Characterizat & Testing, D-67663 Kaiserslautern, GermanySyskaki, Maria-Andromachi论文数: 0 引用数: 0 h-index: 0机构: Singulus Technol AG, Hanauer Landstr 107, D-63796 Kahl Am Main, Germany Fraunhofer Inst Ind Math ITWM, Dept Mat Characterizat & Testing, D-67663 Kaiserslautern, Germany论文数: 引用数: h-index:机构:Jakob, Gerhard论文数: 0 引用数: 0 h-index: 0机构: Johannes Gutenberg Univ Mainz, Inst Phys, D-55128 Mainz, Germany Fraunhofer Inst Ind Math ITWM, Dept Mat Characterizat & Testing, D-67663 Kaiserslautern, GermanyJourdan, Martin论文数: 0 引用数: 0 h-index: 0机构: Johannes Gutenberg Univ Mainz, Inst Phys, D-55128 Mainz, Germany Fraunhofer Inst Ind Math ITWM, Dept Mat Characterizat & Testing, D-67663 Kaiserslautern, GermanyKlaeni, Mathias论文数: 0 引用数: 0 h-index: 0机构: Johannes Gutenberg Univ Mainz, Inst Phys, D-55128 Mainz, Germany Fraunhofer Inst Ind Math ITWM, Dept Mat Characterizat & Testing, D-67663 Kaiserslautern, GermanyKaspar, Zdenek论文数: 0 引用数: 0 h-index: 0机构: Free Univ Berlin, Dept Phys, D-1495 Berlin, Germany Fraunhofer Inst Ind Math ITWM, Dept Mat Characterizat & Testing, D-67663 Kaiserslautern, GermanyKampfrath, Tobias论文数: 0 引用数: 0 h-index: 0机构: Free Univ Berlin, Dept Phys, D-1495 Berlin, Germany Fraunhofer Inst Ind Math ITWM, Dept Mat Characterizat & Testing, D-67663 Kaiserslautern, GermanySeifert, Tom S.论文数: 0 引用数: 0 h-index: 0机构: Free Univ Berlin, Dept Phys, D-1495 Berlin, Germany TeraSpinTec GmbH, D-10557 Berlin, Germany Fraunhofer Inst Ind Math ITWM, Dept Mat Characterizat & Testing, D-67663 Kaiserslautern, Germanyvon Freymann, Georg论文数: 0 引用数: 0 h-index: 0机构: Fraunhofer Inst Ind Math ITWM, Dept Mat Characterizat & Testing, D-67663 Kaiserslautern, Germany RPTU Kaiserslautern Landau, Dept Phys, D-67663 Kaiserslautern, Germany RPTU Kaiserslautern Landau, Res Ctr OPTIMAS, D-67663 Kaiserslautern, Germany Fraunhofer Inst Ind Math ITWM, Dept Mat Characterizat & Testing, D-67663 Kaiserslautern, Germany论文数: 引用数: h-index:机构:
- [26] Electronic-Spintronic Terahertz EmitterPHYSICAL REVIEW APPLIED, 2019, 11 (02)Yu, Chengpeng论文数: 0 引用数: 0 h-index: 0机构: Univ Elect Sci & Technol China, Terahertz Sci & Technol Res Ctr, Chengdu 610054, Sichuan, Peoples R China Univ Elect Sci & Technol China, Cooperat Innovat Ctr Terahertz Sci, Chengdu 610054, Sichuan, Peoples R China Univ Elect Sci & Technol China, Terahertz Sci & Technol Res Ctr, Chengdu 610054, Sichuan, Peoples R ChinaLiu, Shenggang论文数: 0 引用数: 0 h-index: 0机构: Univ Elect Sci & Technol China, Terahertz Sci & Technol Res Ctr, Chengdu 610054, Sichuan, Peoples R China Univ Elect Sci & Technol China, Cooperat Innovat Ctr Terahertz Sci, Chengdu 610054, Sichuan, Peoples R China Univ Elect Sci & Technol China, Terahertz Sci & Technol Res Ctr, Chengdu 610054, Sichuan, Peoples R China
- [27] Spintronic THz Generation Using a Silicon-based Fe/Pt Bilayer as the Radiation Source2019 44TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ), 2019,Mag-usara, Valynn Katrine论文数: 0 引用数: 0 h-index: 0机构: Univ Fukui, Res Ctr Dev Far Infrared Reg, Fukui 9108507, Japan Univ Fukui, Res Ctr Dev Far Infrared Reg, Fukui 9108507, JapanTorosyan, Garik论文数: 0 引用数: 0 h-index: 0机构: Photon Ctr Kaiserslautern, D-67663 Kaiserslautern, Germany Univ Fukui, Res Ctr Dev Far Infrared Reg, Fukui 9108507, JapanTalara, Miezel论文数: 0 引用数: 0 h-index: 0机构: Univ Fukui, Res Ctr Dev Far Infrared Reg, Fukui 9108507, Japan Univ Fukui, Res Ctr Dev Far Infrared Reg, Fukui 9108507, JapanAfalla, Jessica论文数: 0 引用数: 0 h-index: 0机构: Univ Fukui, Res Ctr Dev Far Infrared Reg, Fukui 9108507, Japan Univ Fukui, Res Ctr Dev Far Infrared Reg, Fukui 9108507, Japan论文数: 引用数: h-index:机构:Kitahara, Hideaki论文数: 0 引用数: 0 h-index: 0机构: Osaka Univ, Inst Laser Engn, Osaka 5650871, Japan Univ Fukui, Res Ctr Dev Far Infrared Reg, Fukui 9108507, JapanScheuer, Laura论文数: 0 引用数: 0 h-index: 0机构: Tech Univ Kaiserslautern, Res Ctr OPTIMAS, Dept Phys, D-67663 Kaiserslautern, Germany Univ Fukui, Res Ctr Dev Far Infrared Reg, Fukui 9108507, Japan论文数: 引用数: h-index:机构:Papaioannou, Evangelos Th论文数: 0 引用数: 0 h-index: 0机构: Tech Univ Kaiserslautern, Res Ctr OPTIMAS, Dept Phys, D-67663 Kaiserslautern, Germany Univ Fukui, Res Ctr Dev Far Infrared Reg, Fukui 9108507, JapanRahm, Marco论文数: 0 引用数: 0 h-index: 0机构: Tech Univ Kaiserslautern, Res Ctr OPTIMAS, Dept Elect & Comp Engn, D-67663 Kaiserslautern, Germany Univ Fukui, Res Ctr Dev Far Infrared Reg, Fukui 9108507, JapanBeigang, Rene论文数: 0 引用数: 0 h-index: 0机构: Tech Univ Kaiserslautern, Res Ctr OPTIMAS, Dept Phys, D-67663 Kaiserslautern, Germany Univ Fukui, Res Ctr Dev Far Infrared Reg, Fukui 9108507, JapanTani, Masahiko论文数: 0 引用数: 0 h-index: 0机构: Univ Fukui, Res Ctr Dev Far Infrared Reg, Fukui 9108507, Japan Univ Fukui, Res Ctr Dev Far Infrared Reg, Fukui 9108507, Japan
- [28] Temperature-dependent THz transients emitted by optically excited FeNi/Pt spintronic emitters2023 48TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES, IRMMW-THZ, 2023,Cheng, Jing论文数: 0 引用数: 0 h-index: 0机构: Univ Rochester, Mat Sci Program, 601 Elmwood Ave, Rochester, NY 14627 USA Univ Rochester, Laser Energet Lab, 250 E River Rd, Rochester, NY 14623 USA Univ Rochester, Mat Sci Program, 601 Elmwood Ave, Rochester, NY 14627 USABuergler, Daniel E.论文数: 0 引用数: 0 h-index: 0机构: Res Ctr Julich, Peter Grunberg Inst, D-52425 Julich, Germany Univ Rochester, Mat Sci Program, 601 Elmwood Ave, Rochester, NY 14627 USAAdam, Roman论文数: 0 引用数: 0 h-index: 0机构: Res Ctr Julich, Peter Grunberg Inst, D-52425 Julich, Germany Univ Rochester, Mat Sci Program, 601 Elmwood Ave, Rochester, NY 14627 USAKomissarov, Ivan论文数: 0 引用数: 0 h-index: 0机构: Univ Rochester, Laser Energet Lab, 250 E River Rd, Rochester, NY 14623 USA Univ Rochester, Dept Elect & Comp Engn, 601 Elmwood Ave, Rochester, NY 14627 USA Univ Rochester, Mat Sci Program, 601 Elmwood Ave, Rochester, NY 14627 USAChaktraborty, Debamitra论文数: 0 引用数: 0 h-index: 0机构: Univ Rochester, Mat Sci Program, 601 Elmwood Ave, Rochester, NY 14627 USA Univ Rochester, Laser Energet Lab, 250 E River Rd, Rochester, NY 14623 USA Univ Rochester, Mat Sci Program, 601 Elmwood Ave, Rochester, NY 14627 USAChen, Genyu论文数: 0 引用数: 0 h-index: 0机构: Univ Rochester, Mat Sci Program, 601 Elmwood Ave, Rochester, NY 14627 USA Univ Rochester, Mat Sci Program, 601 Elmwood Ave, Rochester, NY 14627 USA论文数: 引用数: h-index:机构:
- [29] Reconfigurable Chiral Spintronic THz EmittersADVANCED OPTICAL MATERIALS, 2024, 12 (20):Agarwal, Piyush论文数: 0 引用数: 0 h-index: 0机构: Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, 21 Nanyang Link, Singapore 637371, Singapore Nanyang Technol Univ, Photon Inst, Ctr Disrupt Photon Technol, Singapore 639798, Singapore Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, 21 Nanyang Link, Singapore 637371, SingaporeMishra, Sobhan Subhra论文数: 0 引用数: 0 h-index: 0机构: Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, 21 Nanyang Link, Singapore 637371, Singapore Nanyang Technol Univ, Photon Inst, Ctr Disrupt Photon Technol, Singapore 639798, Singapore Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, 21 Nanyang Link, Singapore 637371, SingaporeMedwal, Rohit论文数: 0 引用数: 0 h-index: 0机构: Indian Inst Technol Kanpur, Dept Phys, Kanpur 208016, Uttar Pradesh, India Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, 21 Nanyang Link, Singapore 637371, SingaporeMohan, John Rex论文数: 0 引用数: 0 h-index: 0机构: Kyushu Inst Technol, Fac Comp Sci & Syst Engn, Dept Phys & Informat Technol, Iizuka 8208502, Japan Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, 21 Nanyang Link, Singapore 637371, SingaporeAsada, Hironori论文数: 0 引用数: 0 h-index: 0机构: Yamaguchi Univ, Grad Sch Sci & Engn, Dept Elect Devices & Engn, Ube, Japan Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, 21 Nanyang Link, Singapore 637371, Singapore论文数: 引用数: h-index:机构:Singh, Ranjan论文数: 0 引用数: 0 h-index: 0机构: Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, 21 Nanyang Link, Singapore 637371, Singapore Nanyang Technol Univ, Photon Inst, Ctr Disrupt Photon Technol, Singapore 639798, Singapore Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, 21 Nanyang Link, Singapore 637371, Singapore
- [30] Switchable ultrafast spintronic THz emitters2021 46TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER AND TERAHERTZ WAVES (IRMMW-THZ), 2021,Schneider, Robert论文数: 0 引用数: 0 h-index: 0机构: Univ Munster, Inst Phys, D-48149 Munster, Germany Univ Munster, Ctr Nanotechnol, D-48149 Munster, Germany Univ Munster, Inst Phys, D-48149 Munster, Germany论文数: 引用数: h-index:机构:Bensmann, Jannis论文数: 0 引用数: 0 h-index: 0机构: Univ Munster, Inst Phys, D-48149 Munster, Germany Univ Munster, Ctr Nanotechnol, D-48149 Munster, Germany Univ Munster, Inst Phys, D-48149 Munster, Germanyde Vasconcellos, Steffen Michaelis论文数: 0 引用数: 0 h-index: 0机构: Univ Munster, Inst Phys, D-48149 Munster, Germany Univ Munster, Ctr Nanotechnol, D-48149 Munster, Germany Univ Munster, Inst Phys, D-48149 Munster, GermanyAlbrecht, Manfred论文数: 0 引用数: 0 h-index: 0机构: Univ Augsburg, Inst Phys, D-86159 Augsburg, Germany Univ Munster, Inst Phys, D-48149 Munster, GermanyBratschitsch, Rudolf论文数: 0 引用数: 0 h-index: 0机构: Univ Munster, Inst Phys, D-48149 Munster, Germany Univ Munster, Ctr Nanotechnol, D-48149 Munster, Germany Univ Munster, Inst Phys, D-48149 Munster, Germany