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- [41] Phase Change Materials for Multi-level Storage Phase Change Memory2012 INTERNATIONAL WORKSHOP ON INFORMATION STORAGE AND NINTH INTERNATIONAL SYMPOSIUM ON OPTICAL STORAGE, 2013, 8782Ren, Kun论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai Inst Microsyst & Informat Technol, Shanghai 200050, Peoples R China Chinese Acad Sci, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai Inst Microsyst & Informat Technol, Shanghai 200050, Peoples R ChinaRao, Feng论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai Inst Microsyst & Informat Technol, Shanghai 200050, Peoples R China Chinese Acad Sci, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai Inst Microsyst & Informat Technol, Shanghai 200050, Peoples R ChinaSong, Zhitang论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai Inst Microsyst & Informat Technol, Shanghai 200050, Peoples R China Chinese Acad Sci, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai Inst Microsyst & Informat Technol, Shanghai 200050, Peoples R ChinaZhu, Min论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai Inst Microsyst & Informat Technol, Shanghai 200050, Peoples R China Chinese Acad Sci, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai Inst Microsyst & Informat Technol, Shanghai 200050, Peoples R ChinaGong, Yuefeng论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai Inst Microsyst & Informat Technol, Shanghai 200050, Peoples R China Chinese Acad Sci, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai Inst Microsyst & Informat Technol, Shanghai 200050, Peoples R ChinaWu, Liangcai论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai Inst Microsyst & Informat Technol, Shanghai 200050, Peoples R China Chinese Acad Sci, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai Inst Microsyst & Informat Technol, Shanghai 200050, Peoples R ChinaLiu, Bo论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai Inst Microsyst & Informat Technol, Shanghai 200050, Peoples R China Chinese Acad Sci, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai Inst Microsyst & Informat Technol, Shanghai 200050, Peoples R ChinaFeng, Songlin论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai Inst Microsyst & Informat Technol, Shanghai 200050, Peoples R China Chinese Acad Sci, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai Inst Microsyst & Informat Technol, Shanghai 200050, Peoples R China
- [42] Phase Change Memory Line Concept for Embedded Memory Applications2010 INTERNATIONAL ELECTRON DEVICES MEETING - TECHNICAL DIGEST, 2010,Attenborough, K.论文数: 0 引用数: 0 h-index: 0机构: NXP TSMC Res Ctr, Kapeldreef 75, B-3001 Louvain, Belgium NXP TSMC Res Ctr, Kapeldreef 75, B-3001 Louvain, BelgiumHurkx, G. A. M.论文数: 0 引用数: 0 h-index: 0机构: NXP TSMC Res Ctr, Kapeldreef 75, B-3001 Louvain, Belgium NXP TSMC Res Ctr, Kapeldreef 75, B-3001 Louvain, BelgiumDelhougne, R.论文数: 0 引用数: 0 h-index: 0机构: NXP TSMC Res Ctr, Kapeldreef 75, B-3001 Louvain, Belgium NXP TSMC Res Ctr, Kapeldreef 75, B-3001 Louvain, BelgiumPerez, J.论文数: 0 引用数: 0 h-index: 0机构: NXP TSMC Res Ctr, Kapeldreef 75, B-3001 Louvain, Belgium NXP TSMC Res Ctr, Kapeldreef 75, B-3001 Louvain, BelgiumWang, M. T.论文数: 0 引用数: 0 h-index: 0机构: TSMC, Tainan, Taiwan NXP TSMC Res Ctr, Kapeldreef 75, B-3001 Louvain, BelgiumOng, T. C.论文数: 0 引用数: 0 h-index: 0机构: TSMC, Tainan, Taiwan NXP TSMC Res Ctr, Kapeldreef 75, B-3001 Louvain, BelgiumTran, Luan论文数: 0 引用数: 0 h-index: 0机构: TSMC, Tainan, Taiwan NXP TSMC Res Ctr, Kapeldreef 75, B-3001 Louvain, BelgiumRoy, D.论文数: 0 引用数: 0 h-index: 0机构: NXP TSMC Res Ctr, Eindhoven, Netherlands NXP TSMC Res Ctr, Kapeldreef 75, B-3001 Louvain, BelgiumGravesteijn, D. J.论文数: 0 引用数: 0 h-index: 0机构: NXP TSMC Res Ctr, Kapeldreef 75, B-3001 Louvain, Belgium NXP TSMC Res Ctr, Kapeldreef 75, B-3001 Louvain, Belgiumvan Duuren, M. J.论文数: 0 引用数: 0 h-index: 0机构: NXP TSMC Res Ctr, Kapeldreef 75, B-3001 Louvain, Belgium NXP TSMC Res Ctr, Kapeldreef 75, B-3001 Louvain, Belgium
- [43] Write-Once-Memory-Code Phase Change Memory2014 DESIGN, AUTOMATION AND TEST IN EUROPE CONFERENCE AND EXHIBITION (DATE), 2014,Li, Jiayin论文数: 0 引用数: 0 h-index: 0机构: Univ Pittsburgh, Dept Elect & Comp Engn, Pittsburgh, PA 15260 USA Univ Pittsburgh, Dept Elect & Comp Engn, Pittsburgh, PA 15260 USAMohanram, Kartik论文数: 0 引用数: 0 h-index: 0机构: Univ Pittsburgh, Dept Elect & Comp Engn, Pittsburgh, PA 15260 USA Univ Pittsburgh, Dept Elect & Comp Engn, Pittsburgh, PA 15260 USA
- [44] Cell design considerations for phase change memory as a universal memory2008 INTERNATIONAL SYMPOSIUM ON VLSI TECHNOLOGY, SYSTEMS AND APPLICATIONS (VLSI-TSA), PROCEEDINGS OF TECHNICAL PROGRAM, 2008, : 132 - 133Lam, Chung论文数: 0 引用数: 0 h-index: 0
- [45] Phase Change Memory: A new memory enables new memory usage models2009 IEEE INTERNATIONAL MEMORY WORKSHOP, 2009, : 72 - 73Eilert, Sean论文数: 0 引用数: 0 h-index: 0机构: Numonyx Inc, Folsom, CA USA Numonyx Inc, Folsom, CA USALeinwander, Mark论文数: 0 引用数: 0 h-index: 0机构: Numonyx Inc, Folsom, CA USA Numonyx Inc, Folsom, CA USACrisenza, Giuseppe论文数: 0 引用数: 0 h-index: 0机构: Numonyx Inc, Folsom, CA USA Numonyx Inc, Folsom, CA USA
- [46] Programming characteristics of phase change random access memory using phase change simulationsJAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 2005, 44 (4B): : 2701 - 2705Kim, YT论文数: 0 引用数: 0 h-index: 0机构: Samsung Elect, Semicond R&D Ctr, CAE Team, Yongin 449711, South Korea Samsung Elect, Semicond R&D Ctr, CAE Team, Yongin 449711, South KoreaHwang, YN论文数: 0 引用数: 0 h-index: 0机构: Samsung Elect, Semicond R&D Ctr, CAE Team, Yongin 449711, South KoreaLee, KH论文数: 0 引用数: 0 h-index: 0机构: Samsung Elect, Semicond R&D Ctr, CAE Team, Yongin 449711, South KoreaLee, SH论文数: 0 引用数: 0 h-index: 0机构: Samsung Elect, Semicond R&D Ctr, CAE Team, Yongin 449711, South KoreaJeong, CW论文数: 0 引用数: 0 h-index: 0机构: Samsung Elect, Semicond R&D Ctr, CAE Team, Yongin 449711, South KoreaAhn, SJ论文数: 0 引用数: 0 h-index: 0机构: Samsung Elect, Semicond R&D Ctr, CAE Team, Yongin 449711, South KoreaYeung, F论文数: 0 引用数: 0 h-index: 0机构: Samsung Elect, Semicond R&D Ctr, CAE Team, Yongin 449711, South KoreaKoh, GH论文数: 0 引用数: 0 h-index: 0机构: Samsung Elect, Semicond R&D Ctr, CAE Team, Yongin 449711, South KoreaJeong, HS论文数: 0 引用数: 0 h-index: 0机构: Samsung Elect, Semicond R&D Ctr, CAE Team, Yongin 449711, South KoreaChung, WY论文数: 0 引用数: 0 h-index: 0机构: Samsung Elect, Semicond R&D Ctr, CAE Team, Yongin 449711, South KoreaKim, TK论文数: 0 引用数: 0 h-index: 0机构: Samsung Elect, Semicond R&D Ctr, CAE Team, Yongin 449711, South KoreaPark, YK论文数: 0 引用数: 0 h-index: 0机构: Samsung Elect, Semicond R&D Ctr, CAE Team, Yongin 449711, South KoreaKim, KN论文数: 0 引用数: 0 h-index: 0机构: Samsung Elect, Semicond R&D Ctr, CAE Team, Yongin 449711, South KoreaKong, JT论文数: 0 引用数: 0 h-index: 0机构: Samsung Elect, Semicond R&D Ctr, CAE Team, Yongin 449711, South Korea
- [47] Transient phase change effect during the crystallization process in phase change memory devicesAPPLIED PHYSICS LETTERS, 2009, 94 (24)Yeo, E. G.论文数: 0 引用数: 0 h-index: 0机构: Agcy Sci Technol & Res, Data Storage Inst, Singapore 117608, Singapore Univ Illinois, Dept Elect & Comp Engn, Everitt Lab, Urbana, IL 61801 USA Agcy Sci Technol & Res, Data Storage Inst, Singapore 117608, SingaporeZhao, R.论文数: 0 引用数: 0 h-index: 0机构: Agcy Sci Technol & Res, Data Storage Inst, Singapore 117608, Singapore Agcy Sci Technol & Res, Data Storage Inst, Singapore 117608, SingaporeShi, L. P.论文数: 0 引用数: 0 h-index: 0机构: Agcy Sci Technol & Res, Data Storage Inst, Singapore 117608, Singapore Agcy Sci Technol & Res, Data Storage Inst, Singapore 117608, SingaporeLim, K. G.论文数: 0 引用数: 0 h-index: 0机构: Agcy Sci Technol & Res, Data Storage Inst, Singapore 117608, Singapore Agcy Sci Technol & Res, Data Storage Inst, Singapore 117608, SingaporeChong, T. C.论文数: 0 引用数: 0 h-index: 0机构: Agcy Sci Technol & Res, Data Storage Inst, Singapore 117608, Singapore Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117576, Singapore Agcy Sci Technol & Res, Data Storage Inst, Singapore 117608, SingaporeAdesida, I.论文数: 0 引用数: 0 h-index: 0机构: Univ Illinois, Dept Elect & Comp Engn, Everitt Lab, Urbana, IL 61801 USA Agcy Sci Technol & Res, Data Storage Inst, Singapore 117608, Singapore
- [48] Programming characteristics of phase change random access memory using phase change simulations1600, Japan Society of Applied Physics (44):Kim, Young-Tae论文数: 0 引用数: 0 h-index: 0机构: CAE Team, Semiconductor R and D Center, Samsung Electronics, San #24, Nongseo-Ri, Yongin-City, Gyeonggi-Do 449-711, Korea, Republic of CAE Team, Semiconductor R and D Center, Samsung Electronics, San #24, Nongseo-Ri, Yongin-City, Gyeonggi-Do 449-711, Korea, Republic ofHwang, Young-Nam论文数: 0 引用数: 0 h-index: 0机构: Advanced Technology Development Team, Semiconductor R and D Center, Samsung Electronics, San #24, Nongseo-Ri, Yongin-City, Gyeonggi-Do 449-711, Korea, Republic of CAE Team, Semiconductor R and D Center, Samsung Electronics, San #24, Nongseo-Ri, Yongin-City, Gyeonggi-Do 449-711, Korea, Republic ofLee, Keun-Ho论文数: 0 引用数: 0 h-index: 0机构: CAE Team, Semiconductor R and D Center, Samsung Electronics, San #24, Nongseo-Ri, Yongin-City, Gyeonggi-Do 449-711, Korea, Republic of CAE Team, Semiconductor R and D Center, Samsung Electronics, San #24, Nongseo-Ri, Yongin-City, Gyeonggi-Do 449-711, Korea, Republic ofLee, Se-Ho论文数: 0 引用数: 0 h-index: 0机构: CAE Team, Semiconductor R and D Center, Samsung Electronics, San #24, Nongseo-Ri, Yongin-City, Gyeonggi-Do 449-711, Korea, Republic of CAE Team, Semiconductor R and D Center, Samsung Electronics, San #24, Nongseo-Ri, Yongin-City, Gyeonggi-Do 449-711, Korea, Republic ofJeong, Chang-Wook论文数: 0 引用数: 0 h-index: 0机构: Advanced Technology Development Team, Semiconductor R and D Center, Samsung Electronics, San #24, Nongseo-Ri, Yongin-City, Gyeonggi-Do 449-711, Korea, Republic of CAE Team, Semiconductor R and D Center, Samsung Electronics, San #24, Nongseo-Ri, Yongin-City, Gyeonggi-Do 449-711, Korea, Republic ofAhn, Su-Jin论文数: 0 引用数: 0 h-index: 0机构: Advanced Technology Development Team, Semiconductor R and D Center, Samsung Electronics, San #24, Nongseo-Ri, Yongin-City, Gyeonggi-Do 449-711, Korea, Republic of CAE Team, Semiconductor R and D Center, Samsung Electronics, San #24, Nongseo-Ri, Yongin-City, Gyeonggi-Do 449-711, Korea, Republic ofYeung, Fai论文数: 0 引用数: 0 h-index: 0机构: Advanced Technology Development Team, Semiconductor R and D Center, Samsung Electronics, San #24, Nongseo-Ri, Yongin-City, Gyeonggi-Do 449-711, Korea, Republic of CAE Team, Semiconductor R and D Center, Samsung Electronics, San #24, Nongseo-Ri, Yongin-City, Gyeonggi-Do 449-711, Korea, Republic ofKoh, Gwan-Hyeob论文数: 0 引用数: 0 h-index: 0机构: Advanced Technology Development Team, Semiconductor R and D Center, Samsung Electronics, San #24, Nongseo-Ri, Yongin-City, Gyeonggi-Do 449-711, Korea, Republic of CAE Team, Semiconductor R and D Center, Samsung Electronics, San #24, Nongseo-Ri, Yongin-City, Gyeonggi-Do 449-711, Korea, Republic ofJeong, Heong-Sik论文数: 0 引用数: 0 h-index: 0机构: Advanced Technology Development Team, Semiconductor R and D Center, Samsung Electronics, San #24, Nongseo-Ri, Yongin-City, Gyeonggi-Do 449-711, Korea, Republic of CAE Team, Semiconductor R and D Center, Samsung Electronics, San #24, Nongseo-Ri, Yongin-City, Gyeonggi-Do 449-711, Korea, Republic ofChung, Won-Young论文数: 0 引用数: 0 h-index: 0机构: CAE Team, Semiconductor R and D Center, Samsung Electronics, San #24, Nongseo-Ri, Yongin-City, Gyeonggi-Do 449-711, Korea, Republic of CAE Team, Semiconductor R and D Center, Samsung Electronics, San #24, Nongseo-Ri, Yongin-City, Gyeonggi-Do 449-711, Korea, Republic ofKim, Tai-Kyung论文数: 0 引用数: 0 h-index: 0机构: CAE Team, Semiconductor R and D Center, Samsung Electronics, San #24, Nongseo-Ri, Yongin-City, Gyeonggi-Do 449-711, Korea, Republic of CAE Team, Semiconductor R and D Center, Samsung Electronics, San #24, Nongseo-Ri, Yongin-City, Gyeonggi-Do 449-711, Korea, Republic ofPark, Young-Kwan论文数: 0 引用数: 0 h-index: 0机构: CAE Team, Semiconductor R and D Center, Samsung Electronics, San #24, Nongseo-Ri, Yongin-City, Gyeonggi-Do 449-711, Korea, Republic of CAE Team, Semiconductor R and D Center, Samsung Electronics, San #24, Nongseo-Ri, Yongin-City, Gyeonggi-Do 449-711, Korea, Republic ofKim, Ki-Nam论文数: 0 引用数: 0 h-index: 0机构: Advanced Technology Development Team, Semiconductor R and D Center, Samsung Electronics, San #24, Nongseo-Ri, Yongin-City, Gyeonggi-Do 449-711, Korea, Republic of CAE Team, Semiconductor R and D Center, Samsung Electronics, San #24, Nongseo-Ri, Yongin-City, Gyeonggi-Do 449-711, Korea, Republic ofKong, Jeong-Taek论文数: 0 引用数: 0 h-index: 0机构: CAE Team, Semiconductor R and D Center, Samsung Electronics, San #24, Nongseo-Ri, Yongin-City, Gyeonggi-Do 449-711, Korea, Republic of CAE Team, Semiconductor R and D Center, Samsung Electronics, San #24, Nongseo-Ri, Yongin-City, Gyeonggi-Do 449-711, Korea, Republic of
- [49] Multiple phase change structure for the scalable phase change random access memory arrayJAPANESE JOURNAL OF APPLIED PHYSICS, 2014, 53 (04)Lee, Jung-Min论文数: 0 引用数: 0 h-index: 0机构: Hanyang Univ, Dept Elect Engn, Seoul 133791, South Korea Hanyang Univ, Dept Elect Engn, Seoul 133791, South KoreaSaito, Yuta论文数: 0 引用数: 0 h-index: 0机构: Natl Inst Adv Ind Sci & Technol, Nanoelect Res Inst, Tsukuba, Ibaraki 3058562, Japan Hanyang Univ, Dept Elect Engn, Seoul 133791, South KoreaSutou, Yuji论文数: 0 引用数: 0 h-index: 0机构: Tohoku Univ, Dept Mat Sci, Sendai, Miyagi 9808579, Japan Hanyang Univ, Dept Elect Engn, Seoul 133791, South KoreaKoike, Junichi论文数: 0 引用数: 0 h-index: 0机构: Tohoku Univ, Dept Mat Sci, Sendai, Miyagi 9808579, Japan Hanyang Univ, Dept Elect Engn, Seoul 133791, South KoreaJung, Jin Won论文数: 0 引用数: 0 h-index: 0机构: Tohoku Univ, Dept Elect Engn, Sendai, Miyagi 9808579, Japan Hanyang Univ, Dept Elect Engn, Seoul 133791, South KoreaSahashi, Masashi论文数: 0 引用数: 0 h-index: 0机构: Tohoku Univ, Dept Elect Engn, Sendai, Miyagi 9808579, Japan Hanyang Univ, Dept Elect Engn, Seoul 133791, South KoreaSong, Yun-Heub论文数: 0 引用数: 0 h-index: 0机构: Hanyang Univ, Dept Elect Engn, Seoul 133791, South Korea Hanyang Univ, Dept Elect Engn, Seoul 133791, South Korea
- [50] Phase transition characteristics of Al-Sb phase change materials for phase change memory applicationAPPLIED PHYSICS LETTERS, 2013, 103 (07)Zhou, Xilin论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai 200050, Peoples R China Univ Chinese Acad Sci, Beijing 100080, Peoples R China Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai 200050, Peoples R ChinaWu, Liangcai论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai 200050, Peoples R China Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai 200050, Peoples R ChinaSong, Zhitang论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai 200050, Peoples R China Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai 200050, Peoples R ChinaRao, Feng论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai 200050, Peoples R China Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai 200050, Peoples R ChinaRen, Kun论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai 200050, Peoples R China Univ Chinese Acad Sci, Beijing 100080, Peoples R China Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai 200050, Peoples R ChinaPeng, Cheng论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai 200050, Peoples R China Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai 200050, Peoples R ChinaSong, Sannian论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai 200050, Peoples R China Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai 200050, Peoples R ChinaLiu, Bo论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai 200050, Peoples R China Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai 200050, Peoples R ChinaXu, Ling论文数: 0 引用数: 0 h-index: 0机构: Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai 200050, Peoples R ChinaFeng, Songlin论文数: 0 引用数: 0 h-index: 0机构: Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai 200050, Peoples R China Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Shanghai Key Lab Nanofabricat Technol Memory, Shanghai 200050, Peoples R China