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100 MHz large bandwidth preamplifier and record-breaking 50 kHz scanning rate quantum point contact mode probe microscopy imaging with atomic resolution

文献类型：期刊论文

作者Li, Quan Feng1; Wang, Yang1; Wang, Fang2; Hou, Yubin3; Lu, Qingyou3,4
刊名REVIEW OF SCIENTIFIC INSTRUMENTS
出版日期2021
卷号92
ISSN号0034-6748
DOI10.1063/5.0024802
通讯作者Li, Quan Feng(lqfeng@mail.ustc.edu.cn) ; Lu, Qingyou(qxl@ustc.edu.cn)
英文摘要The high-bandwidth preamplifier is a vital component designed to increase the scanning speed of a high-speed scanning tunneling microscope (STM). However, the bandwidth is limited not only by the characteristic G Omega feedback resistor R-F but also by the characteristic unity-gain-stable operational amplifier (UGS-OPA) in the STM preamplifier. Here, we report that paralleling a resistor with the tunneling junction (PRTJ) can break both limitations. Then, the UGS-OPA can be replaced by a higher rate, higher antinoise ability, decompensated OPA. By doing so, a bandwidth of more than 100 MHz was achieved in the STM preamplifier with decompensated OPA657, and a higher bandwidth is possible. High-clarity atomic resolution STM images were obtained under about 10 MHz bandwidth and quantum point contact microscopy mode with a record-breaking line rate of 50 k lines/s and a record-breaking frame rate of 250 frames/s. Both the PRTJ method and the decompensated OPA will pave the way for higher scanning speeds and play a key role in the design of high-performance STMs.
WOS关键词TUNNELING-MICROSCOPY ; FRICTION ; DYNAMICS
资助项目National Natural Science Foundation of China[11304082] ; National Natural Science Foundation of China[U1932216] ; National Natural Science Foundation of China[51627901] ; National Key R&D Program of China[2017YFA0402903] ; National Key R&D Program of China[2016YFA0401003] ; Scientific Research Equipment Developing Project of the Chinese Academy of Sciences[YZ201628] ; Maintenance and Renovation Project for CAS Major Scientific and Technological Infrastructure[DSS-WXGZ-2019-0011] ; Science and Technology Department of Henan Province[182102210367] ; Science and Technology Department of Henan Province[182102210370]
WOS研究方向Instruments & Instrumentation ; Physics
语种英语
WOS记录号WOS:000609500000001
出版者AMER INST PHYSICS
资助机构National Natural Science Foundation of China ; National Key R&D Program of China ; Scientific Research Equipment Developing Project of the Chinese Academy of Sciences ; Maintenance and Renovation Project for CAS Major Scientific and Technological Infrastructure ; Science and Technology Department of Henan Province
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/119865]  
专题中国科学院合肥物质科学研究院
通讯作者Li, Quan Feng; Lu, Qingyou
作者单位1.Henan Normal Univ, Sch Phys, Henan Key Lab Photovolta Mat, Xinxiang 453007, Henan, Peoples R China
2.Henan Normal Univ, Coll Elect & Elect Engn, Xinxiang 453007, Henan, Peoples R China
3.Chinese Acad Sci, Anhui Prov Key Lab Condensed Matter Phys Extreme, High Magnet Field Lab, Hefei 230031, Anhui, Peoples R China
4.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China
推荐引用方式
GB/T 7714		 Li, Quan Feng,Wang, Yang,Wang, Fang,et al. 100 MHz large bandwidth preamplifier and record-breaking 50 kHz scanning rate quantum point contact mode probe microscopy imaging with atomic resolution[J]. REVIEW OF SCIENTIFIC INSTRUMENTS,2021,92.
APA Li, Quan Feng,Wang, Yang,Wang, Fang,Hou, Yubin,&Lu, Qingyou.(2021).100 MHz large bandwidth preamplifier and record-breaking 50 kHz scanning rate quantum point contact mode probe microscopy imaging with atomic resolution.REVIEW OF SCIENTIFIC INSTRUMENTS,92.
MLA Li, Quan Feng,et al."100 MHz large bandwidth preamplifier and record-breaking 50 kHz scanning rate quantum point contact mode probe microscopy imaging with atomic resolution".REVIEW OF SCIENTIFIC INSTRUMENTS 92(2021).

入库方式： OAI收割

来源：合肥物质科学研究院

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