In this paper, a scanning tunneling microscope (STM) is presented that operates in a 27.5 T magnetic field within a hybrid magnet. The coarse approach of the STM is realized by using an inertial piezoelectric motor, and the scanning is realized by using a miniature scanner, which stands alone on a sapphire base. A combined vibration isolation system consisting of a brick–rubber–brick stack and two springs is used to isolate the vibration generated from the magnet. An enclosed copper shield is used to prevent sound from entering the tip–sample junction. The sound and vibration isolation measures highly improve the stability of the STM imaging. All the materials selected to construct the STM head are nonmagnetic. The drift rates of the STM in the X–Y plane and Z direction are as low as 26.2 pm/min and 34.6 pm/min, respectively, under ambient conditions. The high performance of the homebuilt STM was demonstrated by graphite hexagonal lattice images obtained in magnet fields ranging from 0 T to 27.5 T even without the protection of a vacuum and low temperatures. As far as known, this is the first STM that operates in a hybrid magnet. It is also the first STM that can obtain graphite hexagonal lattice images in magnetic fields up to 27.5 T. Our results greatly contribute to the further STM studies under ambient conditions and ultrahigh magnetic fields.
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Research Article|
May 19 2020
A hybrid magnet based scanning tunneling microscope
Jihao Wang;
Jihao Wang
1
Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory and High Magnetic Field Laboratory of Anhui Province, Chinese Academy of Sciences
, Hefei, Anhui 230031, China
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Tao Geng;
Tao Geng
1
Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory and High Magnetic Field Laboratory of Anhui Province, Chinese Academy of Sciences
, Hefei, Anhui 230031, China
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Wenjie Meng;
Wenjie Meng
1
Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory and High Magnetic Field Laboratory of Anhui Province, Chinese Academy of Sciences
, Hefei, Anhui 230031, China
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Pengcheng Huang;
Pengcheng Huang
1
Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory and High Magnetic Field Laboratory of Anhui Province, Chinese Academy of Sciences
, Hefei, Anhui 230031, China
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Kesen Zhao;
Kesen Zhao
1
Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory and High Magnetic Field Laboratory of Anhui Province, Chinese Academy of Sciences
, Hefei, Anhui 230031, China
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Jing Zhang
;
Jing Zhang
1
Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory and High Magnetic Field Laboratory of Anhui Province, Chinese Academy of Sciences
, Hefei, Anhui 230031, China
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Qiyuan Feng;
Qiyuan Feng
1
Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory and High Magnetic Field Laboratory of Anhui Province, Chinese Academy of Sciences
, Hefei, Anhui 230031, China
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Tengfei Guo;
Tengfei Guo
1
Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory and High Magnetic Field Laboratory of Anhui Province, Chinese Academy of Sciences
, Hefei, Anhui 230031, China
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Kui Xiang;
Kui Xiang
1
Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory and High Magnetic Field Laboratory of Anhui Province, Chinese Academy of Sciences
, Hefei, Anhui 230031, China
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Yubin Hou
;
Yubin Hou
a)
1
Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory and High Magnetic Field Laboratory of Anhui Province, Chinese Academy of Sciences
, Hefei, Anhui 230031, China
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Wenge Chen;
Wenge Chen
1
Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory and High Magnetic Field Laboratory of Anhui Province, Chinese Academy of Sciences
, Hefei, Anhui 230031, China
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Yalin Lu;
Yalin Lu
2
Anhui Laboratory of Advanced Photon Science and Technology, University of Science and Technology of China
, Hefei, Anhui 230026, China
3
Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China
, Hefei, Anhui 230026, China
4
Hefei Science Center, Chinese Academy of Sciences
, Hefei 230031, China
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Qingyou Lu
Qingyou Lu
a)
1
Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory and High Magnetic Field Laboratory of Anhui Province, Chinese Academy of Sciences
, Hefei, Anhui 230031, China
2
Anhui Laboratory of Advanced Photon Science and Technology, University of Science and Technology of China
, Hefei, Anhui 230026, China
3
Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China
, Hefei, Anhui 230026, China
4
Hefei Science Center, Chinese Academy of Sciences
, Hefei 230031, China
5
Collaborative Innovation Center of Advanced Microstructures, Nanjing University
, Nanjing 210093, China
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Rev. Sci. Instrum. 91, 053702 (2020)
Article history
Received:
November 27 2019
Accepted:
April 24 2020
Connected Content
A correction has been published:
Publisher’s Note: “A hybrid magnet based scanning tunneling microscope” [Rev. Sci. Instrum. 91, 053702 (2020)]
Citation
Jihao Wang, Tao Geng, Wenjie Meng, Pengcheng Huang, Kesen Zhao, Jing Zhang, Qiyuan Feng, Tengfei Guo, Kui Xiang, Yubin Hou, Wenge Chen, Yalin Lu, Qingyou Lu; A hybrid magnet based scanning tunneling microscope. Rev. Sci. Instrum. 1 May 2020; 91 (5): 053702. https://doi.org/10.1063/1.5140423
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