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Nano Research 2015, 8(12): 3898-3904 https://doi.org/10.1007/s12274-015-0889-5
Research Article | Issue | Published: 23 October 2015

Atomic resolution scanning tunneling microscope imaging up to 27 T in a water-cooled magnet

Show Author's Information Wenjie Meng1,2,  Ying Guo1,2,  Yubin Hou1,  Qingyou Lu1,2,3,4( )
High Magnetic Field LaboratoryChinese Academy of Sciences and University of Science and Technology of ChinaHefei230026China
Hefei National Laboratory for Physical Sciences at the MicroscaleUniversity of Science and Technology of ChinaHefei230026China
Hefei Science CenterChinese Academy of SciencesHefei230031China
Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing210093China
Keywords:
scanning tunneling microscopy, water-cooled magnet, strong magnetic field, TunaDriver piezoelectric motor, highly oriented pyrolytic graphite
Cite this article:
Meng W, Guo Y, Hou Y, et al. Atomic resolution scanning tunneling microscope imaging up to 27 T in a water-cooled magnet. Nano Research, 2015, 8(12): 3898-3904. https://doi.org/10.1007/s12274-015-0889-5
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Abstract Full text About this article

We report the first atomically resolved scanning tunneling microscope (STM) imaging in a water-cooled magnet (WM), for which extremely harsh vibrations and noise have been the major challenge. This custom WM-STM features an ultra-rigid and compact scan head in which the coarse approach is driven by our newly designed TunaDrive piezoelectric motor. A three-level spring hanging system is used for vibration isolation. Room-temperature raw-data images of graphite with quality atomic resolution were acquired in the presence of very strong magnetic fields, with a field strength up to 27 T, in a 32-mm-diameter bore WM with a maximum field strength of 27.5 T at a power rating of 10 MW, calibrated by nuclear magnetic resonance (NMR). This record field strength of 27 T exceeds the maximal field strength achieved by the conventional superconducting magnets. Besides, our WM-STM has paved the way to STM imaging using a 45 T, 32-mm-diameter bore hybrid magnet, which is the world's flagship magnet, producing the strongest steady magnetic field.


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About this article

Atomic resolution scanning tunneling microscope imaging up to 27 T in a water-cooled magnet

Show Author's information Wenjie Meng1,2, Ying Guo1,2, Yubin Hou1, Qingyou Lu1,2,3,4( )
High Magnetic Field LaboratoryChinese Academy of Sciences and University of Science and Technology of ChinaHefei230026China
Hefei National Laboratory for Physical Sciences at the MicroscaleUniversity of Science and Technology of ChinaHefei230026China
Hefei Science CenterChinese Academy of SciencesHefei230031China
Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing210093China

Abstract

We report the first atomically resolved scanning tunneling microscope (STM) imaging in a water-cooled magnet (WM), for which extremely harsh vibrations and noise have been the major challenge. This custom WM-STM features an ultra-rigid and compact scan head in which the coarse approach is driven by our newly designed TunaDrive piezoelectric motor. A three-level spring hanging system is used for vibration isolation. Room-temperature raw-data images of graphite with quality atomic resolution were acquired in the presence of very strong magnetic fields, with a field strength up to 27 T, in a 32-mm-diameter bore WM with a maximum field strength of 27.5 T at a power rating of 10 MW, calibrated by nuclear magnetic resonance (NMR). This record field strength of 27 T exceeds the maximal field strength achieved by the conventional superconducting magnets. Besides, our WM-STM has paved the way to STM imaging using a 45 T, 32-mm-diameter bore hybrid magnet, which is the world's flagship magnet, producing the strongest steady magnetic field.

Keywords: scanning tunneling microscopy, water-cooled magnet, strong magnetic field, TunaDriver piezoelectric motor, highly oriented pyrolytic graphite

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Publication history
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Acknowledgements

Publication history

Received: 03 June 2015
Accepted: 25 August 2015
Published: 23 October 2015
Issue date: December 2015

Copyright

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2015

Acknowledgements

Acknowledgements

This work was supported by the Major/Innovative Program of Development Foundation of Hefei Center for Physical Science and Technology, the Project of the Chinese National High Magnetic Field Facilities, the Scientific Research Grant of Hefei Science Center of CAS, and the National Natural Science Foundation of China (Nos. U1232210, 11204306 and 11374278).

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