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Nano Research

, Volume 8, Issue 12, pp 3898–3904 | Cite as

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

  • Wenjie Meng
  • Ying Guo
  • Yubin Hou
  • Qingyou Lu
Research Article

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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Copyright information

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  • Wenjie Meng
    • 1
    • 2
  • Ying Guo
    • 1
    • 2
  • Yubin Hou
    • 1
  • Qingyou Lu
    • 1
    • 2
    • 3
    • 4
  1. 1.High Magnetic Field LaboratoryChinese Academy of Sciences and University of Science and Technology of ChinaHefeiChina
  2. 2.Hefei National Laboratory for Physical Sciences at the MicroscaleUniversity of Science and Technology of ChinaHefeiChina
  3. 3.Hefei Science CenterChinese Academy of SciencesHefeiChina
  4. 4.Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjingChina

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