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Scanning tunneling microscopy and spectroscopy on cracked surfaces of superconducting CeRu2

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Abstract.

Scanning tunneling microscopy and scanning tunneling spectroscopy measurements have been performed on a single crystal of CeRu2 down to 2.2 K under a magnetic field up to 2.0 T. The sample surfaces for the measurements are prepared by cutting or cracking the single crystal at 4.2 K. The vortex lattice has been imaged by mapping the quasiparticle density of states at the Fermi energy on the surface. We have observed that the surface has been covered with microstructures a few nm in diameter. These microstructures are characteristic of the surface when the sample is cut or cracked at low temperature.

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Authors and Affiliations

  1. Department of Physics, Tokyo Institute of Technology, Ookayama, Tokyo 152-8551, Japan, , , , , , JP

    H. Sakata & N. Nishida

  2. Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan, , , , , , JP

    M. Hedo, K. Sakurai, Y. Inada & Y. Onuki

  3. Advanced Science Research Center, Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan, , , , , , JP

    E. Yamamoto & Y. Haga

Authors
  1. H. Sakata
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  2. N. Nishida
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  3. M. Hedo
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  4. K. Sakurai
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  5. Y. Inada
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  6. Y. Onuki
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  7. E. Yamamoto
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  8. Y. Haga
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Additional information

Received: 19 July 2000 / Accepted: 14 December 2000 / Published online: 11 April 2001

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Sakata, H., Nishida, N., Hedo, M. et al. Scanning tunneling microscopy and spectroscopy on cracked surfaces of superconducting CeRu2. Appl Phys A 72 (Suppl 2), S267–S269 (2001). https://doi.org/10.1007/s003390100657

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  • DOI: https://doi.org/10.1007/s003390100657

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