Electron tunneling measurements in atomic scale gap filled with liquid 4He below 4.2K

K. Ienaga, T. Yokota, N. Nakashima, Y. Inagaki, T. Kawae, H. Tsujii

Research output: Contribution to journalConference article

3 Citations (Scopus)

Abstract

We report the tunneling spectroscopy investigation in an atomic scale gap filled with liquid 4He using mechanically controllable break junction (MCBJ) technique. In order to assure the filling of liquid 4He into the gap, we construct a cryostat with an inner chamber for the tunneling spectroscopy inside the vacuum jacket of the liquid 4He bath. MCBJ apparatus is installed in the inner chamber with a flexible bellows. After filling inner chamber with liquid 4He below 4.2 K, Au electrical electrodes were stretched by the mechanical force generated by a piezo device. We observed the increase of the tunnel conductance through liquid 4He compared to that in the vacuum environment.

Original languageEnglish
Article number042019
JournalJournal of Physics: Conference Series
Volume400
Issue numberPART 4
DOIs
Publication statusPublished - Jan 1 2012
Event26th International Conference on Low Temperature Physics, LT 2011 - Beijing, China
Duration: Aug 10 2011Aug 17 2011

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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