Tunneling Spectroscopy Studies of SmB_6 and YbB_{12}

• Authors: M. Baťková , I. Baťko , E. Konovalova , N. Shitsevalova
• Languages of publication: EN

Abstracts

EN

Reported electron tunneling studies of SmB_6 and YbB_{12} in the temperature region with a strongly temperature activated transport reveal a qualitative change of tunneling regime upon cooling. While the differential conductance curves above 50 K resemble the tunneling between two different metals, the spectra observed at 4.2 K are typical of the tunneling between a metal and a (narrow-gap) valence fluctuating semiconductor.

Keywords

EN

71.28.+d; 75.30.Mb; 73.40.Gk

Discipline

• 73.40.Gk: Tunneling(for tunneling in quantum Hall effects, see 73.43.Jn)
• 75.30.Mb: Valence fluctuation, Kondo lattice, and heavy-fermion phenomena(see also 71.27.+a Strongly correlated electron systems, heavy fermions; for heavy-fermion superconductors, see 74.70.Tx)
• 71.28.+d: Narrow-band systems; intermediate-valence solids(for magnetic aspects, see 75.20.Hr and 75.30.Mb in magnetic properties and materials)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 113
• Issue: 1
• Pages: 255-258

Dates

published

2008-01

received

2007-07-09

Contributors

author

M. Baťková

• Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovak Republic

author

I. Baťko

• Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovak Republic

author

E. Konovalova

• Institute for Problems of Material Science, NASU, Krzyzhanovskii str. 3, 252680 Kiev, Ukraine

author

N. Shitsevalova

• Institute for Problems of Material Science, NASU, Krzyzhanovskii str. 3, 252680 Kiev, Ukraine

References

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Identifiers

DOI

10.12693/APhysPolA.113.255