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arXiv · 1002.2878

Scanning Tunneling Microscopy studies on CeCoIn$_5$ and CeIrIn$_5$

S. Ernst·S. Wirth·F. Steglich·Z. Fisk·J. L. Sarrao·J. D. Thompson
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Abstract

High--quality single crystals of the heavy fermion superconductors CeCoIn$_5$ and CeIrIn$_5$ have been studied by means of low--temperature Scanning Tunneling Microscopy. Methods were established to facilitate \textit{in-situ} sample cleaving. Spectroscopy in CeCoIn$_5$ reveals a gap which persists to above $T_c$, possibly evidencing a precursor state to SC. Atomically resolved topographs show a rearrangement of the atoms at the crystal surface. This modification at the surface might influence the surface properties as detected by tunneling spectroscopy.

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S. Ernst, S. Wirth, F. Steglich, Z. Fisk, J. L. Sarrao, J. D. Thompson. 2010-02-15. Scanning Tunneling Microscopy studies on CeCoIn$_5$ and CeIrIn$_5$. https://doi.org/10.1002/pssb.200983035

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