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

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 نشر من قبل Steffen Wirth
 تاريخ النشر 2010
  مجال البحث فيزياء
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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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