Local superconducting density of states of ErNi2B2C
classification
❄️ cond-mat.supr-con
cond-mat.str-el
keywords
densitylocalstateserni2b2camountscrystallinedepartureelectronic
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We present local tunnelling microscopy and spectroscopy measurements at low temperatures in single crystalline samples of the magnetic superconductor ErNi2B2C. The electronic local density of states shows a striking departure from s-wave BCS theory with a finite value at the Fermi level, which amounts to half of the normal phase density of states.
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