TY - JOUR
T1 - Cryogenic scanning tunneling spectroscopy studies of inhomogeneous superconductors
AU - Millo, Oded
PY - 1997
Y1 - 1997
N2 - We applied scanning tunneling microscopy and spectroscopy, combined with magnetic susceptibility measurements and Mossbauer spectroscopy, in studies of three superconducting materials. Two belong to a new class of high TC magnetic-superconductor systems, R1.4Ceo.6RuSr2Cu2O 10-δ (R=Eu and Gd), which are magnetically ordered at TN ≫ Tc. The third is a granular normal-superconductor system, where the superconducting phase is YNi2B2C. In this paper we focus on the tunneling measurements, which exhibit large spatial variations of the local electronic properties for all three materials. Albeit, these local measurements also reveal pronounced differences between the third and the first two systems, which will be discussed in view of their macroscopic properties.
AB - We applied scanning tunneling microscopy and spectroscopy, combined with magnetic susceptibility measurements and Mossbauer spectroscopy, in studies of three superconducting materials. Two belong to a new class of high TC magnetic-superconductor systems, R1.4Ceo.6RuSr2Cu2O 10-δ (R=Eu and Gd), which are magnetically ordered at TN ≫ Tc. The third is a granular normal-superconductor system, where the superconducting phase is YNi2B2C. In this paper we focus on the tunneling measurements, which exhibit large spatial variations of the local electronic properties for all three materials. Albeit, these local measurements also reveal pronounced differences between the third and the first two systems, which will be discussed in view of their macroscopic properties.
UR - http://www.scopus.com/inward/record.url?scp=0031078832&partnerID=8YFLogxK
U2 - 10.1007/BF02399647
DO - 10.1007/BF02399647
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AN - SCOPUS:0031078832
SN - 0022-2291
VL - 106
SP - 417
EP - 422
JO - Journal of Low Temperature Physics
JF - Journal of Low Temperature Physics
IS - 3-4
ER -