منابع مشابه
Fully gapped superconductivity with no sign change in the prototypical heavy - fermion CeCu 2 Si
Department of Physics, Kyoto University, Kyoto 606-8502, Japan. Department of Advanced Materials Science, University of Tokyo, Kashiwa, Chiba 277-8561, Japan. H. H. Wills Physics Laboratory, University of Bristol, Bristol BS8 1TL, UK. Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan. Laboratoire des Solides Irradiés, École Polytechnique, CNRS, Commissariat ...
متن کاملFully gapped superconductivity with no sign change in the prototypical heavy-fermion CeCu2Si2
In exotic superconductors, including high-Tc copper oxides, the interactions mediating electron Cooper pairing are widely considered to have a magnetic rather than a conventional electron-phonon origin. Interest in this exotic pairing was initiated by the 1979 discovery of heavy-fermion superconductivity in CeCu2Si2, which exhibits strong antiferromagnetic fluctuations. A hallmark of unconventi...
متن کاملLow-temperature magnetothermal transport investigation of a Ni-based superconductor BaNi2As2: evidence for fully gapped superconductivity.
We have performed low-temperature specific heat and thermal conductivity measurements of the Ni-based superconductor BaNi2As2 (T{c}=0.7 K) in a magnetic field. In a zero field, thermal conductivity shows T-linear behavior in the normal state and exhibits a BCS-like exponential decrease below T{c}. The field dependence of the residual thermal conductivity extrapolated to zero temperature is indi...
متن کاملStrong odd-frequency correlations in fully gapped Zeeman-split superconductors
It is now well established that at a superconductor/ferromagnet (S/F) interface an unconventional superconducting state arises in which the pairing is odd-frequency. The hallmark signature of this superconducting state is generally understood to be an enhancement of the electronic density of states (DoS) at subgap energies close to the S/F interface. However, here we show that an odd frequency ...
متن کاملExperiments on Ladders Reveal a Complex Interplay between a Spin-gapped Normal State and Superconductivity
In recent years, the study of ladder materials has developed into a well-established area of research within the general context of Strongly Correlated Electrons. This effort has been triggered by an unusual cross-fertilization between theory and experiments. In this paper, the main experimental results obtained in the context of ladders are reviewed from the perspective of a theorist. Emphasis...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2011
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.83.094527