Tunneling spectroscopy of the heavy-fermion superconductor CeCu2Si2
I. Iguchi, T. Yasuda, Y. Nuki, T. Komatsubara
DOI 10.1103/PhysRevB.35.8873 · Physical Review B
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Abstract
Single-particle tunneling spectroscopy between a CeCu2Si2 ingot and a Pb film is presented. The observed dynamic tunnel resistance as a function of junction voltage under an applied magnetic field shows an asymmetric behavior typical of valence-fluctuation compounds. Below the transition temperature of CeCu2Si2 under no magnetic field, a series of small structures related to CeCu2Si2 gap properties develop. The result suggests that CeCu2Si2 may be a singlet d-wave superconductor according to the tunnel calculation of Tachiki, Nakahara, and Teshima.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| CeCu2Si2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.74 | Pressure not reported | unknown |
| CeCu2Si2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.74 | Pressure not reported | unknown |
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