Abstract
Scanning tunneling microscopy (STM) and spectroscopy (STS) measurements have been performed on an intermetallic compound CeRu2 down to 2.2 K. Vacuum tunneling spectra have been measured on the surface prepared by cracking the sample in helium gas at 4.2 K. The shape and temperature dependence of the quasiparticle density of states, Ns(E, r), have been well interpreted in terms of s-wave BCS superconductors. In magnetic fields, the hexagonal vortex lattice has been imaged by measurements of NS(E = 0, r) up to 2 T. This is the first observation of the vortex lattice by STS in heavy-fermion superconductors.
| Original language | English |
|---|---|
| Pages (from-to) | 1970-1973 |
| Number of pages | 4 |
| Journal | journal of the physical society of japan |
| Volume | 69 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - Jul 2000 |
| Externally published | Yes |
Keywords
- CeRu
- Scanning tunneling microscopy
- Scanning tunneling spectroscopy
- Superconductor
- Vortex lattice
ASJC Scopus subject areas
- Physics and Astronomy(all)
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Sakata, H., Nishida, N., Hedo, M., Sakurai, K., Inada, Y., Onuki, Y., Yamamoto, E., & Haga, Y. (2000). Vortex Lattice and Quasiparticle Density of States in CeRu2 Studied by Scanning Tunneling Spectroscopy. journal of the physical society of japan, 69(7), 1970-1973. https://doi.org/10.1143/JPSJ.69.1970