Observation of Multi-Stage Superconducting Gap States in Bi_2Sr_2CaCu_2O_x Crystal Surface by LT-STM/STS
スポンサーリンク
概要
- 論文の詳細を見る
Low temperature STM/STS observation for BSCCO single crystal was carried out to investigate an intrinsic superconducting gap state of CuO_2 layer. The STM observation revealed out a mid-level-layer between the top and bottom BiO surfaces of the half unit cell in the crystal c-axis direction. The STS study on this mid-level surface brought a reproducible definite superconducting gap structure which shows a finite gap region with a low conductance level of about 5%, and which also shows a nature of wide range gap parameter of ⊿_<max>/⊿_<min>〜4 with ⊿_<min>〜10 meV. This definite gap structure is considered to be a more direct reflection of the superconducting electronic states of the CuO_2 layer than the superconducting gap structure observed at the top BiO layer.
- 社団法人日本物理学会の論文
- 1995-04-15
著者
-
Aoki Ryozo
Department Of Electrical Engineering Osaka University
-
Murakami Hironaru
Department Of Electrical Engineering Osaka University
関連論文
- ^Cu NMR Study of Superconducting Cu/Nb Multilayer-Film
- Proximity Effect-Induced Superconductivity and NMR Relaxation in Nb-Cu Multilayers
- NMR Study of the Proximity Effect in Nb-Cu Multilayers
- Effects of Organic Intercalation on Lattice Vibrations and Superconducting Properties of 2H-NbS_2
- Observation of the Finite Superconducting Gap States in La_Sr_CuO_ by Electron Tunneling
- Superconducting Transition Temperature of Indium Films Overlayered on Strontium Titanate
- Tunneling Spectroscopy in In-SrTiO_ Contact
- Negative Evidences for Charge/Spin Density Wave in ZrTe_5
- Differential Capacitance of In-SrTiO_ Contacts : Influence of the Electric-Field-Dependent Permittivity
- Critical Current and Pinning Effect in Type I Superconducting Lead Foils with Thickness Modulation
- Critical Current Measurements in Type I Superconducting Lead Foils by Shadow Electron Microscopy
- Observation of the Intermedeate State in Superconducting Lead Films by Shadow Electron Microscopy
- Inelastic Electron Tunneling Spectroscopy in MIS and MS Tunnel Junctions
- Development of a Heat-Pipe Thermal Diode and Its Heat Transport Performance
- Observation of Multi-Stage Superconducting Gap States in Bi_2Sr_2CaCu_2O_x Crystal Surface by LT-STM/STS
- Nuclear Spin-Lattice Relaxation in the Layered Compounds MS_2 and MS_2(PYRIDINE)_;M=Ta and Nb
- Landau's Laminar Structure in Superconductors under Inclined Magnetic Field
- Observation of Discrere Energy Levels by Tunneling Spectroscopy