Abstract
We report systematic Cu-NMR study on HgBa2Ca3Cu4O10+y with Tc = 123K comprising respective 4-fold and 5-fold two CuO2 planes surrounded by square and pyramidal oxygens. Possible structure and temperature dependence of the normal-state pseudogap have been extracted from the steep decrease of the spin contribution in the Knight shift, Ks below TK* ∼ 220 K. By assuming the linear increase of a size of pseudogap between TK* and Tc with the dx2-y2 symmetry, the T-dependence of Ks/Kn in both 4- and 5-fold is reproduced below TK*.
Original language | English |
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Pages (from-to) | 571-572 |
Number of pages | 2 |
Journal | Physica B: Condensed Matter |
Volume | 259-261 |
DOIs | |
Publication status | Published - 1999 |
Externally published | Yes |
Keywords
- High-T superconductor
- NMR
- Pseudogap
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering