Weak pseudogap in crystals of Pb{sub 2}Sr{sub 2}(Y,Ca)Cu{sub 3}O{sub 8+{delta}}

Journal Article · Wed Oct 01 00:00:00 EDT 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.56.R8511· OSTI ID:632654

Hsueh, Y; Statt, B W ^[1]; Reedyk, M ^[2]; Xue, J S; Greedan, J E ^[3]

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1. Department of Physics, University of Toronto, Toronto, Ontario, M5S 1A7 (CANADA)
2. Department of Physics, Brock University, St. Catharines, Ontario, L2S 3A1 (CANADA)
3. Brockhouse Institute for Material Research, McMaster University, Hamilton, Ontario, L8S 4M1 (CANADA)

We report on NMR measurements in underdoped Pb{sub 2}Sr{sub 2}(Y,Ca)Cu{sub 3}O{sub 8+{delta}} crystals. A pseudogap is observed in the Knight shift and spin-lattice relaxation rate. In contrast to other underdoped compounds, the pseudogap observed in the Knight shift is weak and occurs at a significantly lower temperature. On the other hand, the effect the pseudogap has on spin-lattice relaxation is quite similar to that in other compounds. The contrast between weak and strong pseudogaps is discussed. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 632654
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 14 Vol. 56; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CALCIUM OXIDES
COPPER OXIDES
CRYSTAL DOPING
ENERGY GAP
HIGH-TC SUPERCONDUCTORS
KNIGHT SHIFT
LEAD OXIDES
NMR SPECTRA
NUCLEAR MAGNETIC RESONANCE
SPIN-LATTICE RELAXATION
STRONTIUM OXIDES
SUPERCONDUCTIVITY
YTTRIUM OXIDES