High-energy spin excitations in YBa{sub 2}Cu{sub 3}O{sub 6.5>}

Journal Article · Sat Nov 01 04:00:00 EST 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.56.R11439· OSTI ID:544970

Bourges, P ^[1]; Fong, H F ^[2]; Regnault, L P ^[3]; Bossy, J ^[4]; Vettier, C ^[5]; Milius, D L; Aksay, I A ^[6]; Keimer, B ^[2]

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1. Laboratoire Leon Brillouin, CEA-CNRS, CE Saclay, 91191 Gif sur Yvette (France)
2. Department of Physics, Princeton University, Princeton, New Jersey 08544 (United States)
3. CEA Grenoble, Departement de Recherche Fondamentale sur la Matiere Condensee, 38054 Grenoble cedex 9 (France)
4. Institut Laue-Langevin, 156X, 38042 Grenoble Cedex 9 (France)
5. European Synchrotron Research Facility, BP 220, 38043 Grenoble Cedex (France)
6. Department of Chemical Engineering, Princeton University, Princeton, New Jersey 08544 (United States)

Inelastic neutron scattering has been used to obtain a comprehensive description of the absolute dynamical spin susceptibility {chi}{sup {double_prime}}({bold q},{omega}) of the underdoped superconducting cuprate YBa{sub 2}Cu{sub 3}O{sub 6.5} (T{sub c}=52 K) over a wide range of energies and temperatures (2 meV {le}{h_bar}{omega}{le} 120 meV and 5 K{le}T{le}200 K). Spin excitations of two distinct symmetries (even and odd under the exchange of two adjacent CuO{sub 2} layers) are observed which exhibit {ital two different} gaplike features (rather than a single {open_quotes}spin pseudogap{close_quotes}). The excitations show dispersive behavior at high energies. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 544970
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 18 Vol. 56; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
COPPER OXIDES
ENERGY GAP
HIGH-TC SUPERCONDUCTORS
MAGNETIC SUSCEPTIBILITY
NEUTRON DIFFRACTION
SPIN
TEMPERATURE RANGE 0000-0013 K
TEMPERATURE RANGE 0013-0065 K
TEMPERATURE RANGE 0065-0273 K
YTTRIUM OXIDES