Spin dynamics in the metallic state of YBa[sub 2](Cu[sub 0. 98]Zn[sub 0. 02])[sub 3]O[sub 6+x]
Conference
·
· International Journal of Modern Physics B
OSTI ID:6333910
- Louisiana State Univ., Baton Rouge, LA (United States). Dept. of Physics and Astronomy
- CE-Saclay, Gif sur Yvette (France). Lab. Leon Brillouin
- Univ. Paris Sud, Orsay (France). Lab. des Composes Non-Stochiometriques
Inelastic neutron scattering measurements have been carried out on a YBa[sub 2](Cu[sub 0.98]Zn[sub 0.02])[sub 3]O[sub 6+x] single crystal in both underdoped (x = 0.7) and overdoped (x = 0.97) regimes. In the zinc substituted system, spin dynamics is drastically changed in respect to the pure compound: (i) the resonance peak almost vanishes, (ii) the spin gap is filled, (iii) new antiferromagnetic excitations are found at low energy. These new magnetic fluctuations, which persist in the normal state, account for a local enhancement of AF correlations around nonmagnetic impurities. Besides, it is worth emphasizing that features, not directly related to superconductivity, i.e., the contribution to the spin dynamics apart from the resonance peak and the spin pseudo-gap observed in the underdoped regime above [Tc], coexist with the new low energy magnetic fluctuations.
- OSTI ID:
- 6333910
- Report Number(s):
- CONF-980291--
- Conference Information:
- Journal Name: International Journal of Modern Physics B Journal Volume: 12:29-31
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ANGULAR MOMENTUM
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
MAGNETIC PROPERTIES
METALLURGICAL EFFECTS
OXIDES
OXYGEN COMPOUNDS
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
SPIN
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZINC COMPOUNDS
ZINC OXIDES
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ANGULAR MOMENTUM
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
MAGNETIC PROPERTIES
METALLURGICAL EFFECTS
OXIDES
OXYGEN COMPOUNDS
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
SPIN
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZINC COMPOUNDS
ZINC OXIDES