Low temperature anomaly of LO phonons in La{sub 1.85}Sr{sub 0.15}CuO₄ and YBa₂Cu₃O₇

Low temperature anomaly of LO phonons in La{sub 1.85}Sr{sub 0.15}CuO₄ and YBa₂Cu₃O₇ [electronic resource]

Inelastic neutron scattering measurements of La{sub 1.85}Sr{sub 0.15}CuO₄ and YBa₂Cu₃O₇ show that the dispersion of the high energy LO phonon mode along the (1,0,0) direction is strongly temperature dependent, and at low temperatures develops an anomalous feature indicative of dynamic cell-doubling....

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Bibliographic Details
Online Access: Online Access
Corporate Author: Los Alamos National Laboratory (Researcher)
Format: Government Document Electronic eBook
Language:English
Published: Washington, D.C. : Oak Ridge, Tenn. : United States. Dept. of Energy. Office of Energy Research ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 1999.
Subjects:
Electronic Structure.
Superconductivity.
Lanthanum Oxides.
Strontium Oxides.
Copper Oxides.
Yttrium Oxides.
Barium Oxides.
Inelastic Scattering.
Neutrons.
Phonons.
Experimental Data.
Materials Science.

MARC

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245 0 0 |a Low temperature anomaly of LO phonons in La{sub 1.85}Sr{sub 0.15}CuO₄ and YBa₂Cu₃O₇  |h [electronic resource] 
260 |a Washington, D.C. :  |b United States. Dept. of Energy. Office of Energy Research ;  |a Oak Ridge, Tenn. :  |b distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy,   |c 1999. 
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500 |a "DE99002184" 
500 |a High temperature superconductivity conference, Miami, FL (United States), 7-13 Jan 1999. 
500 |a Yethiraj, M.; Shirane, G.; Egami, T.; McQueeney, R.J.; Endoh, Y.; Petrov, Y. 
520 3 |a Inelastic neutron scattering measurements of La{sub 1.85}Sr{sub 0.15}CuO₄ and YBa₂Cu₃O₇ show that the dispersion of the high energy LO phonon mode along the (1,0,0) direction is strongly temperature dependent, and at low temperatures develops an anomalous feature indicative of dynamic cell-doubling. The anomaly does not change through superconducting transition and gradually disappears between 50 and 250 K in LSCO. Possible implications are discussed. 
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650 7 |a Lanthanum Oxides.  |2 local. 
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650 7 |a Copper Oxides.  |2 local. 
650 7 |a Yttrium Oxides.  |2 local. 
650 7 |a Barium Oxides.  |2 local. 
650 7 |a Inelastic Scattering.  |2 local. 
650 7 |a Neutrons.  |2 local. 
650 7 |a Phonons.  |2 local. 
650 7 |a Experimental Data.  |2 local. 
650 7 |a Materials Science.  |2 edbsc. 
710 2 |a Los Alamos National Laboratory.  |4 res. 
710 1 |a United States.  |b Department of Energy.  |b Office of Energy Research.  |4 spn. 
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