Neutron Scattering Study of Soft Phonons and Diffuse Scattering in Insulating La_<1.95>Sr_<0.05>CuO_4(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
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概要
- 論文の詳細を見る
Soft phonons and diffuse scattering in insulating La_<2-x>Sr_xCuO_4 (x = 0.05) have been studied by the neutron scattering technique. The X-point phonon softens from high temperature towards the structural transition temperature T_s = 410K, and the Z-point phonon softens again below 200 K. The Z-point phonon softening persists to low temperature, in contrast to the behavior observed in the superconducting x = 0.15 compound, in which the Z-point phonon hardens below T_c. The diffuse scattering associated with the structural phase transition at 410 K appears at commensurate positions. These results highlight interesting differences between superconducting and insulating samples.
- 社団法人日本物理学会の論文
- 2004-12-15
著者
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SHIRANE Gen
Department of Physics, Brookhaven National Laboratory
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WAKIMOTO Shuichi
Japan Atomic Energy Agency
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R.J Birgeneau
MIT
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Birgeneau R.
Ucberkeley
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Birgeneau R
Univ. Toronto Ontario Can
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Birgeneau R.
Department Of Physics And Cneter For Materials Science And Engineering
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Shirane G
Department Of Physics Brookhaven National Laboratory
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Shirane Gen
Department Of Physics Brookhaven National Laboratory
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Birgeneau R
Department Of Physics University Of California
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Birgeneau R.
Department Of Physics University Of Toronto Toronto
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Birgeneau J.r.
Department Of Physics And Center For Materials Science And Enginnering Massachusetts Institute Of Te
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Birgeneau J.
Department Of Physics Massachusetts Institute Of Technology
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Lee Seunghun
Nist Center For Neutron Research National Institute Of Standards And Technology
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GEHRING Peter
NIST Center for Neutron Reseach, NIST
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WAKIMOTO Shuichi
Department of Physics, University of Toronto
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BlRGENEAU Robert
Department of Physics, University of Toronto
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Gehring P
Nist Md Usa
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Shirane Gen
Brookhavcn National Laboratory Upion
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Blrgeneau Robert
Department Of Physics University Of California
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Wakimoto Shuichi
Department Of Physics Tohoku University
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R.j Birgeneau
Univ. Toronto Ontario Can
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Wakimoto Shuichi
Department Of Physics University Of Toronto
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