Ultrasonic Studies and Phonon Modes of (RE) Ba_2Cu_3O_7

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概要

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• Temperature dependences of an ultrasonic attenuation coefficient a(T) and soundvelocity V,(T) have been measured for high-Cf. superco?tductors (RE)Ba.Cu,0.(RE=Y, Nd, Sm, Dy, Era. On increasing the ionic radius from Er to Nd, the following was found: (i) The increase of the T. is found to be< 1 t<. (ii) The peak positionsin a('7') versus T curves which correspond to the energies of ojctical phonons in a low-energy region show an increase by - 10%. This change may be associated with the in-crease of the lattice constants by - 1%. (iii) The sound veloc:ity becomes larger, butthe change is mainly caused by the difference in the degree of l'ulling of the crystals. Us-ing a comparison of the calculated results of phonon dispersion curves by Yasuda andMase, a brief discussion is presented regarding the relation between the change ofphonon spectra and that of T. within the BCS-McMillan scUneme.[(RE)Ba.Cu,0., high-7'. stxperconductivity, ul1.rasonie atlenuation coefficient, lf sound velocity, phonon spectral

• 社団法人日本物理学会の論文
• 1989-01-15

著者

• Mase Shoichi

  Department Of General Education Aichi Institute Of Technology

• Horie Yuuji

  Department Of Electrical And Electronics Engineering Kagoshima University

• TERASHI Yuichiro

  Department of Physics,Kyushu University

• Terashi Yuichiro

  Department Of Physics Kyushu University

関連論文

• Effect of n=1 Buffer Layers on n=2 and n=3 Thin Films of Bi_2Sr_2Ca_Cu_nO_y
• Effects of Magnetic Field Dependence of Deformation Potentials upon Line Shapes of the Giant Quantum Attenuation of Sound Waves in Bismuth
• Further Study of the Occurrence of the Excitonic Phase Transition in Bismuth under Strong Magnetic Fields by Ultrasonic Attenuation
• Some Anomalies in Magnetoacoustic Attenuation in Bismuth
• Anomalous Peak in the Magnetoacoustic Attenuation Coefficient Versus Temperature Curve in Bismuth
• Magnetoacoustic Attenuation in Semimetals. I. Extraordinarily Large Attenuation Peak in Bismuth for q^(81C8)H〜90゜
• Giant Quantum Attenuation of Sound Waves in Bismuth. : II. Line Shape of the Attenuation Coefficient
• Giant Quantum Attenuation of Sound Waves in Bismuth. : I. Spin Splitting Factors of Electrons and Holes
• Large Dip and Hump Type Quantum Oscillations in Magnetoacoustic Attenuation in Dilute Bi_1-xSb_x Alloys for q∧H〜90°. II. Theory
• Large Dip and Hump Type Quantum Oscillations in Magnetoacoustic Attenuation in Dilute Bi_1-xSb_x Alloys for q∧H〜90°. I. Experiment
• Magnetoacoustic Attenuation in Semimetals. IV. Line Shape Analysis of Giant Quantum Attenuation in Bismuth and Bismuth-Antimony Alloys
• Magnetoacoustic Attenuation in Semimetals. III. Enhancement of Quantum Oscillations in Bismuth-Antimony Alloys for q^(81C8)H〜90゜
• Landau Level Broadening of the Electrons in Antimony
• Measurement of Galvanomagnetic Tensors of Bismuth Single Crystals at Low Temperatures
• Temperature Dependence of Some Fundamental Physical Quantities in Yba_2Cu_3O_7 : Electrical Properties of Condensed Matter
• Flux-Pinning Properties of Yba_2Cu_3O_7 : Electrical Properties of Condensed Matter
• Phonon Dispersion Curves of High T_c Superconductors.II.YBa_2Cu_3O_7
• Phonon Dispersion Curves of High T_c Superconductors. : I.(La_Sr_x)_2CuO_4
• Anomalies in Giant Quantum Attenuation of Sound Waves in Bismuth at High Magnetic Fields. II. : Existence of Extra Attenuation Peaks
• Anomalies in Giant Quantum Attenuation of Sound Waves in Bismuth at High Magnetic Fields. I. : Temperature and Frequency Dependences
• New Ultrasonic Method to Investigate Flux Pinning Properties of Superconducting Thin Films
• Electrical Transport and Ultrasonic Studies of Flux Creep and Intrinsic Pinning in High T_c superconductors : III-B Flux-Line Dynamics : III Oxide Superconductors, Experiments III : Superconducting State
• Martensitic Transformation in In_Tl_xAlloys
• Effects of the Electron-Hole Interaction on the Giant Quantum Attenuation and Velocity Change of Sound Waves in Pyrolytic Graphite
• Magnetoacoustic Attenuation in Semimetals. V. : Giant Quantum Attenuation in Pyrolytic Graphite
• Preparation of Single Phase (Bi_Pb_)_2Sr_2Ca_2Cu_3O_y Films with Preferential Orientation of C-Axis by Laser Ablation Method
• Galvanomagnetic Tensors of Bismuth Single Crystals at Low Temperatures
• Electron-Phonon Coupling Constant of the Oxide Superconductor BaPb_Bi_xO_3
• Electronic Structure and Diamagnetism of Graphite
• Magnetoacoustic Attenuation in Semimetals. II. Tilt Effect in Bismuth and Bismuth-Antimony Alloys
• Electron-Hole Recombination Effect on the Quantum Oscillations of Sound Velocity for q ∧ H〜90°in Dilute Bi_Sb_x Alloys
• Some Anomalies in Magnetoacoustic Attenuation in Pyrolytic Graphite
• Magnetoacoustic Attenuation in Bismuth
• Ultrasonic Studies and Phonon Modes of (RE) Ba_2Cu_3O_7
• Theoretical Analysis of a Switched-Capacitor Wien Bridge Oscillator
• Switched-Cabacitor Phase-Shifter Oscillators
• Some Anomalies in Magnetoacoustic Attenuation in Antimony at High Magnetic Fields
• Spin Splitting Factor and Deformation Potential Tensor Components of Holes in Antimony
• Algebraic Method to obtain Irreducible Representations of Space Groups with an Application to White Tin
• A New Phenomenon is Sound Attenuation in Bismuth under Very Strong Magnetic Fields
• Phonon Dispersion Curves and Density of States Curves of Bi_2Sr_2CaCu_2O_and Bi_2Sr_2Ca_2Cu_3O_
• Calculations of the Phonon Structure in YBa_2Cu_3O_
• Giant Quantum Attenuation of Sound Waves in Antimony. : I. Deformation Potential Constants and Spin Splitting Factors of Electrons
• Investigation of Warping of the Electron Fermi Surface of Antimony by Giant Quantum Attenuation of Sound Waves
• Quantum Oscillation of Electromagnetic Wave Absorption in Metals
• Electronic Structure of Bismuth Type Crystals, II
• Electronic Structure of Bismuth Type Crystals

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