Phonon contribution on the high Tc cooper pairing investigated by tunnelling spectroscopy

R. Aoki; H. Murakami; T. Kita; M. Shirai; Y. Nishio; V. M. Svistunov; A. I. Dyachenko; D. M. Afanassyev

doi:10.1016/0921-4526(95)00686-9

Phonon contribution on the high T_c cooper pairing investigated by tunnelling spectroscopy

R. Aoki, H. Murakami, T. Kita, M. Shirai, Y. Nishio, V. M. Svistunov, A. I. Dyachenko, D. M. Afanassyev

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

Improved tunneling spectroscopy on BSCCO(2212) single crystal provided certain spectrum of quasiparticles that mediate the strong Cooper pairing, and it reveals that optical phonons due to the oxygen oscillations in and around the [CuO₂] net-plane play a significant role. The elucidated electron-phonon coupling intensities α²F(ω) shows an exceeding peak at 72 meV of the breathing mode relating to the charge fluctuations rather than at 35 meV of the B_1g mode which may enhance the spin correlation. Beyond the single phonon energy range ℏω_D, further significant spectrum peaks was observed and their characteristic energies were assigned in terms of ε₀ = 72meV as nε₀ + ℏω_ph.

Original language	English
Pages (from-to)	172-174
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	219-220
Issue number	1-4
DOIs	https://doi.org/10.1016/0921-4526(95)00686-9
Publication status	Published - 1996 Apr 1
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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title = "Phonon contribution on the high Tc cooper pairing investigated by tunnelling spectroscopy",

abstract = "Improved tunneling spectroscopy on BSCCO(2212) single crystal provided certain spectrum of quasiparticles that mediate the strong Cooper pairing, and it reveals that optical phonons due to the oxygen oscillations in and around the [CuO2] net-plane play a significant role. The elucidated electron-phonon coupling intensities α2F(ω) shows an exceeding peak at 72 meV of the breathing mode relating to the charge fluctuations rather than at 35 meV of the B1g mode which may enhance the spin correlation. Beyond the single phonon energy range ℏωD, further significant spectrum peaks was observed and their characteristic energies were assigned in terms of ε0 = 72meV as nε0 + ℏωph.",

author = "R. Aoki and H. Murakami and T. Kita and M. Shirai and Y. Nishio and Svistunov, {V. M.} and Dyachenko, {A. I.} and Afanassyev, {D. M.}",

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doi = "10.1016/0921-4526(95)00686-9",

language = "English",

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T1 - Phonon contribution on the high Tc cooper pairing investigated by tunnelling spectroscopy

AU - Aoki, R.

AU - Murakami, H.

AU - Kita, T.

AU - Shirai, M.

AU - Nishio, Y.

AU - Svistunov, V. M.

AU - Dyachenko, A. I.

AU - Afanassyev, D. M.

PY - 1996/4/1

Y1 - 1996/4/1

N2 - Improved tunneling spectroscopy on BSCCO(2212) single crystal provided certain spectrum of quasiparticles that mediate the strong Cooper pairing, and it reveals that optical phonons due to the oxygen oscillations in and around the [CuO2] net-plane play a significant role. The elucidated electron-phonon coupling intensities α2F(ω) shows an exceeding peak at 72 meV of the breathing mode relating to the charge fluctuations rather than at 35 meV of the B1g mode which may enhance the spin correlation. Beyond the single phonon energy range ℏωD, further significant spectrum peaks was observed and their characteristic energies were assigned in terms of ε0 = 72meV as nε0 + ℏωph.

AB - Improved tunneling spectroscopy on BSCCO(2212) single crystal provided certain spectrum of quasiparticles that mediate the strong Cooper pairing, and it reveals that optical phonons due to the oxygen oscillations in and around the [CuO2] net-plane play a significant role. The elucidated electron-phonon coupling intensities α2F(ω) shows an exceeding peak at 72 meV of the breathing mode relating to the charge fluctuations rather than at 35 meV of the B1g mode which may enhance the spin correlation. Beyond the single phonon energy range ℏωD, further significant spectrum peaks was observed and their characteristic energies were assigned in terms of ε0 = 72meV as nε0 + ℏωph.

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