Superconductivity-induced self-energy evolution of the nodal electron of optimally doped Bi2 Sr2 Ca0.92 Y0.08 Cu2 O8+δ

W. S. Lee; W. Meevasana; S. Johnston; D. H. Lu; I. M. Vishik; R. G. Moore; H. Eisaki; N. Kaneko; T. P. Devereaux; Z. X. Shen

doi:10.1103/PhysRevB.77.140504

Superconductivity-induced self-energy evolution of the nodal electron of optimally doped Bi2 Sr2 Ca0.92 Y0.08 Cu2 O8+δ

W. S. Lee, W. Meevasana, S. Johnston, D. H. Lu, I. M. Vishik, R. G. Moore, H. Eisaki, N. Kaneko, T. P. Devereaux, Z. X. Shen

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Abstract

The temperature dependent evolution of the renormalization effect in optimally doped Bi2 Sr2 Ca0.92 Y0.08 Cu2 O8+δ along the nodal direction has been studied via angle-resolved photoemission spectroscopy. Fine structure is observed in the real part of the self-energy (Re Σ), including a subkink and maximum, suggesting that electrons couple to a spectrum of bosonic modes, instead of just one mode. Upon cooling through the superconducting phase transition, the fine structures of the extracted Re Σ exhibit a two-processes evolution demonstrating an interplay between kink renormalization and superconductivity. We show that this two-process evolution can be qualitatively explained by a simple Holstein model in which a spectrum of bosonic modes is considered.

Original language	English
Article number	140504
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	77
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevB.77.140504
State	Published - Apr 11 2008
Externally published	Yes

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Lee, W. S., Meevasana, W., Johnston, S., Lu, D. H., Vishik, I. M., Moore, R. G., Eisaki, H., Kaneko, N., Devereaux, T. P., & Shen, Z. X. (2008). Superconductivity-induced self-energy evolution of the nodal electron of optimally doped Bi2 Sr2 Ca0.92 Y0.08 Cu2 O8+δ. Physical Review B - Condensed Matter and Materials Physics, 77(14), Article 140504. https://doi.org/10.1103/PhysRevB.77.140504

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title = "Superconductivity-induced self-energy evolution of the nodal electron of optimally doped Bi2 Sr2 Ca0.92 Y0.08 Cu2 O8+δ",

abstract = "The temperature dependent evolution of the renormalization effect in optimally doped Bi2 Sr2 Ca0.92 Y0.08 Cu2 O8+δ along the nodal direction has been studied via angle-resolved photoemission spectroscopy. Fine structure is observed in the real part of the self-energy (Re Σ), including a subkink and maximum, suggesting that electrons couple to a spectrum of bosonic modes, instead of just one mode. Upon cooling through the superconducting phase transition, the fine structures of the extracted Re Σ exhibit a two-processes evolution demonstrating an interplay between kink renormalization and superconductivity. We show that this two-process evolution can be qualitatively explained by a simple Holstein model in which a spectrum of bosonic modes is considered.",

author = "Lee, {W. S.} and W. Meevasana and S. Johnston and Lu, {D. H.} and Vishik, {I. M.} and Moore, {R. G.} and H. Eisaki and N. Kaneko and Devereaux, {T. P.} and Shen, {Z. X.}",

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doi = "10.1103/PhysRevB.77.140504",

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Lee, WS, Meevasana, W, Johnston, S, Lu, DH, Vishik, IM, Moore, RG, Eisaki, H, Kaneko, N, Devereaux, TP & Shen, ZX 2008, 'Superconductivity-induced self-energy evolution of the nodal electron of optimally doped Bi2 Sr2 Ca0.92 Y0.08 Cu2 O8+δ', Physical Review B - Condensed Matter and Materials Physics, vol. 77, no. 14, 140504. https://doi.org/10.1103/PhysRevB.77.140504

TY - JOUR

T1 - Superconductivity-induced self-energy evolution of the nodal electron of optimally doped Bi2 Sr2 Ca0.92 Y0.08 Cu2 O8+δ

AU - Lee, W. S.

AU - Meevasana, W.

AU - Johnston, S.

AU - Lu, D. H.

AU - Vishik, I. M.

AU - Moore, R. G.

AU - Eisaki, H.

AU - Kaneko, N.

AU - Devereaux, T. P.

AU - Shen, Z. X.

PY - 2008/4/11

Y1 - 2008/4/11

N2 - The temperature dependent evolution of the renormalization effect in optimally doped Bi2 Sr2 Ca0.92 Y0.08 Cu2 O8+δ along the nodal direction has been studied via angle-resolved photoemission spectroscopy. Fine structure is observed in the real part of the self-energy (Re Σ), including a subkink and maximum, suggesting that electrons couple to a spectrum of bosonic modes, instead of just one mode. Upon cooling through the superconducting phase transition, the fine structures of the extracted Re Σ exhibit a two-processes evolution demonstrating an interplay between kink renormalization and superconductivity. We show that this two-process evolution can be qualitatively explained by a simple Holstein model in which a spectrum of bosonic modes is considered.

AB - The temperature dependent evolution of the renormalization effect in optimally doped Bi2 Sr2 Ca0.92 Y0.08 Cu2 O8+δ along the nodal direction has been studied via angle-resolved photoemission spectroscopy. Fine structure is observed in the real part of the self-energy (Re Σ), including a subkink and maximum, suggesting that electrons couple to a spectrum of bosonic modes, instead of just one mode. Upon cooling through the superconducting phase transition, the fine structures of the extracted Re Σ exhibit a two-processes evolution demonstrating an interplay between kink renormalization and superconductivity. We show that this two-process evolution can be qualitatively explained by a simple Holstein model in which a spectrum of bosonic modes is considered.

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DO - 10.1103/PhysRevB.77.140504

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SN - 1098-0121

VL - 77

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 14

M1 - 140504

ER -

Superconductivity-induced self-energy evolution of the nodal electron of optimally doped Bi2 Sr2 Ca0.92 Y0.08 Cu2 O8+δ

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