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Title: Direct observation of self-energy signatures of the resonant collective mode in Bi 2 Sr 2 CaCu 2 O 8 + δ

Abstract

Here, we use high-resolution angle-resolved photoemission spectroscopy to study the resonant, collective excitation mode in the superconducting state of Bi2212. By collecting very high-quality data we found noteworthy features in the self-energy in the antinodal region, where the interaction of electrons with the mode is the strongest. This interaction leads to a pronounced peak in the scattering rate and we demonstrate that this feature is directly responsible for the well-known peak-dip-hump structure in cuprates. By studying how the weight of this peak changes with temperature we unequivocally demonstrate that interaction of electrons with the resonant mode in cuprates vanishes at T c and is very much localized in the momentum space close to the antinode. These findings present a consistent picture of line shape and self-energy signatures of the electron-boson coupling in cuprates and resolve long-standing controversy surrounding this issue. The momentum dependence of the strength of electron-mode interaction enables development of quantitative theory of this phenomenon in cuprates.

Authors:
 [1];  [1];  [2]
  1. Ames Lab. and Iowa State Univ., Ames, IA (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1357784
Alternate Identifier(s):
OSTI ID: 1354754; OSTI ID: 1412706
Report Number(s):
IS-J-9330; BNL-114499-2017-JA
Journal ID: ISSN 2469-9950; PRBMDO; TRN: US1702615
Grant/Contract Number:  
AC02-07CH11358; SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 95; Journal Issue: 17; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Mou, Daixiang, Kaminski, Adam, and Gu, Genda. Direct observation of self-energy signatures of the resonant collective mode in Bi2Sr2CaCu2O8+δ. United States: N. p., 2017. Web. doi:10.1103/PhysRevB.95.174501.
Mou, Daixiang, Kaminski, Adam, & Gu, Genda. Direct observation of self-energy signatures of the resonant collective mode in Bi2Sr2CaCu2O8+δ. United States. doi:10.1103/PhysRevB.95.174501.
Mou, Daixiang, Kaminski, Adam, and Gu, Genda. Mon . "Direct observation of self-energy signatures of the resonant collective mode in Bi2Sr2CaCu2O8+δ". United States. doi:10.1103/PhysRevB.95.174501. https://www.osti.gov/servlets/purl/1357784.
@article{osti_1357784,
title = {Direct observation of self-energy signatures of the resonant collective mode in Bi2Sr2CaCu2O8+δ},
author = {Mou, Daixiang and Kaminski, Adam and Gu, Genda},
abstractNote = {Here, we use high-resolution angle-resolved photoemission spectroscopy to study the resonant, collective excitation mode in the superconducting state of Bi2212. By collecting very high-quality data we found noteworthy features in the self-energy in the antinodal region, where the interaction of electrons with the mode is the strongest. This interaction leads to a pronounced peak in the scattering rate and we demonstrate that this feature is directly responsible for the well-known peak-dip-hump structure in cuprates. By studying how the weight of this peak changes with temperature we unequivocally demonstrate that interaction of electrons with the resonant mode in cuprates vanishes at Tc and is very much localized in the momentum space close to the antinode. These findings present a consistent picture of line shape and self-energy signatures of the electron-boson coupling in cuprates and resolve long-standing controversy surrounding this issue. The momentum dependence of the strength of electron-mode interaction enables development of quantitative theory of this phenomenon in cuprates.},
doi = {10.1103/PhysRevB.95.174501},
journal = {Physical Review B},
number = 17,
volume = 95,
place = {United States},
year = {2017},
month = {5}
}

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