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Gromko, A. D.; Fedorov, A. V.; Chuang, Yi‐De; Koralek, Jake; Aiura, Y.; Yamaguchi, Yoichi; Oka, Kunihiko; Ando, Yoichi; Dessau, D. S.

doi:10.1103/physrevb.68.174520

Cited by 176 publications

(222 citation statements)

References 27 publications

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“…The electron self-energy effect along the antinodal direction has been studied for several BSCCO crystals (OD91K, OD71K, and OD58K) 52 . The kink feature in the band dispersion or the peak feature in the electron self-energy along the antinodal direction is much stronger than that along the diagonal direction.…”

Section: Strong Electron-phonon Coupling Features Along the Antinomentioning

confidence: 99%

“…4 shows the boson energy as a function of T c for several overdoped BSCCO. The boson energy from the ARPES data is calculated according to E boson = E kink − ∆ M , where E kink is the kink energy in the band dispersion, which is found to be equal to the peak energy in the electron self-energy 52 . The above relation that is predicted by theory 53 was also used by the authors of Ref.…”

Section: Strong Electron-phonon Coupling Features Along the Antinomentioning

confidence: 99%

“…Significantly away from the antinodal direction, the energies of all the modes are within the band continuum so the kink features for these modes will show up. 52 ) is calculated according to E boson = E kink − ∆M , where E kink is the kink energy in the band dispersion, which is found to be equal to the peak energy in the electron self-energy 52 . One data point (open circle) is from the tunneling data (see Fig.…”

Section: Strong Electron-phonon Coupling Features Along the Antinomentioning

confidence: 99%

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Pairing interactions and pairing mechanism in high-temperature copper oxide superconductors

Zhao

2005

Phys. Rev. B

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The polaron binding energy Ep in undoped parent cuprates has been determined to be about 1.0 eV from the unconventional oxygen-isotope effect on the antiferromagnetic ordering temperature. The deduced value of Ep is in quantitative agreement with that estimated from independent optical data and that estimated theoretically from the measured dielectric constants. The substantial oxygenisotope effect on the in-plane supercarrier mass observed in optimally doped cuprates suggests that polarons are bound into the Cooper pairs. We also identify the phonon modes that are strongly coupled to conduction electrons from the angle-resolved photoemission spectroscopy, tunneling spectra, and optical data. We consistently show that there is a very strong electron-phonon coupling feature at a phonon energy of about 20 meV along the antinodal direction and that this coupling becomes weaker towards the diagonal direction. We further show that high-temperature superconductivity in cuprates is caused by strong electron-phonon coupling, polaronic effect, and significant coupling with 2 eV Cu-O charge transfer fluctuation.

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Section: Strong Electron-phonon Coupling Features Along the Antinomentioning

confidence: 99%

Section: Strong Electron-phonon Coupling Features Along the Antinomentioning

confidence: 99%

Section: Strong Electron-phonon Coupling Features Along the Antinomentioning

confidence: 99%

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Pairing interactions and pairing mechanism in high-temperature copper oxide superconductors

Zhao

2005

Phys. Rev. B

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“…2,3 Angle-resolved photoemission spectroscopy (ARPES) has proven to be a successful technique to study related feedback effects in the electronic spectrum. 4,5,6,7,8 To be directly sensitive to magnetism, ARPES experiment needs to resolve the spins of photoelectrons. Such an attractive opportunity to measure spin, momentum and energy simultaneously and with the same efficiency requires further improvement of the apparatus for "complete" photoemission -high spin resolution today still implies lower energy or/and momentum resolutions.…”

mentioning

confidence: 99%

Circular dichroism and bilayer splitting in the normal state of underdoped(Pb,Bi)2Sr2(
Борисенко
¹
,
Kordyuk
²
,
Legner
³

et al. 2004
Phys. Rev. B

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“…Improvement in the energy resolution from 50 meV to 10 meV has enabled investigation of low-energy excitations, such as the dispersion "kink" and bilayer splitting in the high T c superconductors [1,2]. Five photoemission papers have made it to the "ten most cited physics papers".…”

Section: High Resolving Power Applicationsmentioning

confidence: 99%

The Advanced Light Source Upgrade

Chemla¹

2004

AIP Conference Proceedings

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Abstract. The ALS, a third-generation synchrotron light source at Berkeley Lab, has been operating for almost a decade and is generating forefront science by exploiting the high brightness of a third-generation source in three areas: (1) high resolving power for spectroscopy; (2) high spatial resolution for microscopy and spectromicroscopy; and (3) high coherence for experiments such as speckle. However, the ALS was one of the first third-generation machines to be designed, and accelerator and insertion-device technology have significantly changed since its conception. As a result, its performance will inevitably be outstripped by newer, more advanced sources. To remain competitive and then set a new standard, the performance of the ALS, in particular its brightness, must be enhanced. Substantial improvements in brightness and current have always been feasible in principle, but they incur the penalty of a much reduced lifetime, which is totally unacceptable to our users. Significant brightness improvements can be realized in the core soft x-ray region by going to top-off operation, where injection would be quasi-continuous and the lifetime objections disappear. In top-off mode with higher average current, a reduced vertical emittance and beta function, and small-gap permanentmagnet or superconducting insertion devices, one to two orders of magnitude improvement in brightness can be had in the soft x-ray range. These improvements also extend the high energy range of the undulator radiation beyond the current limit of 2000 eV. Descriptions of the upgrade and the important new science achievable are presented. PUSHING THE SCIENCE LIMITSExploitation of the high brightness of a third-generation synchrotron light source translates into three areas: (1) high resolving power for spectroscopy; (2) high spatial resolution for microscopy and spectromicroscopy; and (3) high coherence for experiments such as speckle. Here we explore the status of each and what would it take to make the next leap. Briefly, the ALS upgrade we propose to go to full-energy injection and higher current and to replace five obsolescent insertion devises with nine state-of-the art insertion devices and four new beamlines to be identified. Moreover, there would be no major disruption to the experimental program of the ALS, since the upgrade could be accomplished in a phased sequence of short (six week) shutdowns. High Resolving Power Applications.A scientific area that has benefited enormously from the availability of high brightness sources is the physics of complex materials studied by photoemission with high energy and high momentum resolution. Improvement in the energy resolution from 50 meV to 10 meV has enabled investigation of low-energy excitations, such as the dispersion "kink" and bilayer splitting in the high T c superconductors [1,2]. Five photoemission papers have made it to the "ten most cited physics papers". Further improvement in resolution down to the meV range will provide even sharper experimental incisiveness for the understandin...

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Mass-renormalized electronic excitations at(π,0)in the superconducting state ofBi2

Cited by 176 publications

References 27 publications

Pairing interactions and pairing mechanism in high-temperature copper oxide superconductors

Pairing interactions and pairing mechanism in high-temperature copper oxide superconductors

Circular dichroism and bilayer splitting in the normal state of underdoped(Pb,Bi)2Sr2(
Борисенко
¹
,
Kordyuk
²
,
Legner
³

et al. 2004
Phys. Rev. B

The Advanced Light Source Upgrade

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Mass-renormalized electronic excitations at(π,0)in the superconducting state ofBi2

Cited by 176 publications

References 27 publications

Pairing interactions and pairing mechanism in high-temperature copper oxide superconductors

Pairing interactions and pairing mechanism in high-temperature copper oxide superconductors

Circular dichroism and bilayer splitting in the normal state of underdoped(Pb,Bi)2Sr2(Борисенко1, Kordyuk2, Legner3 et al. 2004Phys. Rev. B

The Advanced Light Source Upgrade

Contact Info

Product

Resources

About

Circular dichroism and bilayer splitting in the normal state of underdoped(Pb,Bi)2Sr2(
Борисенко
¹
,
Kordyuk
²
,
Legner
³

et al. 2004
Phys. Rev. B