D. Dessau - Academia.edu (original) (raw)

Papers by D. Dessau

Research paper thumbnail of Evolution of the electronic structure with doping in Bi2Sr2CaCu2O8+δ - Angle resolved photoemission results

Journal of Electron Spectroscopy and Related Phenomena, 1996

ABSTRACT High resolution angle-resolved photoemission measurements have been carried out on (La2-... more ABSTRACT High resolution angle-resolved photoemission measurements have been carried out on (La2-xSrx)CuO4 (LSCO) over the entire doping range (x=0˜0.3). Systematic evolution of the energy band, Fermi surface, and many-body effect with doping will be discussed.

Research paper thumbnail of Magnetic reconstruction of the Gd(0001) surface

Physical Review Letters, 1993

Magnetic reconstruction of the Gd(0001) surface. H. Tang, D. Weller, TG Walker, JC Scott, C. Chap... more Magnetic reconstruction of the Gd(0001) surface. H. Tang, D. Weller, TG Walker, JC Scott, C. Chappert, H. Hopster, AW Pang, DS Dessau, and DP Pappas Department of Physics and Institute for Surface and Interface Science ...

Research paper thumbnail of Photoemission study of monoclinic BaBiO3

Physical review. B, Condensed matter, 1989

We present the results of photoemission studies of ``valence-disordered'' monocli... more We present the results of photoemission studies of ``valence-disordered'' monoclinic BaBiO3 in the photon energy range 15-120 eV. The line shapes of the valence-band photoemission spectra and the Ba contributions to the valence band are similar to the line shapes of the total density of states and Ba partial density of states, respectively. The Bi 5d core levels show only

Research paper thumbnail of Investigating the Effects of Doping Inhomogeneity on the ARPES Spectrum of Bi $ _ {2} $ Sr $ _ {2} $ CaCu $ _ {2} $ O $ _ {8} $

Research paper thumbnail of Surface, Interface, and Bulk Properties of High Tc Superconductors

Research paper thumbnail of Measurement of an Anisotropic Energy Gap in Single Plane Bi2Sr2-xLaxCuO6+δ

Physical Review Letters, 1997

We report angle-resolved photoemission spectra both above and below Tc in the single-plane cuprat... more We report angle-resolved photoemission spectra both above and below Tc in the single-plane cuprate superconductor Bi2Sr2−xLaxCuO 6+δ . The superconducting state measurements show a highly anisotropic excitation gap with a maximum magnitude smaller than that of the bilayer compound Bi2Sr2CaCu2O8 by a factor of 3. For a range of doping, the gap persists well above Tc, behavior previously associated with underdoped bilayer cuprates. The anisotropy and magnitude of the normal-state gap are very similar to the superconducting state gap, indicating that the two gaps may have a common origin in a pairing interaction.

Research paper thumbnail of k-Dependent Electronic Structure, a Large “Ghost” Fermi Surface, and a Pseudogap in a Layered Magnetoresistive Oxide

Physical Review Letters, 1998

... This is why we call the locus a "ghost" Fermi surface. ... C. 8, L4... more ... This is why we call the locus a "ghost" Fermi surface. ... C. 8, L49 (1975). [16] See, for example, the discussion by GD Mahan, Many Particle Physics (Plenum Press, New York, 1990), Chap. 4.3.C. [17] See GA Sawatzky, Nature (London) 342, 480 (1989). [18] D. Louca et al., Phys. ...

Research paper thumbnail of Magnetic reconstruction of the Gd(0001) surface

Physical Review Letters, 1993

Magnetic reconstruction of the Gd(0001) surface. H. Tang, D. Weller, TG Walker, JC Scott, C. Chap... more Magnetic reconstruction of the Gd(0001) surface. H. Tang, D. Weller, TG Walker, JC Scott, C. Chappert, H. Hopster, AW Pang, DS Dessau, and DP Pappas Department of Physics and Institute for Surface and Interface Science ...

Research paper thumbnail of Isotopic Fingerprint of Electron-Phonon Coupling in High-Tc Cuprates

Physical Review Letters, 2008

Angle-resolved photoemission spectroscopy with low-energy tunable photons along the nodal directi... more Angle-resolved photoemission spectroscopy with low-energy tunable photons along the nodal direction of oxygen isotope substituted Bi2Sr2CaCu2O 8+δ reveals a distinct oxygen isotope shift near the electron-boson coupling "kink" in the electronic dispersion. The magnitude (a few meV) and direction of the kink shift are as expected due to the measured isotopic shift of phonon frequency, which are also in agreement with theoretical expectations. This demonstrates the participation of the phonons as dominant players, as well as pinpointing the most relevant of the phonon branches.

Research paper thumbnail of Unconventional Electronic Structure Evolution with Hole Doping in Bi2Sr2CaCu2O8+δ: Angle-Resolved Photoemission Results

Physical Review Letters, 1996

We report angle-resolved photoemission results on Bi 2 Sr 2 Ca 1-x Dy x Cu 2 O 8+delta and oxygen... more We report angle-resolved photoemission results on Bi 2 Sr 2 Ca 1-x Dy x Cu 2 O 8+delta and oxygen depleted Bi 2 Sr 2 CaCu 2 O 8+delta investigating the electronic structure changes above T c in materials with hole doping levels ranging from insulating to slightly overdoped. ...

Research paper thumbnail of Angle-resolved photoemission study of Bi2Sr2Ca1−xYxCu2O8(x=0.0, 0.2, 0.4, 0.6) single crystals

Physica C: Superconductivity, 1991

... Auteur(s) / Author(s). WELLS BO ; SHEN Z.-X. ; DESSAU DS ; SPICER WE ; OLSON CG ; MITZI DB ; ... more ... Auteur(s) / Author(s). WELLS BO ; SHEN Z.-X. ; DESSAU DS ; SPICER WE ; OLSON CG ; MITZI DB ; KAPITULNIK A. ; LIST RS ; ARKO A. ; Affiliation(s) du ou des auteurs / Author(s) Affiliation(s). ... Low temperature. ; Temperature. ; Single crystal. ; Metallicity. ; Angular variation. ; ...

Research paper thumbnail of The electronic structure of Bi2.0Sr1.8La0.3Ca0.8Cu2.1O8+δ superconductors studied using ultraviolet and X-ray photoelectron spectroscopy

Physica C: Superconductivity, 1989

Photoemission measurements on single crystals of La-doped 2212 (Bi2.oSrl.aLao.aCao.aCu2.1Os+a) su... more Photoemission measurements on single crystals of La-doped 2212 (Bi2.oSrl.aLao.aCao.aCu2.1Os+a) superconductors were carried out utilizing both synchrotron and A1 K~ ( 1486.6 eV) radiation. A quantitative analysis of the photoemission data in comparison with similar data for the undoped 2212 material indicates that the La atoms preferentially occupy the Sr sites in the Sr-O layer next to the Bi-O plane. Evidence of alteration of the electronic environment of the Bi atoms is found in the Bi 5d core level spectra which show a shoulder at ~ 1.2 eV higher binding energy, presumably due to the partial substitution of trivalent La ions (La 3÷ ) for divalent Sr ions (St 2+ ). As for the undoped 2212 material, the photoemission spectra reveal a clear Fermi level cut-off at room temperature, single component O ls core level emission, and a Cu 2p satellite to main line intensity ratio of 0.4.

Research paper thumbnail of Space charge effect and mirror charge effect in photoemission spectroscopy

Journal of Electron Spectroscopy and Related Phenomena, 2005

We report the observation and systematic investigation of the space charge effect and mirror char... more We report the observation and systematic investigation of the space charge effect and mirror charge effect in photoemission spectroscopy. When pulsed light is incident on a sample, the photoemitted electrons experience energy redistribution after escaping from the surface because of the Coulomb interaction between them (space charge effect) and between photoemitted electrons and the distribution of mirror charges in the sample (mirror charge effect). These combined Coulomb interaction effects give rise to an energy shift and a broadening which can be on the order of 10 meV for a typical third-generation synchrotron light source. This value is comparable to many fundamental physical parameters actively studied by photoemission spectroscopy and should be taken seriously in interpreting photoemission data and in designing next generation experiments.

Research paper thumbnail of Spin-polarized photoemission study of epitaxial Gd(0001) films on W(110)

Journal of Applied Physics, 1993

ABSTRACT

Research paper thumbnail of Evolution of the electronic structure with doping in Bi2Sr2CaCu2O8+δ - Angle resolved photoemission results

Journal of Electron Spectroscopy and Related Phenomena, 1996

ABSTRACT High resolution angle-resolved photoemission measurements have been carried out on (La2-... more ABSTRACT High resolution angle-resolved photoemission measurements have been carried out on (La2-xSrx)CuO4 (LSCO) over the entire doping range (x=0˜0.3). Systematic evolution of the energy band, Fermi surface, and many-body effect with doping will be discussed.

Research paper thumbnail of Magnetic reconstruction of the Gd(0001) surface

Physical Review Letters, 1993

Magnetic reconstruction of the Gd(0001) surface. H. Tang, D. Weller, TG Walker, JC Scott, C. Chap... more Magnetic reconstruction of the Gd(0001) surface. H. Tang, D. Weller, TG Walker, JC Scott, C. Chappert, H. Hopster, AW Pang, DS Dessau, and DP Pappas Department of Physics and Institute for Surface and Interface Science ...

Research paper thumbnail of Photoemission study of monoclinic BaBiO3

Physical review. B, Condensed matter, 1989

We present the results of photoemission studies of ``valence-disordered'' monocli... more We present the results of photoemission studies of ``valence-disordered'' monoclinic BaBiO3 in the photon energy range 15-120 eV. The line shapes of the valence-band photoemission spectra and the Ba contributions to the valence band are similar to the line shapes of the total density of states and Ba partial density of states, respectively. The Bi 5d core levels show only

Research paper thumbnail of Investigating the Effects of Doping Inhomogeneity on the ARPES Spectrum of Bi $ _ {2} $ Sr $ _ {2} $ CaCu $ _ {2} $ O $ _ {8} $

Research paper thumbnail of Surface, Interface, and Bulk Properties of High Tc Superconductors

Research paper thumbnail of Measurement of an Anisotropic Energy Gap in Single Plane Bi2Sr2-xLaxCuO6+δ

Physical Review Letters, 1997

We report angle-resolved photoemission spectra both above and below Tc in the single-plane cuprat... more We report angle-resolved photoemission spectra both above and below Tc in the single-plane cuprate superconductor Bi2Sr2−xLaxCuO 6+δ . The superconducting state measurements show a highly anisotropic excitation gap with a maximum magnitude smaller than that of the bilayer compound Bi2Sr2CaCu2O8 by a factor of 3. For a range of doping, the gap persists well above Tc, behavior previously associated with underdoped bilayer cuprates. The anisotropy and magnitude of the normal-state gap are very similar to the superconducting state gap, indicating that the two gaps may have a common origin in a pairing interaction.

Research paper thumbnail of k-Dependent Electronic Structure, a Large “Ghost” Fermi Surface, and a Pseudogap in a Layered Magnetoresistive Oxide

Physical Review Letters, 1998

... This is why we call the locus a "ghost" Fermi surface. ... C. 8, L4... more ... This is why we call the locus a "ghost" Fermi surface. ... C. 8, L49 (1975). [16] See, for example, the discussion by GD Mahan, Many Particle Physics (Plenum Press, New York, 1990), Chap. 4.3.C. [17] See GA Sawatzky, Nature (London) 342, 480 (1989). [18] D. Louca et al., Phys. ...

Research paper thumbnail of Magnetic reconstruction of the Gd(0001) surface

Physical Review Letters, 1993

Magnetic reconstruction of the Gd(0001) surface. H. Tang, D. Weller, TG Walker, JC Scott, C. Chap... more Magnetic reconstruction of the Gd(0001) surface. H. Tang, D. Weller, TG Walker, JC Scott, C. Chappert, H. Hopster, AW Pang, DS Dessau, and DP Pappas Department of Physics and Institute for Surface and Interface Science ...

Research paper thumbnail of Isotopic Fingerprint of Electron-Phonon Coupling in High-Tc Cuprates

Physical Review Letters, 2008

Angle-resolved photoemission spectroscopy with low-energy tunable photons along the nodal directi... more Angle-resolved photoemission spectroscopy with low-energy tunable photons along the nodal direction of oxygen isotope substituted Bi2Sr2CaCu2O 8+δ reveals a distinct oxygen isotope shift near the electron-boson coupling "kink" in the electronic dispersion. The magnitude (a few meV) and direction of the kink shift are as expected due to the measured isotopic shift of phonon frequency, which are also in agreement with theoretical expectations. This demonstrates the participation of the phonons as dominant players, as well as pinpointing the most relevant of the phonon branches.

Research paper thumbnail of Unconventional Electronic Structure Evolution with Hole Doping in Bi2Sr2CaCu2O8+δ: Angle-Resolved Photoemission Results

Physical Review Letters, 1996

We report angle-resolved photoemission results on Bi 2 Sr 2 Ca 1-x Dy x Cu 2 O 8+delta and oxygen... more We report angle-resolved photoemission results on Bi 2 Sr 2 Ca 1-x Dy x Cu 2 O 8+delta and oxygen depleted Bi 2 Sr 2 CaCu 2 O 8+delta investigating the electronic structure changes above T c in materials with hole doping levels ranging from insulating to slightly overdoped. ...

Research paper thumbnail of Angle-resolved photoemission study of Bi2Sr2Ca1−xYxCu2O8(x=0.0, 0.2, 0.4, 0.6) single crystals

Physica C: Superconductivity, 1991

... Auteur(s) / Author(s). WELLS BO ; SHEN Z.-X. ; DESSAU DS ; SPICER WE ; OLSON CG ; MITZI DB ; ... more ... Auteur(s) / Author(s). WELLS BO ; SHEN Z.-X. ; DESSAU DS ; SPICER WE ; OLSON CG ; MITZI DB ; KAPITULNIK A. ; LIST RS ; ARKO A. ; Affiliation(s) du ou des auteurs / Author(s) Affiliation(s). ... Low temperature. ; Temperature. ; Single crystal. ; Metallicity. ; Angular variation. ; ...

Research paper thumbnail of The electronic structure of Bi2.0Sr1.8La0.3Ca0.8Cu2.1O8+δ superconductors studied using ultraviolet and X-ray photoelectron spectroscopy

Physica C: Superconductivity, 1989

Photoemission measurements on single crystals of La-doped 2212 (Bi2.oSrl.aLao.aCao.aCu2.1Os+a) su... more Photoemission measurements on single crystals of La-doped 2212 (Bi2.oSrl.aLao.aCao.aCu2.1Os+a) superconductors were carried out utilizing both synchrotron and A1 K~ ( 1486.6 eV) radiation. A quantitative analysis of the photoemission data in comparison with similar data for the undoped 2212 material indicates that the La atoms preferentially occupy the Sr sites in the Sr-O layer next to the Bi-O plane. Evidence of alteration of the electronic environment of the Bi atoms is found in the Bi 5d core level spectra which show a shoulder at ~ 1.2 eV higher binding energy, presumably due to the partial substitution of trivalent La ions (La 3÷ ) for divalent Sr ions (St 2+ ). As for the undoped 2212 material, the photoemission spectra reveal a clear Fermi level cut-off at room temperature, single component O ls core level emission, and a Cu 2p satellite to main line intensity ratio of 0.4.

Research paper thumbnail of Space charge effect and mirror charge effect in photoemission spectroscopy

Journal of Electron Spectroscopy and Related Phenomena, 2005

We report the observation and systematic investigation of the space charge effect and mirror char... more We report the observation and systematic investigation of the space charge effect and mirror charge effect in photoemission spectroscopy. When pulsed light is incident on a sample, the photoemitted electrons experience energy redistribution after escaping from the surface because of the Coulomb interaction between them (space charge effect) and between photoemitted electrons and the distribution of mirror charges in the sample (mirror charge effect). These combined Coulomb interaction effects give rise to an energy shift and a broadening which can be on the order of 10 meV for a typical third-generation synchrotron light source. This value is comparable to many fundamental physical parameters actively studied by photoemission spectroscopy and should be taken seriously in interpreting photoemission data and in designing next generation experiments.

Research paper thumbnail of Spin-polarized photoemission study of epitaxial Gd(0001) films on W(110)

Journal of Applied Physics, 1993

ABSTRACT