The exactly focusing spherical grating monochromator for undulator radiation at BESSY

Peatman, W.C.B.; Bahrdt, J.; Eggenstein, F.; Reichardt, G.; Senf, F.

doi:10.1063/1.1145558

Cited by 32 publications

(16 citation statements)

References 17 publications

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“…All spectra were recorded for a number of cleavages. Monochromatized synchrotron radiation with an energy of 35 eV from the crossed-undulator beamline U2-FSGM, 10 at the BESSY electron storage ring facility in Berlin was used as the photon source. The angular resolution of the electron energy analyzer, which is situated at an angle of 60°with respect to the incoming synchrotron radiation, was set to Ϯ1°͑corresponding to a k resolution of 0.16 /a) and the overall energy resolution of the system was chosen to be 160 meV.…”

Section: Methodsmentioning

confidence: 99%

Electronic structure of theCu3O4plane of
Schmelz
¹
,
Golden
²
,
Haffner
³

et al. 1998
Phys. Rev. B
Self Cite
7
2
4
1
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General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. We present a detailed joint experimental and theoretical investigation of the valence band electronic structure of single crystals of the model cuprate Ba 2 Cu 3 O 4 Cl 2 . This oxychloride system possesses a Cu 3 O 4 plane which can be regarded as a superposition of two subsystems: a Cu A O 2 cuprate plane and an extra Cu B site, and thus represents an ideal trial system for assessing the impact of deviations from the CuO 2 plane stoichiometry upon the electronic structure in cuprate materials. From polarization-dependent, k-resolved photoemission measurements the dispersion relations and symmetry of a number of the observed valence band features are determined and compared with the results of band structure calculations carried out within the LSDAϩU formalism, which include a detailed analysis of the character and symmetry of the individual bands. Upon electron removal, the extra copper site makes its presence felt via the formation of a second Zhang-Rice singlet located on the Cu B subsystem, in addition to that originating from the Cu A O 2 subsystem. The main valence band edge at ϳ2 eV binding energy is shown to be mainly due to bands involving combinations of O 2p x,y orbitals, some of which exhibit essentially pure O 2 p character. These low-lying oxygen bands are different in origin from the nonmixing O 2 p states observed, for example, at ( , ) in Sr 2 CuO 2 Cl 2 , as the orbital combination responsible for the latter is involved in Ba 2 Cu 3 O 4 Cl 2 in the formation of the Zhang-Rice singlet state on the Cu B sublattice. ͓S0163-1829͑98͒00717-6͔

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Section: Methodsmentioning

confidence: 99%

Electronic structure of theCu3O4plane of
Schmelz
¹
,
Golden
²
,
Haffner
³

et al. 1998
Phys. Rev. B
Self Cite
7
2
4
1
View full text Add to dashboard Cite

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“…The idea has been further developed to do without any elliptical mirror [7]. This idea is also applied for the focusing spherical grating monochromator (FSGM) [8]. A high resolution exceeding 10000 is achieved using plane and spherical optical elements only.…”

Section: Monochromatorsmentioning

confidence: 99%

Some Aspects of VUV Beam Line Design

Gaupp

Peatman

1997

Acta Phys. Pol. A

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“…the BESSY TGM-1 to -4 and TGM-7, but the resolving power is not high enough for our purpose. In principle, the modi®ed SX-700 (Mythen et al, 1992) or FSGM (Peatman et al, 1995) type monochromators can satisfy our requirements, but the monochromator mechanism is not easy to construct. The Dragon spherical-grating monochromator (SGM) (Chen, 1987) is one of the most successful monochromators of the past ten years.…”

Section: Introductionmentioning

confidence: 99%

Optical design of the NSRL undulator beamline

Zhang¹,

Sheng²,

Zhang³

et al. 1998

J Synchrotron Radiat

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The optical design of the NSRL undulator beamline is presented. The NSRL undulator has 29 periods of 9.2 cm that produce a photon energy of 7.7±124 eV with the fundamental and third harmonics at a ring energy of 800 MeV. The beamline consists of a typical Kirkpatrick±Baez prefocusing mirror system, a modi®ed spherical-grating monochromator (SGM) and a refocusing toroidal mirror. The monochromator has two including angles of 148 and 157 with two plane mirrors inserted into the entrance arm in order to cover the wide energy range with high grating diffraction ef®ciency. Calculation shows that the resolving power of the monochromator can be greater than 5000 with the slits fully opened and 20 000 with a 20 mm opening of the slits. The spot at the sample is about 1.5 (H) mm Â 0.5 (V) mm.

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The exactly focusing spherical grating monochromator for undulator radiation at BESSY

Abstract: Articles you may be interested inAn undulator-based spherical grating monochromator beamline for low energy electron-molecule scattering experiments Rev. Sci. Instrum. 73, 4157 (2002);

Cited by 32 publications

References 17 publications

Electronic structure of theCu3O4plane of
Schmelz
¹
,
Golden
²
,
Haffner
³

et al. 1998
Phys. Rev. B
Self Cite
7
2
4
1
View full text Add to dashboard Cite

Electronic structure of theCu3O4plane of
Schmelz
¹
,
Golden
²
,
Haffner
³

et al. 1998
Phys. Rev. B
Self Cite
7
2
4
1
View full text Add to dashboard Cite

Some Aspects of VUV Beam Line Design

Optical design of the NSRL undulator beamline

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The exactly focusing spherical grating monochromator for undulator radiation at BESSY

Abstract: Articles you may be interested inAn undulator-based spherical grating monochromator beamline for low energy electron-molecule scattering experiments Rev. Sci. Instrum. 73, 4157 (2002);

Cited by 32 publications

References 17 publications

Electronic structure of theCu3O4plane ofSchmelz1, Golden2, Haffner3 et al. 1998Phys. Rev. BSelf Cite7241View full textAdd to dashboardCite

Electronic structure of theCu3O4plane ofSchmelz1, Golden2, Haffner3 et al. 1998Phys. Rev. BSelf Cite7241View full textAdd to dashboardCite

Some Aspects of VUV Beam Line Design

Optical design of the NSRL undulator beamline

Contact Info

Product

Resources

About

Electronic structure of theCu3O4plane of
Schmelz
¹
,
Golden
²
,
Haffner
³

et al. 1998
Phys. Rev. B
Self Cite
7
2
4
1
View full text Add to dashboard Cite

Electronic structure of theCu3O4plane of
Schmelz
¹
,
Golden
²
,
Haffner
³

et al. 1998
Phys. Rev. B
Self Cite
7
2
4
1
View full text Add to dashboard Cite