Anisotropy of the electronic structure of low-dimensional Sr(Ca)CuO2 single crystals studied by scanning photoelectron spectromicroscopy
(2002) In Journal of Electron Spectroscopy and Related Phenomena 122(3). p.203-208- Abstract
- The energy band structure of superconducting (T-c(onset) = 80 K), low-dimensional Sr(Ca)CuO2 single crystals was studied by photoelectron spectromicroscopy. The sample consists of double parallel Cu-O chains, and spectra show a strong anisotropy for electron momenta k parallel and perpendicular to the chain direction q. Spectra were collected with two experimental setups: kparallel toq (Aperpendicular toq) and kperpendicular toq (Aparallel toq), where A is the electric field vector of the incident photon beam. By imaging the surface on the micrometer scale we find significant variations in the valence band intensity in the vicinity of about 2 eV below the Fermi level for kparallel toq. For this geometry, Aperpendicular toq and the spectra... (More)
- The energy band structure of superconducting (T-c(onset) = 80 K), low-dimensional Sr(Ca)CuO2 single crystals was studied by photoelectron spectromicroscopy. The sample consists of double parallel Cu-O chains, and spectra show a strong anisotropy for electron momenta k parallel and perpendicular to the chain direction q. Spectra were collected with two experimental setups: kparallel toq (Aperpendicular toq) and kperpendicular toq (Aparallel toq), where A is the electric field vector of the incident photon beam. By imaging the surface on the micrometer scale we find significant variations in the valence band intensity in the vicinity of about 2 eV below the Fermi level for kparallel toq. For this geometry, Aperpendicular toq and the spectra are very sensitive to beam damage. This effect can be related to the breaking of weak inter-chain bonds with the high flux density (similar to10(18) photons s(-1) cm(-2)) beam focused on the sample surface. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/342548
- author
- Zakharov, Alexei LU ; Matsuura, AY ; Lindau, Ingolf LU and Leonyuk, L
- organization
- publishing date
- 2002
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- photoelectron, one-dimensional superconductors, Sr(Ca)CuO2, spectromicroscopy
- in
- Journal of Electron Spectroscopy and Related Phenomena
- volume
- 122
- issue
- 3
- pages
- 203 - 208
- publisher
- Elsevier
- external identifiers
-
- wos:000174194900002
- scopus:0036498323
- ISSN
- 0368-2048
- DOI
- 10.1016/S0368-2048(01)00349-8
- language
- English
- LU publication?
- yes
- id
- e69d415b-4f1e-48b6-8135-b345d38d26c2 (old id 342548)
- date added to LUP
- 2016-04-01 16:35:50
- date last changed
- 2022-02-12 23:12:50
@article{e69d415b-4f1e-48b6-8135-b345d38d26c2, abstract = {{The energy band structure of superconducting (T-c(onset) = 80 K), low-dimensional Sr(Ca)CuO2 single crystals was studied by photoelectron spectromicroscopy. The sample consists of double parallel Cu-O chains, and spectra show a strong anisotropy for electron momenta k parallel and perpendicular to the chain direction q. Spectra were collected with two experimental setups: kparallel toq (Aperpendicular toq) and kperpendicular toq (Aparallel toq), where A is the electric field vector of the incident photon beam. By imaging the surface on the micrometer scale we find significant variations in the valence band intensity in the vicinity of about 2 eV below the Fermi level for kparallel toq. For this geometry, Aperpendicular toq and the spectra are very sensitive to beam damage. This effect can be related to the breaking of weak inter-chain bonds with the high flux density (similar to10(18) photons s(-1) cm(-2)) beam focused on the sample surface.}}, author = {{Zakharov, Alexei and Matsuura, AY and Lindau, Ingolf and Leonyuk, L}}, issn = {{0368-2048}}, keywords = {{photoelectron; one-dimensional superconductors; Sr(Ca)CuO2; spectromicroscopy}}, language = {{eng}}, number = {{3}}, pages = {{203--208}}, publisher = {{Elsevier}}, series = {{Journal of Electron Spectroscopy and Related Phenomena}}, title = {{Anisotropy of the electronic structure of low-dimensional Sr(Ca)CuO2 single crystals studied by scanning photoelectron spectromicroscopy}}, url = {{http://dx.doi.org/10.1016/S0368-2048(01)00349-8}}, doi = {{10.1016/S0368-2048(01)00349-8}}, volume = {{122}}, year = {{2002}}, }