Zobrazeno 1 - 10
of 28
pro vyhledávání: '"K. N. Altmann"'
Publikováno v:
Journal of Electron Spectroscopy and Related Phenomena. 126:89-99
Arrays of atomic wires can now be synthesized by self-assembly at stepped surfaces. They provide opportunities for exploring electrons in one dimension and to test predictions of exotic properties, such as spin charge separation in a Luttinger liquid
Publikováno v:
Surface Science. 512:269-280
High-quality vicinal Si(1 1 1) surfaces are used as templates to create single domains of the Si(1 1 1)3 � 1-Ca reconstruction which exhibit atomic chains parallel to Si steps. Scanning tunneling microscope images support the formation of honeycomb
Autor:
Roland Bennewitz, K. N. Altmann, J. L. McChesney, F. J. Himpsel, J.-L. Lin, A. Kirakosian, J. N. Crain
Publikováno v:
Journal of Physics: Condensed Matter. 13:11097-11113
One-dimensional electron systems can now be synthesized at stepped surfaces by self-assembly of atomic and molecular chains. A wide variety of adsorbate and substrate combinations provides opportunities for systematically tailoring electronic propert
Autor:
José Ortega, F. J. Himpsel, Enrique G. Michel, K. N. Altmann, Aitor Mugarza, Arantzazu Mascaraque
Publikováno v:
Surface Science. :464-469
The photoemission cross section of quantum well states in thin Cu(1 0 0) films on Co(1 0 0) has been analyzed in normal emission as a function of photon energy. Assuming conservation of the perpendicular wave vector k ⊥ , the cross section maxima c
Publikováno v:
Physical Review B. 61:R9233-R9236
The orbital character, orientation, and magnetic polarization of the $\mathrm{O}\ensuremath{-}2p$ unoccupied states near the Fermi level ${(E}_{F})$ in ${\mathrm{CrO}}_{2}$ was determined using polarization-dependent x-ray absorption spectroscopy and
Publikováno v:
Journal of Magnetism and Magnetic Materials. 200:456-469
The electronic states responsible for oscillatory magnetic coupling, giant magnetoresistance (GMR), and spin-polarized tunneling are explored. They occupy well-defined locations in ( E, k ) space. Their energy E has to be within a few kT of the Fermi
Publikováno v:
Surface Science Spectra. 6:255-260
High resolution, angular-resolved photoemission is used in a comparison of the energy bands of permalloy (Ni0.8Fe0.2) and single crystal Ni. The nickel was cleaned with a combination of Ar-ion bombardment and annealing. The permalloy was grown epitax
Autor:
W. L. O’Brien, Arantzazu Mascaraque, P. Segovia, F. J. Himpsel, A Naermann, K. N. Altmann, José Ortega, Dong Ju Seo, Enrique G. Michel
Publikováno v:
Journal of Electron Spectroscopy and Related Phenomena. :367-370
Highly-quality Cu/Co/Cu(100) quantum wells are grown in a newly-constructed growth chamber that contains RHEED, LEED, SMOKE, MBE, and sputter deposition facilities. The low defect density of the fcc Co(100) layers is evidenced by a record low coerciv
Autor:
K. N. Altmann, R. Reininger
Publikováno v:
The Journal of Chemical Physics. 107:1759-1764
The ionization potential distribution of (CH3)2S doped in fluid krypton and xenon has been determined by means of field ionization in wide density ranges. These distributions are simulated by convoluting the field spectrum of pure (CH3)2S with the ca
Publikováno v:
Chemical Physics Letters. 261:597-600
The effect of large electric fields on the photoconductivity spectra of liquid xenon is reported. The photoconductivity threshold shifts to lower photon energies with increasing applied electric field. From its magnitude and functional dependence, it