Electronic structure of silver and copper ultrathin films on V(100): Quantum-well states

1996 ◽  
Vol 54 (16) ◽  
pp. 11786-11795 ◽  
Author(s):  
T. Valla ◽  
P. Pervan ◽  
M. Milun ◽  
A. B. Hayden ◽  
D. P. Woodruff
Keyword(s):  
Electronic Structure ◽  
Quantum Well ◽  
Ultrathin Films ◽  
Quantum Well States

Angle Resolved Photoemission from Ultrathin Films of Cu/Ni(001)

1996 ◽  
Vol 427 ◽  
Author(s):  
K. Subramanian ◽  
G. J. Mankey ◽  
R. L. Stockbauer ◽  
R. L. Kurtz
Keyword(s):  
Quantum Well ◽  
Fermi Level ◽  
Ultrathin Films ◽  
Angular Distributions ◽  
Recent Past ◽  
Quantum Well States ◽  
Photoelectron Angular Distributions ◽  
Zone Edge

AbstractWe present a study of the quantum well states observed in Cu/Ni(001). Several reports in the recent past have shown that these states, which are derived from the bulk, disperse through the Fermi level at a thickness of about 6 ML. Using angle-resolved photoemission, we have imaged the photoelectron angular distributions from several thicknesses of Cu/Ni(001). We observe that these states have s,p like symmetry and are located near the zone edge.

Quantum well States in Fe (100) Ultrathin Films Observed by Magneto-Optical Effect

1993 ◽  
Vol 313 ◽  
Author(s):  
Yoshishige Suzuki ◽  
Toshikazu Katayama
Keyword(s):  
Quantum Well ◽  
Ultrathin Films ◽  
Oscillation Period ◽  
Interlayer Thickness ◽  
Kerr Rotation ◽  
Magnetic Layers ◽  
Ultrathin Layers ◽  
Spin Polarized ◽  
Magneto Optical Effect ◽  
Quantum Well States

ABSTRACTWe report on the Magneto-optical Kerr rotation (<φ>K) spectra of ultrathin Fe films on Au or Ag (100) substrates and the φK oscillation due to interlayer thickness in Fe/Au/Fe sandwich films. In 3.5–4.5 eV, a new φK peak appears in the bcc-Fe (100) ultrathin films on the fcc-Au (100) surface and it shifts towards the higher energy side with increasing Fe layer thickness. The absolute value of eXy for 3Å (2ML) thick Fe layers is twice as large as that of bulk Fe at 3.7 eV. The thickness dependence of the transition energy of this new peak in the spectra is well explained by the concept of quantum well states in the Fe ultrathin layers, attributing the new transition to a transition from the majority spin Δ5 band ({px±i py), {dxz±i dyZ}; M=±l) to the Δ1 quantum well states (s, pz, dz2; M=0). The new peak is also observed in the Fe/Au (100) artificial superlattices. Using the εxy obtained experimentally for the Fe ultrathin films and the εxy of literature, we can reproduce the experimental φK spectra of the artificial superlattices by optical calculation. On the other hand, we cannot observe the same behavior for the ultrathin Fe films grown on a fcc-Ag (100) surface and covered by a Au (100) ultrathin film, although the εXy of Fe is different from that of the bulk and shows some structures in 2–3 eV. These structures around 2.5 eV are thought to be due to polarized Au atoms adjacent to an Fe layer.An oscillation of φK as a function of interlayer thickness, d, was observed in photon energy region between about 2.5 and 3.8 eV for the Fe (6Å) /Au (dÅ) /Fe (6A) sandwiched film. The oscillation period was about 10Å (5ML) of Au. The oscillation is thought to be closely related with a formation of spin polarized quantum well states of Δ1 band in Au layers sandwiched by magnetic layers.

Electronic structure of quantum-well states revealed under high pressures

1988 ◽  
Vol 4 (4-5) ◽  
pp. 525-535 ◽  
Author(s):  
D.J. Wolford ◽  
T.F. Kuech ◽  
T.W. Steiner ◽  
J.A. Bradley ◽  
M.A. Gell ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Quantum Well ◽  
High Pressures ◽  
Quantum Well States

scholarly journals Theory for the nonlinear optical response of quantum-well states in ultrathin films

1998 ◽  
Vol 57 (12) ◽  
pp. 7377-7384 ◽  
Author(s):  
T. A. Luce ◽  
W. Hübner ◽  
A. Kirilyuk ◽  
Th. Rasing ◽  
K. H. Bennemann
Keyword(s):  
Quantum Well ◽  
Ultrathin Films ◽  
Nonlinear Optical ◽  
Optical Response ◽  
Nonlinear Optical Response ◽  
Quantum Well States

Spin Polarized Photoemission Studies of Quantum well States in Thin Films

1993 ◽  
Vol 313 ◽  
Author(s):  
P.D. Johnson ◽  
N.B. Brookes ◽  
Y. Chang ◽  
K. Garrison
Keyword(s):  
Thin Films ◽  
Electronic Structure ◽  
Quantum Well ◽  
Noble Metals ◽  
Tight Binding ◽  
Binding Energies ◽  
Cu Films ◽  
Minority Spin ◽  
Spin Polarized ◽  
Quantum Well States

ABSTRACTSpin polarized photoemission is used to study the electronic structure of noble metals deposited on ferromagnetic substrates. Studies of Ag deposited on an Fe (001) substrate reveal a series of minority spin interface or quantum well states with binding energies dependent on the thickness of the silver. Similar behavior is observed for Cu films deposited on a fee Co (001) substrate. Tight-binding Modeling reproduces many of the observations and shows that hybridization of the sp-bands with the noble metal d-bands cannot be ignored.

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