Spin Polarized Photoemission from Fe On CU(100)

1991 ◽  
Vol 231 ◽  
Author(s):  
D.P. Pappas ◽  
K.-P. KÄmper ◽  
B.P. Miller ◽  
H. Hopster ◽  
D.E. Fowler ◽  
...  
Keyword(s):  
Low Energy ◽  
Photoemission Spectroscopy ◽  
Universal Curve ◽  
Exchange Splitting ◽  
Attenuation Length ◽  
Angle Resolved Photoemission Spectroscopy ◽  
Minority Spin ◽  
Spin Polarized ◽  
The Difference ◽  
Majority Spin

AbstractThe spin resolved electronic structure of ultra-thin Fe films on Cu(100) was investigated using spin polarized angle resolved photoemission spectroscopy. All exchange splitting of the Fe ∆s band of 2.5 eV is observed for photon energies between 20 and 30 eV. ∆ peak at 6 eV binding energy which has been previously identified as a many-electron resonance was observed only after contamination of the films with oxygen. In addition, the spin dependent attenuation lengths for electrons in Fe were measured at 11, 19, and 40 eV above Ef. The attenuation length for the minority spin electrons was found to be shorter than that of the majority spin electrons. The difference between the two attenuation lengths was shown to increase at low energy. Short attenuation lengths of ≃3 monolayer were measured at II eV. The large increase of the attenuation length at low energy which is expected from the “universal curve” is not observed in Fe.

scholarly journals A tunable low-energy photon source for high-resolution angle-resolved photoemission spectroscopy

2012 ◽  
Vol 83 (11) ◽  
pp. 113103 ◽  
Author(s):  
John W. Harter ◽  
Philip D. C. King ◽  
Eric J. Monkman ◽  
Daniel E. Shai ◽  
Yuefeng Nie ◽  
...  
Keyword(s):  
High Resolution ◽  
Low Energy ◽  
Photoemission Spectroscopy ◽  
Energy Photon ◽  
Angle Resolved Photoemission Spectroscopy ◽  
Photon Source

ARPES study of LSCO and PBCO: Electronic structure of the stripe phase and the 1/4-filled Cu-O chains

2000 ◽  
Vol 14 (29n31) ◽  
pp. 3602-3609
Author(s):  
T. Mizokawa ◽  
A. Ino ◽  
T. Yoshida ◽  
A. Fujimori ◽  
C. Kim ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Spectral Feature ◽  
Spectral Weight ◽  
Charge Ordering ◽  
Photoemission Spectroscopy ◽  
Stripe Phase ◽  
Angle Resolved Photoemission Spectroscopy ◽  
Weight Suppression ◽  
Gap Opening ◽  
The Difference

We have studied the electronic structure of the stripe phase in La 2-x Sr x CuO 4 (LSCO) and the Cu-O chains in PrBa 2 Cu 3 O 7 (Pr123) and PrBa 2 Cu 4 O 8 (Pr124) using angle-resolved photoemission spectroscopy (ARPES). In LSCO with x=0.12, the spectral feature near the Fermi level (EF) is almost flat from (π, 0) to (π, π/4), namely, along the stripe direction in LSCO. While the 1/4-filled chain in Pr123 has a band gap because of charge ordering, the metallic chain in Pr124 shows a dispersive feature which reaches EF at ~(π, π/4) and a flat feature near EF which is similar to that observed in the stripe phase of LSCO. Although Pr124 shows spectral-weight suppression near EF due to the instability toward charge ordering, the suppression is imperfect and Pr124 has a substantial spectral weight at EF probably due to the chain-chain coupling. This is in sharp contrast to LSCO with the perfect gap opening near (π, π/4). The difference between the stripe phase in LSCO and the coupled chains of Pr124 would be derived from the interaction between the stripe and the neighboring Cu spins which suppresses the charge ordering along the stripe.

Low energy quasiparticle dispersion of graphite by angle-resolved photoemission spectroscopy

2007 ◽  
Vol 244 (11) ◽  
pp. 4129-4133 ◽  
Author(s):  
A. Grüneis ◽  
T. Pichler ◽  
H. Shiozawa ◽  
C. Attaccalite ◽  
L. Wirtz ◽  
...  
Keyword(s):  
Low Energy ◽  
Photoemission Spectroscopy ◽  
Angle Resolved Photoemission Spectroscopy
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