Spin-Polarized Splittings in the Temperature-Dependent Reflectance of EuO

1969 ◽  
Vol 22 (25) ◽  
pp. 1385-1388 ◽  
Author(s):  
J. Feinleib ◽  
W. J. Scouler ◽  
J. O. Dimmock ◽  
J. Hanus ◽  
T. B. Reed ◽  
...  
Keyword(s):  
Temperature Dependent ◽  
Spin Polarized

Spin polarized conduction and valence band states in GdN

MRS Advances ◽  
2017 ◽  
Vol 2 (3) ◽  
pp. 153-158 ◽  
Author(s):  
Muhammad Azeem
Keyword(s):  
Valence Band ◽  
Optical Transmission ◽  
Energy Gap ◽  
Ferromagnetic State ◽  
Spin Splitting ◽  
Transmission Spectra ◽  
Temperature Dependent ◽  
Spin Polarized ◽  
Transmission Measurements ◽  
Optical Transmission Spectra

AbstractOptical transmission spectra are collected in the ferromagnetic state of GdN at various temperatures. The temperature dependent extinction coefficient extracted from the transmission measurements show that the conduction and valence band states are spin polarized. The results confirm the LSDA+U estimates of the energy gap associated with the majority/minority-spins and also the magnitude of the spin splitting.

scholarly journals A Landau-Ginzburg Description of Sb Overlayers

2001 ◽  
Vol 674 ◽  
Author(s):  
R. Skomski ◽  
T. Komesu ◽  
H.-K. Jeong ◽  
C. N. Borca ◽  
P. A. Dowben ◽  
...  
Keyword(s):  
Spin Polarization ◽  
Heusler Alloy ◽  
Function Approximation ◽  
Gaussian Approximation ◽  
Temperature Dependent ◽  
Half Metallic ◽  
Spin Polarized ◽  
Spin Excitations ◽  
Injection Depth ◽  
Inverse Photoemission Spectroscopy

ABSTRACTThe spin polarization of Sb overlayers on the semi-Heusler alloy NiMnSb is investigated in terms of the Landau-Ginzburg approach. The half-metallic semi-Heusler alloy NiMnSb acts as a ferromagnetic perturbation and induces a spin polarization in the semimetallic Sb overlayer. Using a Gaussian approximation, the propagation of the spin perturbation in the overlayer is calculated. The results are compared with spin-polarized inverse photoemission spectroscopy (SPIPES) results and with recent spin-dependent envelope-function approximation (SDEFA) predictions. The Landau-Ginzburg parameters are both band-structure and temperature dependent, and it is argued that thermal spin excitations lead to an injection depth decreasing as 1//T law at high temperatures.

Temperature dependent relaxation lifetime T1, T2 measurements of the spin-polarized 87Rb atoms

Optik ◽  
2019 ◽  
Vol 180 ◽  
pp. 517-525 ◽  
Author(s):  
Hong-Liang Ke ◽  
Pei-Xian Miao ◽  
Shi-Yu Yang ◽  
Jian-Hui Tu ◽  
Jian Hao ◽  
...  
Keyword(s):  
Temperature Dependent ◽  
Spin Polarized

Spin Polarized Electron Spectroscopies of 3d and 4f Systems

1993 ◽  
Vol 313 ◽  
Author(s):  
H. Hopster
Keyword(s):  
Transition Metals ◽  
Magnetic Coupling ◽  
Atomic Layer ◽  
Antiferromagnetic Order ◽  
Layer By Layer ◽  
Temperature Dependent ◽  
Spin Polarized ◽  
Surface Magnetization ◽  
Surface Spin ◽  
Electron Energy Loss

AbstractRecent results from spin polarized electron spectroscopie studies of surfaces and ultrathin films are presented. The Magnetic coupling of 3d transition Metals (Cr,Mn) to the Fe (100) surface is studied by spin polarized electron energy loss spectroscopy. The first atomic layer of Cr and mn aligns antiparallel to the Fe. For larger thicknesses we find evidence for layer-by-layer antiferromagnetic order. In the range of 1–6 atomic layers the behavior is more complex with the surface of the Cr films showing preferential ferromagnetic alignment while the mn surface aligns antiparallel to the Fe substrate.Secondary electrons from Gd (0001) surfaces are shown to be highly spin polarized. However, no enhancement mechanism at low kinetic energy as in the 3d transition metals is observed indicating the absence of strongly spin dependent inelastic scattering in Gd. Temperature dependent spin polarized 4f photoemis-sion results show almost complete polarization demonstrating ferromagnetic surface coupling. However, a perpendicular surface magnetization component is found indicating surface spin canting. A large enhancement of the surface Curie temperature is also present.

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