Uniaxial magnetic anisotropies in Fe films on single crystal and virtual Ge(001) substrates studied with spin polarized inverse photoemission and MOKE

2006 ◽  
Vol 74 (13) ◽  
Author(s):  
M. Cantoni ◽  
M. Riva ◽  
R. Bertacco ◽  
F. Ciccacci
Keyword(s):  
Single Crystal ◽  
Inverse Photoemission ◽  
Spin Polarized

SPIN DEPENDENCE OF PAIR TUNNELING PROPERTIES OF Bi2Sr2CaCu2O8+x INTRINSIC JOSEPHSON JUNCTIONS

2005 ◽  
Vol 19 (01n03) ◽  
pp. 199-203 ◽  
Author(s):  
DO BANG ◽  
HU-JONG LEE ◽  
MYUNG-HO BAE ◽  
WANG-HYUN PARK
Keyword(s):  
External Field ◽  
Single Crystal ◽  
Josephson Junctions ◽  
Phase Fluctuation ◽  
Superconducting Gap ◽  
Spin Dependence ◽  
Intrinsic Josephson Junctions ◽  
Pair Tunneling ◽  
Spin Polarized ◽  
Pancake Vortices

Detailed tunneling characteristics of a stack of intrinsic Josephson junctions in a Bi 2 Sr 2 CaCu 2 O 8+x single crystal were obtained both in spin-degenerate and spin-polarized bias configurations. Injection of the spin-polarized quasiparticles effectively weakened the in-plane superconducting strength and the interlayer Jospehson coupling. The superconducting gap and the Josephson critical current of the stack were, in general, further suppressed by an external field applied in parallel with the c-axis direction. Study of the spin-dependent tunneling characteristics may provide valuable information on clarifying the mechanism of high-Tc superconductivity as well as the interlayer phase fluctuation induced by the "pancake vortices" on CuO 2 layers.

Spin polarized inverse photoemission studies of surface magnetism and electronic structure

1986 ◽  
Vol 54-57 ◽  
pp. 617-621 ◽  
Author(s):  
D.T. Pierce ◽  
A. Seiler ◽  
C.S. Feigerle ◽  
J.L. Peña ◽  
R.J. Celotta
Keyword(s):  
Electronic Structure ◽  
Surface Magnetism ◽  
Inverse Photoemission ◽  
Spin Polarized

High-density magnetic-vacancy inclusion in Co2MnGa single crystal probed by spin-polarized positron annihilation spectroscopy

2021 ◽  
Author(s):  
Atsumi Miyashita ◽  
M. Maekawa ◽  
Y. Shimoyama ◽  
N. Seko ◽  
Atsuo Kawasuso ◽  
...  
Keyword(s):  
Single Crystal ◽  
Positron Annihilation ◽  
Electrical Transport ◽  
Positron Annihilation Spectroscopy ◽  
Ordered Structure ◽  
Electrical Transport Properties ◽  
Weyl Semimetal ◽  
Spin Polarized ◽  
B2 Structure

Abstract Co2MnGa is a Weyl semimetal exhibiting giant anomalous Hall and Nernst effects. Using spin-polarized positron annihilation spectroscopy, we examined a Bridgman-grown Co2MnGa single crystal with a nearly perfect L21-ordered structure and a reference Co2MnAl polycrystal with a Mn-Al-disordered B2 structure. We found that a large amount of magnetic vacancies (more than 100 ppm) were included in the Co2MnGa crystal but not the Co2MnAl crystal. We discuss possible reasons for the inclusion of vacancies, the role of vacancies in the development of the ordered structure, and the electronic states associated with the vacancies. Towards the development of Co2MnGa-based devices, the manners for reducing vacancies as well as the influence of vacancies on the electrical transport properties should be considered.

Chemisorbed oxygen on Ni(110) studied by spin polarized inverse photoemission

1985 ◽  
Vol 3 (3) ◽  
pp. 1487-1490 ◽  
Author(s):  
C. S. Feigerle ◽  
A. Seiler ◽  
J. L. Peña ◽  
R. J. Celotta ◽  
D. T. Pierce
Keyword(s):  
Inverse Photoemission ◽  
Chemisorbed Oxygen ◽  
Spin Polarized

Apparatus for spin-polarized inverse photoemission and spin scattering

2000 ◽  
Author(s):  
Takashi Komesu ◽  
Carlo Waldfried ◽  
Hae-kyung Jeong ◽  
David P. Pappas ◽  
T. Rammer ◽  
...  
Keyword(s):  
Inverse Photoemission ◽  
Spin Polarized ◽  
Spin Scattering

Spin polarized tunneling through single-crystal GaAs(001) barriers

2002 ◽  
Vol 80 (24) ◽  
pp. 4582-4584 ◽  
Author(s):  
S. Kreuzer ◽  
J. Moser ◽  
W. Wegscheider ◽  
D. Weiss ◽  
M. Bichler ◽  
...  
Keyword(s):  
Single Crystal ◽  
Spin Polarized ◽  
Crystal Gaas ◽  
Spin Polarized Tunneling

Detection of Spin Polarized Carrier in Silicon Nanowire with Single Crystal MnSi as Magnetic Contacts

Nano Letters ◽  
2010 ◽  
Vol 10 (6) ◽  
pp. 2281-2287 ◽  
Author(s):  
Yung-Chen Lin ◽  
Yu Chen ◽  
Alexandros Shailos ◽  
Yu Huang
Keyword(s):  
Single Crystal ◽  
Silicon Nanowire ◽  
Spin Polarized
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