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12 papers · 2 filters
Observation of momentum space semi-localization in Si-doped -GaO
P. Richard, T. Sato, S. Souma +7
We performed an angle-resolved photoemission spectroscopy study of Si-doped -GaO. We observed very small photoemission intensity near the Fermi level corresponding to no…
Longitudinal Spin Seebeck Effect Free from the Proximity Nernst Effect
T. Kikkawa, K. Uchida, Y. Shiomi +6
This letter provides evidence for intrinsic longitudinal spin Seebeck effects (LSSEs) that are free from the anomalous Nernst effect (ANE) caused by an extrinsic proximity effect.…
Spin Seebeck effect in antiferromagnets and compensated ferrimagnets
Yuichi Ohnuma, Hiroto Adachi, Eiji Saitoh +1
We theoretically investigate the spin Seebeck effect (SSE) in antiferromagnets and ferrimagnets, and show that the SSE vanishes in antiferromagnets but survives in ferrimagnets eve…
Degree of order dependence on magnetocrystalline anisotropy in bct FeCo alloys
Yohei Kota, Akimasa Sakuma
We investigate the magnetocrystalline anisotropy (MCA) energy of tetragonal distorted FeCo alloys depending on the degree of order by first-principles electronic structure calculat…
The Effects of Post-Thermal Annealing on the Emission Spectra of GaAs/AlGaAs Quantum Dots grown by Droplet Epitaxy
Pilkyung Moon, J. D. Lee, S. K. Ha +5
We fabricated GaAs/AlGaAs quantum dots by droplet epitaxy method, and obtained the geometries of the dots from scanning transmission electron microscopy data. Post-thermal annealin…
Observation of Negative Contact Resistances in Graphene Field-Effect Transistors
Ryo Nouchi, Tatsuya Saito, Katsumi Tanigaki
The gate-voltage (VG) dependence of the contact resistance (RC) in graphene field-effect transistors is characterized by the transmission line model. The RC-VG characteristics of A…