124 citations · 209 across the 14 of their papers we have counts for
14 papers
Molecular beam epitaxy synthesis of ternary nitride PrTaN and its crystal structure determination
Kosuke Takiguchi, Yoshiharu Krockenberger, Eisuke Magome +2
We report the discovery of a novel ternary nitride PrTaN synthesized as a thin film using molecular beam epitaxy. The combination of e-beam evaporation for refractory elements…
Electronic transport properties of titanium nitride grown by molecular beam epitaxy
Kosuke Takiguchi, Yoshiharu Krockenberger, Tom Ichibha +4
This study investigates the molecular beam epitaxial (MBE) growth of titanium nitride (TiN) thin films, achieving a high residual resistivity ratio (RRR) of 15.8. We observed a str…
Role of Ion Milling Angle in Determining Conducting and Insulating States on SrTiO3 Surfaces
Yuki K. Wakabayashia, Yoshiharu Krockenberger, Kosuke Takiguchi +2
SrTiO3 (STO), a promising wide-bandgap semiconductor for high-k capacitors and photocatalysis, requires precise surface control for device fabrication. This study investigates the…
Berezinskii-Kosterlitz-Thouless transition in rhenium nitride films
Kosuke Takiguchi, Yoshiharu Krockenberger, Yoshitaka Taniyasu +1
The quest to manipulate and understand superconductivity demands exploring diverse materials and unconventional behaviors. Here, we investigate the BKT transition in synthesized Re…
Gate-controlled proximity magnetoresistance in In1-xGaxAs/(Ga,Fe)Sb bilayer heterostructures
Kosuke Takiguchi, Kyosuke Okamura, Le Duc Anh +1
The magnetic proximity effect (MPE), ferromagnetic coupling at the interface of magnetically dissimilar layers, attracts much attention as a promising pathway for introducing ferro…
Single-domain perpendicular magnetization induced by the coherent O 2p-Ru 4d hybridized state in an ultra-high-quality SrRuO3 film
Yuki K. Wakabayashi, Masaki Kobayashi, Yukiharu Takeda +8
We investigated the Ru 4d and O 2p electronic structure and magnetic properties of an ultra-high-quality SrRuO3 film on SrTiO3 grown by machine-learning-assisted molecular beam epi…
Growth and characterization of quaternary-alloy ferromagnetic semiconductor (In,Ga,Fe)Sb
Tomoki Hotta, Kengo Takase, Kosuke Takiguchi +3
We study the growth and properties of quaternary-alloy ferromagnetic semiconductor (FMS) (In0.94-x,Gax,Fe0.06)Sb (x = 5% - 30%, Fe concentration is fixed at 6%) grown by low temper…
High-mobility two-dimensional carriers from surface Fermi arcs in magnetic Weyl semimetal films
Shingo Kaneta-Takada, Yuki K. Wakabayashi, Yoshiharu Krockenberger +10
High-mobility two-dimensional carriers originating from surface Fermi arcs in magnetic Weyl semimetals are highly desired for accessing exotic quantum transport phenomena and for t…
Elemental topological Dirac semimetal α-Sn with high quantum mobility
Le Duc Anh, Kengo Takase, Takahiro Chiba +3
α-Sn with a diamond-type crystal structure provides an ideal avenue to investigate novel topological properties owing to its rich diagram of topological phases and simple elemental…
Structural and transport properties of highly Ru-deficient SrRu0.7O3 thin films prepared by molecular beam epitaxy: comparison with stoichiometric SrRuO3
Yuki K. Wakabayashi, Shingo Kaneta-Takada, Yoshiharu Krockenberger +5
We investigate structural and transport properties of highly Ru-deficient SrRu0.7O3 thin films prepared by molecular beam epitaxy on (001) SrTiO3 substrates. To distinguish the inf…
Current-in-plane spin-valve magnetoresistance in ferromagnetic semiconductor (Ga,Fe)Sb heterostructures with high Curie temperature
Kengo Takase, Le Duc Anh, Kosuke Takiguchi +1
We demonstrate spin-valve magnetoresistance with a current-in-plane (CIP) configuration in (Ga,Fe)Sb / InAs (thickness nm) / (Ga,Fe)Sb trilayer heterostructures,…
Quantum transport evidence of Weyl fermions in an epitaxial ferromagnetic oxide
Kosuke Takiguchi, Yuki K. Wakabayashi, Hiroshi Irie +8
Magnetic Weyl fermions, which occur in magnets, have novel transport phenomena related to pairs of Weyl nodes, and they are, of both, scientific and technological interest, with th…
Giant gate-controlled odd-parity magnetoresistance in one-dimensional channels with a magnetic proximity effect
Kosuke Takiguchi, Le Duc Anh, Takahiro Chiba +3
According to Onsager's principle, electrical resistance of general conductors behaves as an even function of external magnetic field . Only in special circumstances, which i…
Giant gate-controlled proximity magnetoresistance in semiconductor-based ferromagnetic/nonmagnetic bilayers
Kosuke Takiguchi, Le Duc Anh, Takahiro Chiba +3
The evolution of information technology has been driven by the discovery of new forms of large magnetoresistance (MR), such as giant magnetoresistance (GMR) and tunnelling magnetor…