407 citations · 2.3k across the 74 of their papers we have counts for
15 papers · 1 filter
Gate-controlled BCS-BEC crossover in a two-dimensional superconductor
Yuji Nakagawa, Yuichi Kasahara, Takuya Nomoto +3
The Bardeen-Cooper-Schrieffer (BCS) condensation and the Bose-Einstein condensation (BEC) are the two extreme limits of the ground state of the paired fermion systems. We report cr…
Efficient fluctuation exchange approach to low-temperature spin fluctuations and superconductivity: from the Hubbard model to NaCoOHO
Niklas Witt, Erik G. C. P. van Loon, Takuya Nomoto +2
Superconductivity arises mostly at energy and temperature scales that are much smaller than the typical bare electronic energies. Since the computational effort of diagrammatic man…
Origin of anomalous temperature dependence of Nernst effect in narrow-gap semiconductors
Ryota Masuki, Takuya Nomoto, Ryotaro Arita
Based on the Boltzmann transport theory, we study the origin of the anomalous temperature dependence of the Nernst coefficient () due to the phonon-drag mechanism. For narrow-ga…
Imaging the coupling between itinerant electrons and localised moments in the centrosymmetric skyrmion magnet GdRu2Si2
Yuuki Yasui, Christopher J. Butler, Nguyen Duy Khanh +8
Magnetic skyrmions were thought to be stabilised only in inversion-symmetry breaking structures, but skyrmion lattices were recently discovered in inversion symmetric Gd-based comp…
First-Principles Design of Halide-Reduced Electrides: Magnetism and Topological Phases
Tonghua Yu, Motoaki Hirayama, José A. Flores-Livas +3
We propose a design scheme for potential electrides derived from conventional materials. Starting with rare-earth-based ternary halides, we exclude halogens and perform global stru…
Competing spin modulations in a magnetically frustrated semimetal EuCuSb
Hidefumi Takahashi, Kai Aono, Yusuke Nambu +6
The competing magnetic ground states of the itinerant magnet EuCuSb, which has a hexagonal layered structure, were studied via magnetization, resistivity, and neutron diffraction m…
High-pressure synthesis of BaRhO, a rhodate analogue of the layered perovskite Sr-ruthenate
I. Kurata, José A. Flores-Livas, H. Sugimoto +6
A new layered perovskite-type oxide BaRhO was synthesized by a high-pressure technique with the support of convex-hull calculations. The crystal and electronic structure we…
Reaching room temperature superconductivity by optimizing doping in LaH?
José A. Flores-Livas, Tianchun Wang, Takuya Nomoto +4
Intuitively, doping represents one of the most promising avenues for optimization of best prospect superconductors (SC) such as conventional high-pressure SCs with record critical…
Enhancement of transverse thermoelectric conductivity originating from stationary points in nodal line
Susumu Minami, Fumiyuki Ishii, Motoaki Hirayama +3
Motivated by the recent discovery of a large anomalous Nernst effect in CoMnGa, Fe (=Al, Ga) and CoSnS, we performed a first-principles study to clarify the…
Superconductivity in Uniquely Strained RuO Films
Masaki Uchida, Takuya Nomoto, Maki Musashi +2
We report strain engineering of superconductivity in RuO singlecrystalline films, which are epitaxially grown on rutile TiO and MgF substrates with various crystal orie…
Benchmark for Ab Initio Prediction of Magnetic Structures based on Cluster-Multipole Theory
Marie-Therese Huebsch, Takuya Nomoto, Michi-To Suzuki +1
The cluster multipole (CMP) expansion for magnetic structures provides a scheme to systematically generate candidate magnetic structures specifically including noncollinear magneti…
Electrical Manipulation of a Topological Antiferromagnetic State
Hanshen Tsai, Tomoya Higo, Kouta Kondou +9
Electrical manipulation of emergent phenomena due to nontrivial band topology is a key to realize next-generation technology using topological protection. A Weyl semimetal is a thr…
Magnetic exchange coupling in cuprate-analog nickelates
Yusuke Nomura, Takuya Nomoto, Motoaki Hirayama +1
Motivated by the recent discovery of superconductivity in doped NdNiO, we study the magnetic exchange interaction in layered nickelates from first principles. The mot…
Efficient ab initio Migdal-Eliashberg calculation considering the retardation effect in phonon-mediated superconductors
Tianchun Wang, Takuya Nomoto, Yusuke Nomura +4
We formulate an efficient scheme to perform Migdal-Eliashberg calculation considering the retardation effect from first principles. While the conventional approach requires a huge…
Local force method for the ab initio tight-binding model with spin-dependent hopping
Takuya Nomoto, Takashi Koretsune, Ryotaro Arita
To estimate the Curie temperature of metallic magnets from first principles, we develop a local force method for the tight-binding model having spin-dependent hopping derived from…