407 citations · 2.3k across the 74 of their papers we have counts for
12 papers · 1 filter
Approaches to tunnel magnetoresistance effect with antiferromagnets
Katsuhiro Tanaka, Takuya Nomoto, Ryotaro Arita
The tunnel magnetoresistance (TMR) effect is one of the representative phenomena in spintronics. Ferromagnets, which have a net spin polarization, have been utilized for the TMR ef…
Giant Hall effect in a highly conductive frustrated magnet GdCu
Kosuke Karube, Yoshichika Ōnuki, Taro Nakajima +10
The Hall effect is one of the most fundamental but elusive phenomena in condensed matter physics due to the rich variety of underlying mechanisms. Here we report an exceptionally l…
Topological Hall effect of Skyrmions from First Principles
Hsiao-Yi Chen, Takuya Nomoto, Max Hirschberger +1
We formulate a first-principles approach for calculating the topological Hall effect (THE) in magnets with noncollinear nanoscale spin textures. We employ a modeling method to dete…
Calculation of the biquadratic spin interactions based on the spin cluster expansion for \textit{ab initio} tight-binding models
Tatsuto Hatanaka, Juba Bouaziz, Takuya Nomoto +1
We develop a calculation scheme using \textit{ab initio} tight-binding Hamiltonians to evaluate biquadratic magnetic interactions. This approach relies on the spin cluster expansio…
First-principles study on tunnel magnetoresistance effect with Cr-doped RuO electrode
Katsuhiro Tanaka, Takuya Nomoto, Ryotaro Arita
We investigate the functionality of the -doped as an electrode of the magnetic tunnel junction (MTJ), motivated by the recent experiment showing tha…
Efficient anisotropic Migdal-Eliashberg calculations with the Intermediate Representation basis and Wannier interpolation
Hitoshi Mori, Takuya Nomoto, Ryotaro Arita +1
In this study, we combine the ab initio Migdal-Eliashberg approach with the intermediate representation for the Green's function, enabling accurate and efficient calculations of th…
Effect of collective spin excitation on electronic transport in topological spin texture
Kohei Hattori, Hikaru Watanabe, Junta Iguchi +2
We develop an efficient real-time simulation method for the spin-charge coupled system in the velocity gauge. This method enables us to compute the real-time simulation for the two…
Nernst effect of high-mobility Weyl electrons in NdAlSi enhanced by a Fermi surface nesting instability
Rinsuke Yamada, Takuya Nomoto, Atsushi Miyake +7
The thermoelectric Nernst effect of solids converts heat flow to beneficial electronic voltages. Here, using a correlated topological semimetal with high carrier mobility in pr…
High-throughput calculations of antiferromagnets hosting anomalous transport phenomena
Takuya Nomoto, Susumu Minami, Yuki Yanagi +3
We develop a high-throughput computational scheme based on cluster multipole theory to identify new functional antiferromagnets. This approach is applied to 228 magnetic compounds…
Ab initio exploration of short-pitch skyrmion materials: Role of orbital frustration
Takuya Nomoto, Ryotaro Arita
In recent years, the skyrmion lattice phase with a short lattice constant has attracted attention due to its high skyrmion density, making it a promising option for achieving high-…
Continuous crossover between insulating ferroelectrics and the polar metals: \textit{Ab initio} calculation of structural phase transitions of LiO ( = Ta, W, Re, Os)
Ryota Masuki, Takuya Nomoto, Ryotaro Arita +1
Inspired by the recent discovery of a new polar metal LiReO by K. Murayama, \textit{et al}, we calculate the temperature()-dependent crystal structures of LiO3 with =…
Ferromagnetic state with large magnetic moments realized in epitaxially strained Sr3Ru2O7 films
Ren Oshima, Tatsuto Hatanaka, Shinichi Nishihaya +6
Technical advancement of oxide molecular beam epitaxy (MBE) has opened new avenues for studying various quantum transport phenomena in correlated transition-metal oxides, as exempl…