407 citations · 2.3k across the 74 of their papers we have counts for
11 papers · 1 filter
Tuning the Parity Mixing of Singlet-Septet Pairing in a Half-Heusler Superconductor
K. Ishihara, T. Takenaka, Y. Miao +12
In superconductors, electrons with spin form Cooper pairs whose spin structure is usually singlet () or triplet (). When the electronic structure near the F…
Wannier-based implementation of the coherent potential approximation with applications to Fe-based transition-metal alloys
Naohiro Ito, Takuya Nomoto, Koji Kobayashi +5
We develop a formulation of the coherent potential approximation (CPA) on the basis of the Wannier representation to develop a computationally efficient method for the treatment of…
Giant effective damping of octupole oscillation in an antiferromagnetic Weyl semimetal
Shinji Miwa, Satoshi Iihama, Takuya Nomoto +8
A magnetic Weyl semimetal is a recent focus of extensive research as it may exhibit large and robust transport phenomena associated with topologically protected Weyl points in mome…
Anharmonic Grüneisen theory based on self-consistent phonon theory: Impact of phonon-phonon interaction neglected in the quasiharmonic theory
Ryota Masuki, Takuya Nomoto, Ryotaro Arita +1
We formulate a theory of thermal expansion based on the self-consistent phonon (SCP) theory, which nonperturbatively considers the anharmonic effect. We show that the Grünseisen fo…
Doping fingerprints of spin and lattice fluctuations in moiré superlattice systems
Niklas Witt, José M. Pizarro, Jan Berges +3
Twisted Van der Waals systems offer the unprecedented possibility to tune different states of correlated quantum matter with an external non-invasive electrostatic doping. The natu…
Efficient ab initio many-body calculations based on sparse modeling of Matsubara Green's function
Hiroshi Shinaoka, Naoya Chikano, Emanuel Gull +6
This lecture note reviews recently proposed sparse-modeling approaches for efficient ab initio many-body calculations based on the data compression of Green's functions. The sparse…
Multipole polaron in the devil's staircase of CeSb
Y. Arai, Kenta Kuroda, T. Nomoto +17
Rare-earth intermetallic compounds exhibit rich phenomena induced by the interplay between localized orbitals and conduction electrons. However, since the energy scale of the c…
Emergence of spin-orbit coupled ferromagnetic surface state derived from Zak phase in a nonmagnetic insulator FeSi
Yusuke Ohtsuka, Naoya Kanazawa, Motoaki Hirayama +13
A chiral compound FeSi is a nonmagnetic narrow-gap insulator, exhibiting peculiar charge and spin dynamics beyond a simple band-structure picture. Those unusual features have been…
Absence of conventional room temperature superconductivity at high pressure in carbon doped HS
Tianchun Wang, Motoaki Hirayama, Takuya Nomoto +3
In this work, we show that the same theoretical tools that successfully explain other hydrides systems under pressure seem to be at odds with the recently claimed conventional room…
Direct observation of the layer-number-dependent electronic structure in few-layer WTe2
M. Sakano, Y. Tanaka, S. Masubuchi +9
When a crystal becomes thinner and thinner to the atomic level, peculiar phenomena discretely depending on its layer-numbers (n) start to appear. The symmetry and wave functions st…
Skyrmion-size dependence of the topological Hall effect: A real-space calculation
Akira Matsui, Takuya Nomoto, Ryotaro Arita
Motivated by the recent discoveries of magnets harboring short-pitch skyrmion lattices, we investigate the skyrmion-size dependence of the topological Hall effect. By means of larg…