51 citations · 168 across the 8 of their papers we have counts for
8 papers
Fundamentals and advances in transverse thermoelectrics
Hiroto Adachi, Fuyuki Ando, Takamasa Hirai +3
Transverse thermoelectric effects interconvert charge and heat currents in orthogonal directions due to the breaking of either time-reversal symmetry or structural symmetry, enabli…
Designing flexible hard magnetic materials for zero-magnetic-field operation of the anomalous Nernst effect
Sang J. Park, Rajkumar Modak, Ravi Gautam +6
The global shift towards a carbon-neutral society has accelerated the demand for green energy, driving research into efficient technologies for harvesting energy from low-grade was…
Non-equilibrium Magnon Engineering Enabling Significant Thermal Transport Modulation
Takamasa Hirai, Toshiaki Morita, Subrata Biswas +13
Thermal conductivity, a fundamental parameter characterizing thermal transport in solids, is typically determined by electron and phonon transport. Although other transport propert…
Anomalous Ettingshausen effect in iron-carbon alloys
Ren Nagasawa, Koichi Oyanagi, Takamasa Hirai +3
We have investigated the anomalous Ettingshausen effect (AEE) in iron-carbon alloys, i.e., cast irons and steel, using the lock-in thermography. All the alloys exhibit the clear AE…
Sm-Co-based amorphous alloy films for zero-field operation of transverse thermoelectric generation
Rajkumar Modak, Yuya Sakuraba, Takamasa Hirai +8
Transverse thermoelectric generation using magnetic materials is essential to develop active thermal engineering technologies, for which the improvements of not only the thermoelec…
Deposition temperature dependence of thermo-spin and magneto-thermoelectric conversion in CoMnGa films on YFeO and GdGaO
Hayato Mizuno, Rajkumar Modak, Takamasa Hirai +4
We have characterized CoMnGa (CMG) Heusler alloy films grown on YFeO (YIG) and GdGaO (GGG) substrates at different deposition temperatures and inv…
Phase-transition-induced giant Thomson effect for thermoelectric cooling
Rajkumar Modak, Masayuki Murata, Dazhi Hou +7
The Seebeck and Peltier effects have been widely studied and used in various thermoelectric technologies, including thermal energy harvesting and solid-state heat pumps. However, b…
Combinatorial tuning of electronic structure and thermoelectric properties in CoMnAlSi Weyl semimetals
Rajkumar Modak, Kazuki Goto, Shigenori Ueda +3
A tuning of Fermi level (E) near Weyl points is one of the promising approaches to realize large anomalous Nernst effect (ANE). In this work, we introduce an efficient approach…