Demonstration of the importance of substrate design to enhance the temperature modulation induced by the anomalous Ettingshausen effect (AEE), which is a transverse magneto-thermoelectric effect in magnetic materials. [R. Modak and K. Uchida, Appl. Phys. Lett. 116, 032403 (2020)]
Demonstration of a high-throughput approach by combining combinatorial thin film deposition and LIT to investigate the transverse thermoelectric properties by systematically tuning Fermi energy of Heusler alloy-based Weyl semimetal films. [R. Modak et al., APL Mater. 9, 031105 (2021)]
Discovery of Sm-Co-based amorphous permanent magnet films with superior properties to realize the zero-field operation of transverse thermoelectric generation based on anomalous Nernst effect. [R. Modak et al., Sci. Technol. Adv. Mater. 23, 768 (2022); Patent: US20240284798A1]
Observation of phase-transition-induced giant nonlinear thermoelectric effect (or Thomson effect) in FeRh-based alloys despite their small Seebeck coefficient, and demonstration of Thomson-effect-induced steady-state cooling [R. Modak et al., Appl. Phys. Rev. 9, 011414 (2022), selected as a featured article and highlighted in AIP Scilight]
The first direct observation of anisotropic magneto-Thomson-effect-induced cooling/heating in NiPt alloy, one of the nonlinear magneto-thermoelectric conversion phenomena in magnetic materials. [R. Modak et al., Phys. Rev. Lett. 131, 206701 (2023)]
Proposed and demonstrated a method for high-throughput screening of magnetoresistance materials based on lock-in thermography technique and demonstration of its utility using composition-spread magnetic granular films. [R. Modak et al., Adv. Phys. Research 3, 2400021 (2024)]