7 citations · 19 across the 17 of their papers we have counts for
18 papers
High-Efficiency and Large Supercurrent Rectification with Superconducting Coil
Takumi Ichikawa, Daisuke Takegami, Gen Nishijima +8
Superconducting diodes (SDs) are devices that rectify supercurrent through the difference in the superconducting critical current (Ic) between forward and reverse current direction…
Observation of giant nonvolatile magneto-thermal switching in superconductor-ferromagnet hybrids
Yui Sakamoto, Fuyuki Ando, Keigo Ito +6
Magneto-thermal switch is a crucial thermal component which enables heat transfer control by the application of an external magnetic field. Recently, a nonvolatile behavior in magn…
Low-temperature magnetic-field-driven thermal oscillator based on metal-superconductor joint
Poonam Rani, Yoshikazu Mizuguchi
Thermal control is one of the important technologies for fundamental science and thermal management. Among them, thermal oscillators have been in demands in the field of materials…
Revealing nonvolatile behaviors in magneto-thermal switching using microstructure-controlled superconducting composites
Keigo Ito, Yui Sakamoto, Hossein Sepehri-Amin +12
Thermal conductivity in a conductor changes by the application of an external magnetic field, which functions as a magneto-thermal switch. For superconductors, a large magneto-ther…
Insight into high-entropy effect in body-centered cubic superconducting alloys
Hanabusa Senga, Yuto Watanabe, Fubuki Iwase +6
We have characterized the superconducting critical temperature (), the Debye temperature (), the electronic specific heat coefficient, and the Vickers m…
Enhanced in eutectic high-entropy alloy superconductors Hf-Nb-Sc-Ti-Zr
Issei Kubo, Yuto Watanabe, Shuma Kawashima +4
The present investigation into the superconducting properties of eutectic high-entropy alloy (HEA) Hf-Nb-Sc-Ti-Zr systems reveals an enhanced superconducting critical temperature (…
Thermal rectification in jointless Pb solid wire
Masayuki Mashiko, Poonam Rani, Yuto Watanabe +1
Thermal rectification is observed in jointless Pb wires at temperatures near the superconducting transition of Pb under magnetic fields. Using different magnetic-field (H) response…
Magneto-Tunable Thermal Diode Based on Bulk Superconductor
Poonam Rani, Masayuki Mashiko, Keisuke Hirata +2
Thermal diode is a growing technology and important for active thermal flow control. Since the theoretical designing of thermal diode in 2004, various kinds of solid-state thermal…
High critical current densities of body-centered cubic high-entropy alloy superconductors: recent research progress
Jiro Kitagawa, Yoshikazu Mizuguchi, Terukazu Nishizaki
High-entropy alloy (HEA) superconductors have garnered significant attention due to their unique characteristics, such as robust superconductivity under extremely high pressure and…
Direct Observation of Vortices and Antivortices Generation in Phase-Separated Superconductor Sn-Pb Solder
Hiroto Arima, Takumi Murakami, Yuto Kinoshita +4
Quantized vortices in type-II superconductors provide insights into the mechanisms of superconductivity. However, the generation of antivortices, characterized by magnetization ant…
Nonvolatile magneto-thermal switching driven by vortex trapping in commercial In-Sn solder
Poonam Rani, Takumi Murakami, Yuto Watanabe +4
Magneto-thermal switching (MTS) is a key technology for efficient thermal management. Recently, large MTS with nonvolatility has been observed in Sn-Pb solders [H. Arima et al., Co…
Influence of trapped magnetic field of Sn-Pb solders on electrical resistivity measurement: an example of superconducting transition of Sn
Takumi Ichikawa, Yuto Watanabe, Takumi Murakami +3
We examined the affection of the flux-trapped states of Sn60-Pb40 solders on superconducting properties of a Sn wire. The temperature dependence of electrical resistivity at H = 0…
Superconducting properties of eutectic high-entropy alloy superconductor NbScTiZr
Jiro Kitagawa, Haruto Ueta, Yuto Watanabe +3
The influence of annealing on the superconducting properties of eutectic high-entropy alloy NbScTiZr was examined by measuring magnetization, electrical resistivity, and zero-field…
Aging Effects on Superconducting Properties of BiS2-Based Compounds: First-12-Year Restudy
Poonam Rani, Rajveer Jha, V. P. S. Awana +1
Decomposition of superconductors sometimes becomes crucial when studying essential physical properties of the superconductors. For example, the cuprate superconductor YBa2Cu3O7-d d…
Large self-heating by trapped-flux reduction in Sn-Pb solders
Yoshikazu Mizuguchi, Takumi Murakami, Md. Riad Kasem +1
Magnetic flux trapping in field-cooled (FC) Sn-Pb solders has been recently studied because of the observation of nonvolatile magneto-thermal switching [H. Arima et al., Commun. Ma…
Vortex formation and exotic superconducting states in field-cooled Sn-Pb solders
Takumi Murakami, Md. Riad Kasem, Hiroto Arima +3
Formation of vortices is a typical phenomenon of type-II superconductors under magnetic fields (H). In contrast, type-I superconductors do not host vortices because of their Meissn…
Magnetic field hysteresis of thermal conductivity in type-I and typy-II superconductors
Hiroto Arima, Miku Yoshida, Yoshikazu Mizuguchi
This study investigated the magnetic field () dependence of thermal conductivity () in type I (Pb) and type II (Nb) superconductors. The of Nb displayed hysteresis, showi…
Effect of annealing in eutectic high-entropy alloy superconductor NbScTiZr
Takeru Seki, Hiroto Arima, Yuta Kawasaki +3
We investigated the impact of annealing on the structural characteristics and superconducting critical temperature () of the eutectic high-entropy alloy (HEA) superco…