A5088590035- Topological Materials and Phenomena
- Rare-earth and actinide compounds
- Magnetic properties of thin films
- Magnetic Properties of Alloys
- Phase-change materials and chalcogenides
- Plant responses to water stress
- Quantum many-body systems
- Iron-based superconductors research
- Microfluidic and Capillary Electrophoresis Applications
- Nanopore and Nanochannel Transport Studies
- Fluid Dynamics Simulations and Interactions
- Magnetic Field Sensors Techniques
- Quantum and electron transport phenomena
- Earthquake and Tsunami Effects
- Advanced Condensed Matter Physics
- Inertial Sensor and Navigation
- Semiconductor Quantum Structures and Devices
- Microfluidic and Bio-sensing Technologies
- Graphene research and applications
Tokyo Institute of Technology
2024
National Institute of Technology, Yonago College
2021
Searching for an ideal magnetic Weyl semimetal hosting only a single pair of points has been focal point systematic clarification its unique magnetotransport derived from the interplay between topology and magnetization. Among candidates, triangular-lattice antiferromagnet EuCd2As2 attracting special attention due to prediction phase in ferromagnetic state; however, transport properties low-carrier density samples have remained elusive. Here, we report molecular beam epitaxy growth films,...
Here we study nonmonotonic features which appear both in magnetoresistivity and anomalous Hall resistivity during the simple magnetization process, by systematically measuring type-II magnetic Weyl semimetal EuCd$_2$Sb$_2$ films over a wide carrier density range. We find that positive hump can be explained as manifestation of field-linear term generalized magnetoconductivity formula including Berry curvature. As also confirmed model calculation, negative pronounced near point energy case...
For over a century, the Hall effect, transverse effect under an out-of-plane magnetic field or magnetization, has been cornerstone for magnetotransport studies and applications. Modern theoretical formulation based on Berry curvature revealed potential that even in-plane can induce anomalous but its experimental demonstration remained difficult due to potentially small magnitude strict symmetry requirements. Here, we report observation of by measuring low-carrier density films Weyl semimetal...
We investigate the magnetic order in single crystalline EuCd$_2$Sb$_2$ thin films using a combined theoretical and experimental approach. Resonant elastic x-ray scattering experiments reveal sharp peak at $q = (0, 0, \frac{1}{2})$ below $T_N 7.2$ K, indicative of interlayer antiferromagnetic ordering. Additionally, we observe weak diffuse signal centered 1)$ that persists above $T_N$, up to $T_C \sim 11$ K. Our Monte-Carlo simulations classical spin model approximation Eu sublattice...
For over a century, the Hall effect, transverse effect under out-of-plane magnetic field or magnetization, has been cornerstone for magnetotransport studies and applications. Modern theoretical formulation based on Berry curvature revealed potential that even in-plane can induce anomalous but its experimental demonstration remained difficult due to potentially small magnitude strict symmetry requirements. Here we report observation of by measuring low-carrier density films Weyl semimetal...
Rare earth intermetallic compounds crystallized in AlB$_2$-type and its low-symmetry derivative CeCu$_2$-type structures potentially host diverse frustrated magnetic rich magnetotransport phenomena. We report the film growth of EuZn$_2$ by molecular beam epitaxy observation topological Hall responses highly contrastive to isostructural EuCd$_2$. While their magnetization curves are rather similar, effect observed is simpler, with only one component enhanced at transition field. may be a...
Rare-earth intermetallic compounds crystallized in AlB2-type and its low-symmetry derivative CeCu2-type structures potentially host diverse frustrated magnetic rich magnetotransport phenomena. We report the film growth of EuZn2 by molecular beam epitaxy observation topological Hall responses highly contrastive to isostructural EuCd2. While their magnetization curves are rather similar, effect observed is simpler, with only one component enhanced at transition field. may be a unique system...
Abstract The sorting devices of microfluidic systems operate by both passive and active mechanisms. microchannels these are often curved to cope with secondary flows, which allow or mixing. Therefore, it is essential characterize the flows in systems. In this study, we investigate particle behavior a spiral rectangular microchannel clarify effects aspect ratio Dean number De on comparing experimental numerical results. We fabricated Archimedean models cross-section millimeter-scale...