Yajian Hu

Gate leakage evaluation of GAA transistors using SEMs

Yasuhiro Shirasaki, Yajian Hu, Kazufumi Yachi, Minami Shoji et autres

High-precision inline metrology of Si photonics devices on 300mm wafers using CD-SEM

Yajian Hu, Hiroaki Kasai, Miki Isawa, Nobuyuki Mise et autres

Successive magnetic transitions and multiferroicity in layered honeycomb BiCrTeO$_{6}$

Arkadeb Pal, P. H. Lee, J. Khatua, Chin‐Wei Wang et autres

Low-dimensional magnetic systems based on honeycomb lattices provide a promising platform for exploring exotic quantum phenomena that emerge from the intricate interplay of competing spin, orbital, lattice, and dipolar degrees of freedom. Here, we present a comprehensive study of the layered honeycomb …

Environmental and Economic Impacts of V2X Applications in Electric Vehicles: A Long-Term Perspective for China

Yajian Hu, Richao Cong, Toru Matsumoto, Yue Li

Electric vehicles (EVs) play a critical role in the transition to transportation electrification and are important for achieving carbon neutrality in this sector. China currently leads the world in EV ownership; however, the energy regulation potential of in-use batteries remains largely untapped …

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First‐Principles Study on Lattice Structures and Electronic Properties of Li 10 SnP 2 S 12 /Li 2 S Interface

Qingshan Zhao, Cheng‐Dong Wei, Yajian Hu, Hongtao Xue et autres

Utilizing density functional theory, this study employed first‐principles calculations to thoroughly examine the interfacial architecture and electrical properties between Li 10 SnP 2 S 12 , a solid electrolyte, and Li 2 S, the cathode material, in all‐solid‐state lithium‐sulfur batteries. The interface …

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Magnetotransport evidence of a potential low-lying Dirac node in NbAl 3

Ying Kit Tsui, Chia‐Nung Kuo, Makoto Shimizu, Yajian Hu et autres

${\mathrm{NbAl}}_{3}$ is a novel semimetal with a type-II Dirac node $\ensuremath{\sim}230$ meV above the Fermi energy. We have performed both out-of-plane ($B\ensuremath{\parallel}c$) and in-plane magnetotransport measurements ($B\ensuremath{\perp}c$) on single-crystalline ${\mathrm{NbAl}}_{3}$. In our out-of-plane data, we observe an interesting linear component in the …

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Driving Towards Sustainability: V2G Technology and Future Prospects

Yajian Hu, Richao Cong, Toru Matsumoto

As the number of renewable energy sources connected to the grid and electricity demand grows, the electricity system faces unprecedented stability challenges as it responds to carbon neutrality policies. Vehicle-to-grid (V2G), as an emerging technology, can alleviate the stability problems caused by …

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Inline evaluation of MOS capacitor properties using SEM transient signals

Yasuhiro Shirasaki, Kazufumi Yachi, Yajian Hu, Minami Shoji et autres

Strongly enhanced shift current at exciton resonances in a noncentrosymmetric wide-gap semiconductor

Masao Nakamura, Yang‐Hao Chan, Takahiro Yasunami, Y.S. Huang et autres

Excitons are fundamental quasiparticles that are ubiquitous in photoexcited semiconductors and insulators. Despite causing a sharp and strong photoabsorption near the interband absorption edge, charge-neutral excitons do not yield photocurrent in conventional photovoltaic processes unless dissociated into free charge carriers. Here, we …

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Violation of emergent rotational symmetry in the hexagonal Kagome superconductor CsV3Sb5

Kazumi Fukushima, Keito Obata, Soichiro Yamane, Yajian Hu et autres

Abstract Superconductivity is caused by electron pairs that are canonically isotropic, whereas some exotic superconductors are known to exhibit non-trivial anisotropy stemming from unconventional pairings. However, superconductors with hexagonal symmetry, the highest rotational symmetry allowed in crystals, exceptionally have strong constraint that …

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Violation of Emergent Rotational Symmetry in the Hexagonal Kagome Superconductor CsV3Sb5

Kazumi Fukushima, Keito Obata, Soichiro Yamane, Yajian Hu et autres

Superconductivity is caused by electron pairs that are canonically isotropic, whereas some exotic superconductors are known to exhibit non-trivial anisotropy stemming from unconventional pairings. However, superconductors with hexagonal symmetry, the highest rotational symmetry allowed in crystals, exceptionally have strong constraint that is …

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Quasi-two-dimensional Fermi surface of superconducting line-nodal metal CaSb2

Atsutoshi Ikeda, Shanta Ranjan Saha, David E Graf, Prathum Saraf et autres

We report on the Fermi surfaces and superconducting parameters of ${\text{CaSb}}_{2}$ single crystals (superconducting below ${T}_{\text{c}}\ensuremath{\sim}1.8\phantom{\rule{0.16em}{0ex}}\mathrm{K}$) grown by the self-flux method. The frequency of de Haas--van Alphen and Shubnikov--de Haas oscillations evidences a quasi-two-dimensional (quasi-2D) Fermi surface, consistent with one of the …

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