Search Results - "Kohama, Yoshimitsu"
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High-Field Calorimetric Studies on Low-Dimensional and Frustrated Quantum Magnets
Published in Journal of the Physical Society of Japan (15-10-2022)“…Significant advances in the experimentally measuring high-field entropy have been made over the last three decades, which have improved our knowledge of…”
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Possible observation of quantum spin-nematic phase in a frustrated magnet
Published in Proceedings of the National Academy of Sciences - PNAS (28-05-2019)“…Water freezes into ice in winter and evaporates into vapor in summer. Scientifically, the transformations between solid, liquid, and gas are called phase…”
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Superconductivity protected by spin–valley locking in ion-gated MoS2
Published in Nature physics (07-12-2015)“…The electric-field-induced superconducting properties of MoS 2 are investigated by means of magneto-transport measurements, uncovering evidence of…”
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Emergent anisotropy in the Fulde–Ferrell–Larkin–Ovchinnikov state
Published in Nature communications (03-10-2022)“…Exotic superconductivity is formed by unconventional electron pairing and exhibits various unique properties that cannot be explained by the basic theory. The…”
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Correlation-driven organic 3D topological insulator with relativistic fermions
Published in Nature communications (20-04-2023)“…Exploring new topological phenomena and functionalities induced by strong electron correlation has been a central issue in modern condensed-matter physics. One…”
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Strain-induced spontaneous Hall effect in an epitaxial thin film of a Luttinger semimetal
Published in Proceedings of the National Academy of Sciences - PNAS (30-04-2019)“…Pyrochlore iridates have provided a plethora of novel phenomena owing to the combination of topology and correlation. Among them, much attention has been paid…”
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7
Intrinsic 2D Ferromagnetism in V5Se8 Epitaxial Thin Films
Published in Nano letters (11-12-2019)“…The discoveries of intrinsic ferromagnetism in atomically thin van der Waals crystals have opened a new research field enabling fundamental studies on…”
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Evidence for large thermodynamic signatures of in-gap fermionic quasiparticle states in a Kondo insulator
Published in Nature communications (12-09-2024)“…The mixed-valence compound YbB 12 displays paradoxical quantum oscillations in electrical resistivity and magnetic torque in a regime with a well-developed…”
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Unveiling the double-peak structure of quantum oscillations in the specific heat
Published in Nature communications (08-11-2023)“…Quantum oscillation phenomenon is an essential tool to understand the electronic structure of quantum matter. Here we report a systematic study of quantum…”
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10
Quantum transport evidence of isolated topological nodal-line fermions
Published in Nature communications (23-11-2022)“…Anomalous transport responses, dictated by the nontrivial band topology, are the key for application of topological materials to advanced electronics and…”
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Fermi surface reconstruction and multiple quantum phase transitions in the antiferromagnet CeRhIn5
Published in Proceedings of the National Academy of Sciences - PNAS (20-01-2015)“…Conventional, thermally driven continuous phase transitions are described by universal critical behavior that is independent of the specific microscopic…”
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Broad Tunability of Carrier Effective Masses in Two-Dimensional Halide Perovskites
Published in ACS energy letters (13-11-2020)“…The effective mass of charge carriers is a crucial parameter for the design of any optoelectronic device. The estimated values of the effective mass of 2D…”
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13
Wide Critical Fluctuations of the Field-Induced Phase Transition in Graphite
Published in Physical review letters (12-03-2021)“…In the immediate vicinity of the critical temperature (T_{c}) of a phase transition, there are fluctuations of the order parameter that reside beyond the…”
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14
Emergence of Frustrated Short-Range Order above Long-Range Order in the S = 1/2 Kagome Antiferromagnet CaCu3(OD)6Cl2∙0.6D2O
Published in Journal of the Physical Society of Japan (15-02-2021)“…We report on the low-energy dynamics in the kagome antiferromagnet CaCu3(OD)6Cl2∙0.6D2O (Ca-kapellasite) as studied by use of 2D-NMR measurements. Previous…”
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15
Ferroelectric Transition of a Chiral Molecular Crystal BINOL∙2DMSO
Published in Journal of the Physical Society of Japan (15-06-2022)“…We report dielectric, thermodynamical, acoustic, and optical properties of a chiral molecular crystal, 1,1′-bi-2-naphthol 2-dimethylsulfoxide (BINOL∙2DMSO). We…”
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High-mobility two-dimensional carriers from surface Fermi arcs in magnetic Weyl semimetal films
Published in npj quantum materials (07-10-2022)“…High-mobility two-dimensional carriers originating from surface Fermi arcs in magnetic Weyl semimetals are highly desired for accessing exotic quantum…”
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17
Anisotropy of the Upper Critical Field in a Co-Doped BaFe2As2 Single Crystal
Published in Journal of the Physical Society of Japan (01-01-2009)“…The temperature dependence of the upper critical magnetic field (Hc2) in a BaFe1.84Co0.16As2 single crystal was determined via resistivity, for the inter-plane…”
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Tunable Berry curvature and transport crossover in topological Dirac semimetal KZnBi
Published in npj quantum materials (10-09-2021)“…Topological Dirac semimetals have emerged as a platform to engineer Berry curvature with time-reversal symmetry breaking, which allows to access diverse…”
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Strain engineering of the magnetic multipole moments and anomalous Hall effect in pyrochlore iridate thin films
Published in Science advances (01-07-2020)“…Strain-engineered magnetic multipole moments can generate novel anomalous Hall effect in antiferromagnetic oxide thin films. The recent observation of the…”
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Crystal-field Paschen-Back effect on ruby in ultrahigh magnetic fields
Published in Physical review research (17-08-2020)“…Zeeman spectra of the R lines of ruby (Cr^{3+}: α-Al_{2}O_{3}) were studied in ultrahigh magnetic fields up to 230 T by magnetophotoluminescence measurements…”
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