Daichi Ueta
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View article: Zero-point entropies of spin-jam and spin-glass states in a frustrated magnet
Zero-point entropies of spin-jam and spin-glass states in a frustrated magnet Open
Thermodynamics studies of a prototypical quasi-two-dimensional frustrated magnet, ${\mathrm{Ba}}_{2}{\mathrm{Sn}}_{2}{\mathrm{ZnCr}}_{7p}{\mathrm{Ga}}_{10\ensuremath{-}7p}{\mathrm{O}}_{22}$, where the magnetic ${\mathrm{Cr}}^{3+}$ ions are…
View article: Zero-point entropies of spin-jam and spin-glass states in a frustrated magnet
Zero-point entropies of spin-jam and spin-glass states in a frustrated magnet Open
Thermodynamics studies of a prototypical quasi-two-dimensional frustrated magnet Ba$_2$Sn$_2$ZnCr$_{7p}$Ga$_{10-7p}$O$_{22}$ where the magnetic Cr$^{3+}$ ions are arranged in a triangular network of bipyramids show that the magnetic zero-p…
View article: Oval-cycloidal Magnetic Structure with Phase-shift in the Non-centrosymmetric Tetragonal Compound CePdSi<sub>3</sub>
Oval-cycloidal Magnetic Structure with Phase-shift in the Non-centrosymmetric Tetragonal Compound CePdSi<sub>3</sub> Open
CePdSi3 with H // [100] exhibits multiple metamagnetic transitions. Since there is no frustration in this system, it is suggested that the origin of the multiple metamagnetic transitions is the influence of the antisymmetric spin–orbit int…
View article: Shubnikov-de-Haas oscillation and possible modification of effective mass in CeTe3 thin films
Shubnikov-de-Haas oscillation and possible modification of effective mass in CeTe3 thin films Open
Magnetoresistance measurements have been performed in CeTe3 thin film devices in a temperature range from 2.1 to 20 K up to 8 T. A clear Shubnikov-de-Haas oscillation was observed in the whole temperature range. The temperature dependence …
View article: Quantum oscillations with magnetic hysteresis observed in CeTe3 thin films
Quantum oscillations with magnetic hysteresis observed in CeTe3 thin films Open
We have performed magnetotransport measurements in CeTe3 thin films down to 0.2 K. It is known that CeTe3 has two magnetic transitions at TN1≈3 K and TN2≈1 K. A clear Shubnikov–de-Haas (SdH) oscillation was observed at 4 K, demonstrating t…
View article: Crystal Structure and Magnetic Properties of the Breathing Kagome Ising Antiferromagnet Yb<sub>3</sub>Ni<sub>11</sub>Ge<sub>4.63</sub>
Crystal Structure and Magnetic Properties of the Breathing Kagome Ising Antiferromagnet Yb<sub>3</sub>Ni<sub>11</sub>Ge<sub>4.63</sub> Open
We have investigated magnetic properties of the rare-earth based intermetallic compound Yb3Ni11Ge4.63 (YNG), where Yb3+ ions form a breathing-kagome lattice. Single-site 4f electron wavefunctions of the ground-state doublet are deduced fro…
View article: Fermionic Order by Disorder in a van der Waals Antiferromagnet
Fermionic Order by Disorder in a van der Waals Antiferromagnet Open
CeTe3 is a unique platform to investigate the itinerant magnetism in a van der Waals (vdW) coupled metal. Despite chemical pressure being a promising route to boost quantum fluctuation in this system, a systematic study on the chemical pre…
View article: Quantum oscillations with magnetic hysteresis observed in CeTe$_{3}$ thin films
Quantum oscillations with magnetic hysteresis observed in CeTe$_{3}$ thin films Open
We have performed magnetotransport measurements in CeTe$_{3}$ thin films down to $0.2~{\rm K}$. It is known that CeTe$_{3}$ has two magnetic transitions at $T_{\rm N1} \approx 3~{\rm K}$ and $T_{\rm N2} \approx 1~{\rm K}$. A clear Shubniko…
View article: Magnetic structure of a non-centrosymmetric CePtSi3
Magnetic structure of a non-centrosymmetric CePtSi3 Open
Neutron diffraction experiments have been performed on single crystalline samples of CePtSi3. We found that the incommensurate magnetic propagation vector τ1 = (±0.283, 0, 0) in the phase I (2.2 ∼ 4.8 K) switches to the commensurate vector…
View article: Anisotropic Pressure Effects on Superconductivity in Fe<sub>1+</sub><i><sub>y</sub></i>Te<sub>1−</sub><i><sub>x</sub></i>S<i><sub>x</sub></i>
Anisotropic Pressure Effects on Superconductivity in Fe<sub>1+</sub><i><sub>y</sub></i>Te<sub>1−</sub><i><sub>x</sub></i>S<i><sub>x</sub></i> Open
We have investigated uniaxial and hydrostatic pressure effects on\nsuperconductivity in Fe1.07Te0.88S0.12 through magnetic-susceptibility\nmeasurements down to 1.8 K. The superconducting transition temperature Tc is\nenhanced by out-of-pla…