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Journal Articles

Incommensurate antiferromagnetism with amplitude modulation in the semiconducting $$5f$$ van der Waals magnet $$alpha$$-UTe$$_3$$

Sakai, Hironori; Tabata, Chihiro; Kaneko, Koji; Tokiwa, Yoshifumi; Kitazawa, Takafumi; Kambe, Shinsaku*; Tokunaga, Yo; Haga, Yoshinori

Physical Review B, 114(8), p.L080402_1 - L080402_6, 2026/08

https://doi.org/10.1103/jls4-6s89
 Times Cited Count：1

$$alpha$$-UTe$$_3$$, a van der Waals (vdW) actinide compound with a monoclinic ZrSe$$_3$$-type structure, is a narrow-gap semiconductor with $$5f$$ moments. $$^{125}$$Te NMR reveals strongly anisotropic, layer-confined spin fluctuations below 20 K, with the $$a$$-axis component enhanced, and a signal wipeout at the antiferromagnetic (AFM) transition $$T_{rm N} = 5$$ K. Single-crystal neutron diffraction finds $$mathbf{q} simeq (0.17, 0.5, 0)$$ and a longitudinal sinusoidal modulation of $$a$$-axis moments with an amplitude of $$simeq 0.8~mu_{rm B}$$ and AFM stacking along $$b$$. A CEF singlet-singlet induced-moment framework accounts for the easy-axis anisotropy, the small heat-capacity anomaly at $$T_{rm N}$$, the reduced ordered moment, and the exchange-driven selection of $$mathbf{q}$$ in this localized $$5f$$ vdW magnet, establishing a constrained exchange geometry that stabilizes this in-plane incommensurate state.

Journal Articles

Noncollinear spin order, field-induced transitions, and short-range correlations in Cu$$_4$$SO$$_4$$(OH)$$_6$$

Prokhnenko, O.*; Kaneko, Koji; Tabata, Chihiro; Akaki, Mitsuru*; Lee, C.*; Yamanaka, Takayoshi*; Sakai, Hironori; Hirose, Yusuke; Gazizulina, A.*; Tokiwa, Yoshifumi; et al.

Physical Review B, 114(1), p.014414_1 - 014414_13, 2026/07

https://doi.org/10.1103/l362-1h1r
 Times Cited Count：0 Percentile：0.00(Materials Science, Multidisciplinary)

Journal Articles

Local electronic structure and dynamics of hydrogen in CeO$$_2$$

Koda, Akihiro*; Ito, Takashi; Hiraishi, Masatoshi*; Okabe, Hirotaka*; Kadono, Ryosuke*

Physical Review B, 114(2), p.L020101_1 - L020101_7, 2026/07

https://doi.org/10.1103/wg52-7mdg
 Times Cited Count：0 Percentile：0.00(Materials Science, Multidisciplinary)

Journal Articles

Quantum spin liquid ground state with the evidence of roton-like excitations at elevated temperatures in the triangular-lattice delafossite YbCuSe$$_2$$

Bhattacharya, K.*; Tokiwa, Yoshifumi; Majumder, M.*

Physical Review B, 113(22), p.L220407_1 - L220407_8, 2026/06

https://doi.org/10.1103/3ft3-72ll
 Times Cited Count：1 Percentile：78.36(Materials Science, Multidisciplinary)

We present a comprehensive experimental investigation of the temperature evolution of magnetic states in the triangular-lattice delafossite YbCuSe$$_2$$. Magnetization measurements on high-quality single crystals reveal easy-plane anisotropy. Specific heat, magnetization, and muon spin relaxation ($$mu$$SR) measurements establish the absence of magnetic order or spin freezing down to 0.03~K ($$lesssim J_{rm avg}/250$$), demonstrating a dynamically fluctuating quantum spin liquid (QSL) ground state. Thermodynamic measurements uncover multiple characteristic energy scales at $$T_{rm H}approx4.5$$~K, $$T_{rm L}approx1.8$$~K, and $$T^{*}approx0.7$$~K. Below $$T^{*}$$, $$mu$$SR detects a dynamical phase separation in which the majority of the spins form a QSL state, while the remaining spins constitute a sporadic, disorder-induced state decoupled from the dominant QSL component. Remarkably, the unconventional temperature dependence of the $$mu$$SR relaxation rate indicates the emergence of roton-like excitations between $$T_{rm H}$$ and $$T_{rm L}$$, a feature not previously observed in any QSL system, preceding the stabilization of the low-temperature QSL below 0.3~K. These findings identify YbCuSe$$_2$$ as a unique QSL platform, providing valuable insights for further experimental and theoretical exploration.

Journal Articles

Experimental observation of 5f valence fluctuations by high-resolution X-ray absorption spectroscopy in UPd$$_{2}$$Cd$$_{20}$$

Hirose, Yusuke; Honda, Fuminori*; Doto, Hiroshi*; Kawamura, Naomi*; Kvashnina, K. O.*; Amidani, L.*; Uhl$'i$$v{r}$ov$'a$, K.*; Koloren$v{c}$, J.*; Havela, L.*

Physical Review B, 113(24), p.L241103_1 - L241103_6, 2026/06

https://doi.org/10.1103/g9y8-7lq9
 Times Cited Count：1 Percentile：78.36(Materials Science, Multidisciplinary)

Journal Articles

Sommerfeld coefficient enhancement and magnetic short-range order in a hyperkagome 3$$d$$ electron system

Shamoto, Shinichi*; Yasui, Yukio*; Yoshizawa, Kanako*; Noda, Yukio*; Takahashi, Miwako*; Onuki, Yoshichika*; Haga, Yoshinori; Ishikado, Motoyuki*; Yamauchi, Hiroki; Huang, T.-C.*; et al.

Physical Review B, 113(23), p.235126_1 - 235126_7, 2026/06

https://doi.org/10.1103/m5pw-ghz3
 Times Cited Count：0 Percentile：0.00(Materials Science, Multidisciplinary)

Journal Articles

Design of a storage ring based on a fixed-field alternating-gradient configuration with an internal target for heavy-ion beams with stochastic charge state conversions

Ishi, Yoshihiro*; Uesugi, Tomonori*; Mori, Yoshiharu*; Nishio, Katsuhisa

Physical Review Accelerators and Beams (Internet), 29(5), p.050101_1 - 050101_14, 2026/05

https://doi.org/10.1103/th5l-mq3q
 Times Cited Count：0 Percentile：0.00(Physics, Nuclear)

Journal Articles

$$3mathbf{Q}$$ magnetic order with spatially alternating spin scalar chirality in overdoped Co$$_{0.336}$$TaS$$_{2}$$

Cho, W.*; Park, P.*; Kim, C.*; An, Y.*; Iida, Kazuki*; Kajimoto, Ryoichi; Matin, S.*; Sibille, R.*; Crooker, S. A.*; Park, J.-G.*

Physical Review B, 113(17), p.174410_1 - 174410_14, 2026/05

https://doi.org/10.1103/d2yy-ntns
 Times Cited Count：0 Percentile：0.00(Materials Science, Multidisciplinary)

Journal Articles

Single-crystal neutron diffraction study of the insulating phase in NdBaMn$$_{2}$$O$$_{6}$$

Yamada, Shigeki*; Kiyanagi, Ryoji; Nakao, Akiko*; Sagayama, Hajime*; Arima, Takahisa*

Physical Review B, 113(20), p.205142_1 - 205142_9, 2026/05

https://doi.org/10.1103/y4sd-sl69
 Times Cited Count：1 Percentile：78.36(Materials Science, Multidisciplinary)

Journal Articles

Large spontaneous Hall effect arising from collinear antiferromagnetism in Ce$$_{2}$$PtGe$$_{6}$$

Matsuda, Hayata*; Hibino, Ruo*; Tabata, Chihiro; Kaneko, Koji; Higa, Nonoka*; Onimaru, Takahiro*; Tanaka, Hiroto*; To, Hideki*; Sugawara, Hitoshi*; Hayashi, Junichi*; et al.

Physical Review B, 113(19), p.195116_1 - 195116_8, 2026/05

https://doi.org/10.1103/4x23-wbc6
 Times Cited Count：0 Percentile：0.00(Materials Science, Multidisciplinary)

Journal Articles

Spontaneous magnetization curve of $$alpha$$-iron at high pressures determined using ${it in situ}$ neutron diffraction

Aoki, Katsutoshi*; Takano, Masahiro*; Fukuyama, Ko*; Kagi, Hiroyuki*; Machida, Akihiko*; Saito, Hiroyuki*; Hattori, Takanori; Sano, Asami; Funakoshi, Kenichi*

Physical Review B, 113(18), p.184440_1 - 184440_6, 2026/05

https://doi.org/10.1103/vdnz-y1nk
 Times Cited Count：1 Percentile：78.36(Materials Science, Multidisciplinary)

The temperature dependence of the magnetic moment of bcc $$alpha$$-iron was investigated over the range 300-950 K at pressures of approximately 2 and 6 GPa by ${it in situ}$ neutron powder diffraction. The $$^{54}$$Fe isotope, whose neutron scattering length is approximately half that of naturally abundant Fe, was employed to enhance the relative contribution of magnetic scattering. Curie temperatures ($$T_{rm{C}}$$) were determined to be 946(30) K, 838(50) K and 740(40) K at 2.1, 6.0 and 6.7 GPa, respectively, defining a magnetic phase boundary described by $$T_{rm{C}}$$(K) = 1043 - 49(7)$$P$$ + 1.3(1.2)$$P^2$$. Upon heating at 6.7 GPa, the $$alpha-gamma$$ structural transition was observed to follow the magnetic transition. This transition sequence indicates that the magnetic phase boundary lies on the low-temperature side of the $$alpha-gamma$$ phase boundary. Accordingly, the $$alpha-gamma$$ transition corresponds to a structural transformation from paramagnetic bcc to paramagnetic fcc iron.

Journal Articles

Paramagnetic state of the kagome Kondo lattice compound YbV$$_6$$Sn$$_6$$; A $$^{51}$$V nuclear magnetic resonance study

Park, S.*; Sakai, Hironori; Hosoi, Suguru*; Thomas, S. M.*; Kambe, Shinsaku*; Tokunaga, Yo; Dioguardi, A. P.*; Thompson, J. D.*; Ronning, F.*; Kimata, Motoi; et al.

Physical Review B, 113(15), p.155107_1 - 155107_9, 2026/04

https://doi.org/10.1103/6789-mw95
 Times Cited Count：0 Percentile：0.00(Materials Science, Multidisciplinary)

YbV$$_6$$Sn$$_6$$ is a Kondo lattice compound with a layered structure composed of a triangular lattice of Yb$$^{3+}$$ ions and a vanadium-based kagome network, and it orders antiferromagnetically at $$T_{rm N}approx 0.4$$ K. We performed a $$^{51}$$V-NMR study of its paramagnetic state. The field-angular dependence of single-crystal NMR spectra allowed us to determine the principal axes of the electric field gradient tensor, the quadrupole frequency $$nu_{rm Q}$$, and the asymmetry parameter $$eta$$ at the $$^{51}$$V sites. Knight-shift and susceptibility analyses revealed anisotropic hyperfine couplings, while the spin-lattice relaxation rate $$1/T_1$$ showed enhanced low-energy spin fluctuations below $$sim20$$~K with strong in-plane anisotropy. A further field-tunable enhancement below $$sim10$$~K suggests proximity to the very-low-temperature antiferromagnetic instability.

Journal Articles

Josephson diode effect via a nonequilibrium Rashba system

Mori, Michiyasu; Koshibae, Wataru*; Maekawa, Sadamichi*

Physical Review B, 113(13), p.134505_1 - 134505_8, 2026/04

https://doi.org/10.1103/nt1m-5sff
 Times Cited Count：0 Percentile：0.00(Materials Science, Multidisciplinary)

Journal Articles

Spin-wave resonance in yttrium iron garnet stripe domains

Prestwood, D.*; Kikkawa, Takashi; Saito, Eiji; 15 of others*

Physical Review B, 113(13), p.134410_1 - 134410_12, 2026/04

https://doi.org/10.1103/c721-178b
 Times Cited Count：2 Percentile：78.36(Materials Science, Multidisciplinary)

Journal Articles

Three-dimensional spin susceptibility in $${mathrm{Ba}}_{0.75}{mathrm{K}}_{0.25}{mathrm{Fe}}_{2}{mathrm{As}}_{2}$$; Out-of-plane modulation revealed by neutron spectroscopy and theoretical modeling

Murai, Naoki; Suzuki, Katsuhiro*; Nakajima, Masamichi*; Kofu, Maiko*; Kawamura, Seiko; Inamura, Yasuhiro; Kajimoto, Ryoichi

Physical Review B, 113(13), p.134430_1 - 134430_12, 2026/04

https://doi.org/10.1103/w1lf-837b
 Times Cited Count：0 Percentile：0.00(Materials Science, Multidisciplinary)

We investigated the three-dimensional nature of spin fluctuations in the iron-based superconductor $${mathrm{Ba}}_{0.75}{mathrm{K}}_{0.25}{mathrm{Fe}}_{2}{mathrm{As}}_{2}$$ by combining time-of-flight inelastic neutron scattering with DFT-based theoretical modeling. The neutron measurements revealed a clear out-of-plane modulation of the low-energy magnetic intensity, with maxima at odd $$L$$ positions, indicating robust antiferromagnetic correlations along the $$c$$ axis. With increasing energy, this modulation gradually disappears, signaling a crossover from three-dimensional to nearly two-dimensional spin dynamics. Calculations based on a realistic three-dimensional electronic structure reproduce both the low-energy $$L$$ modulation and its energy-dependent suppression. Our itinerant approach, built on a material-specific DFT-derived band structure, captures this three-dimensional-to-two-dimensional crossover without phenomenological tuning, thereby providing a stringent benchmark for realistic electronic-structure models of iron-based superconductors.

Journal Articles

Possibility of ferro-octupolar order in Ba$$_2$$CaOsO$$_6$$ assessed by X-ray magnetic dichroism measurements

Shibata, Goro; Fujimori, Atsushi; 10 of others*

Physical Review B, 113(16), p.165151_1 - 165151_7, 2026/04

https://doi.org/10.1103/mh1b-q11n
 Times Cited Count：1 Percentile：0.00(Materials Science, Multidisciplinary)

Journal Articles

Field-induced antiferromagnetic transition in CeIrIn$$_5$$

Tokunaga, Yo; Suzuki, Michito*; Kr$"a$mer, S.*; Sakai, Hironori; Kambe, Shinsaku; Harima, Hisatomo*; Aoki, Dai*; Horvati$'c$, M.*; Sheikin, I.*

Physical Review B, 113(14), p.L140406_1 - L140406_7, 2026/04

https://doi.org/10.1103/8khb-593t
 Times Cited Count：0 Percentile：0.00(Materials Science, Multidisciplinary)

Journal Articles

Orbital angular momentum of azimuthal spin waves

Valet, T.*; Yamamoto, Kei; Pigeau, B.*; de Loubens, G.*; Klein, O.*

Physical Review B, 113(10), p.L100410_1 - L100410_6, 2026/03

https://doi.org/10.1103/l1x7-t8pn
 Times Cited Count：0 Percentile：0.00(Materials Science, Multidisciplinary)

Journal Articles

Intimate relationship between spin configuration in the triplet pair and superconductivity in UTe$$_2$$

Matsumura, Hiroki*; Tokunaga, Yo; Sakai, Hironori; Kambe, Shinsaku; Kimata, Motoi; 14 of others*

Physical Review B, 113(9), p.094506_1 - 094506_12, 2026/03

https://doi.org/10.1103/xr3p-cxbt
 Times Cited Count：0 Percentile：0.00(Materials Science, Multidisciplinary)

Journal Articles

Field theory of linear spin waves in finite textured ferromagnets

Valet, T.*; Yamamoto, Kei; Pigeau, B.*; de Loubens, G.*; Klein, O.*

Physical Review B, 113(10), p.104437_1 - 104437_17, 2026/03

https://doi.org/10.1103/qyr8-9817
 Times Cited Count：0 Percentile：0.00(Materials Science, Multidisciplinary)

878 (Records 1-20 displayed on this page)