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Journal Articles

Large spin Hall effect in high-entropy alloy/CoFeB bilayers

Kubota, Takahide*; Suzuki, Kazuya; Hirayama, Yoshiyuki*; Takahashi, Shigeki*; Takanashi, Koki

Physical Review Materials (Internet), 9(8), p.084408_1 - 084408_7, 2025/08

https://doi.org/10.1103/lxdl-wmnv

Journal Articles

Physical properties of intergrowth compound Eu$$_{2}$$CuZn$$_{2}$$P$$_{3}$$

May, A. F.*; Tabata, Chihiro; Okamoto, Satoshi*; Ortiz, B. R.*; Christianson, A. D.*; Yan, J.*; Kaneko, Koji; McGuire, M. A.*

Physical Review Materials (Internet), 9(2), p.024406_1 - 024406_13, 2025/02

https://doi.org/10.1103/PhysRevMaterials.9.024406
 Times Cited Count：3 Percentile：90.20(Materials Science, Multidisciplinary)

Journal Articles

Possible field-induced quantum state in a rhombic lattice antiferromagnet KCoPO$$_{4}$$$$cdot$$H$$_{2}$$O

Fujihara, Masayoshi; Hagihara, Masato; Koda, Akihiro*; Nakamura, Jumpei*; Matsuo, Akira*; Kindo, Koichi*; Ishikado, Motoyuki*

Physical Review Materials (Internet), 9(1), p.014406_1 - 014406_9, 2025/01

https://doi.org/10.1103/PhysRevMaterials.9.014406
 Times Cited Count：1 Percentile：64.72(Materials Science, Multidisciplinary)

Journal Articles

Surface structure of the 3$$times$$3-Si phase on Al(111), studied by the multiple usages of positron diffraction and core-level photoemission spectroscopy

Sato, Yusuke*; Fukaya, Yuki; 14 of others*

Physical Review Materials (Internet), 9(1), p.014002_1 - 014002_11, 2025/01

https://doi.org/10.1103/PhysRevMaterials.9.014002
 Times Cited Count：0 Percentile：0.00(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Magnetic excitations in the noncentrosymmetric magnet Sr$$_{2}$$MnSi$$_{2}$$O$$_{7}$$

Kawamata, Masahiro*; Pang, X.*; Murakawa, Hiroshi*; Kawamura, Seiko; Nakajima, Kenji; Masuda, Hidetoshi*; Fujita, Masaki*; Hanasaki, Noriaki*; Onose, Yoshinori*; Nambu, Yusuke*

Physical Review Materials (Internet), 9(1), p.014407_1 - 014407_6, 2025/01

https://doi.org/10.1103/PhysRevMaterials.9.014407
 Times Cited Count：1 Percentile：64.72(Materials Science, Multidisciplinary)

Journal Articles

Continuous structural phase transition and antiferromagnetic order in ilmenite-type NiVO$$_{3}$$

Yamamoto, Hajime*; Ikeda, Osamu*; Honda, Takashi*; Kimura, Kenta*; Aoyama, Takuya*; Ogushi, Kenya*; Suzuki, Akio*; Ishii, Kenji*; Matsumura, Daiju; Tsuji, Takuya; et al.

Physical Review Materials (Internet), 8(9), p.094402_1 - 094402_6, 2024/09

https://doi.org/10.1103/PhysRevMaterials.8.094402
 Times Cited Count：3 Percentile：47.67(Materials Science, Multidisciplinary)

Journal Articles

Dramatic elastic response at the critical end point in UTe$$_2$$

Vali$v{s}$ka, M.*; Haidamak, T.*; Cabala, A.*; Posp$'i$$v{s}$il, J.*; Bastien, G.*; Sechovsk$'y$, V.*; Prokle$v{s}$ka, J.*; Yanagisawa, Tatsuya*; Opletal, P.; Sakai, Hironori; et al.

Physical Review Materials (Internet), 8(9), p.094415_1 - 094415_9, 2024/09

https://doi.org/10.1103/PhysRevMaterials.8.094415
 Times Cited Count：2 Percentile：34.28(Materials Science, Multidisciplinary)

Journal Articles

Tuning of spin-orbit coupling in chiral molecule-incorporated two-dimensional organic-inorganic hybrid perovskite copper halides with ferromagnetic exchange interactions

Taniguchi, Koji*; Huang, P.-J.*; Sagayama, Hajime*; Kiyanagi, Ryoji; Oishi, Kazuki*; Kito, Shunsuke*; Nakamura, Yuiga*; Miyasaka, Hitoshi*

Physical Review Materials (Internet), 8(2), p.024409_1 - 024409_10, 2024/02

https://doi.org/10.1103/PhysRevMaterials.8.024409
 Times Cited Count：4 Percentile：57.98(Materials Science, Multidisciplinary)

Journal Articles

Local atomic structures and lattice dynamics of inverse colossal barocaloric ammonium thiocyanate

Zhang, Z.*; Gong, W.; Kawakita, Yukinobu; 9 of others*

Physical Review Materials (Internet), 7(12), p.125402_1 - 125402_9, 2023/12

https://doi.org/10.1103/PhysRevMaterials.7.125402
 Times Cited Count：2 Percentile：15.94(Materials Science, Multidisciplinary)

Journal Articles

Effect of Mn substitution on the electronic structure for Mn-doped indium-tin oxide films studied by soft and hard X-ray photoemission spectroscopy

Otsuki, Daiki*; Ishida, Tatsuhiro*; Tsutsumi, Naoya*; Kobayashi, Masaki*; Inagaki, Kodai*; Yoshida, Teppei*; Takeda, Yukiharu; Fujimori, Shinichi; Yasui, Akira*; Kitagawa, Saiki*; et al.

Physical Review Materials (Internet), 7(12), p.124601_1 - 124601_6, 2023/12

https://doi.org/10.1103/PhysRevMaterials.7.124601
 Times Cited Count：2 Percentile：15.94(Materials Science, Multidisciplinary)

Journal Articles

Controlling dual Mott states by hydrogen doping to perovskite rare-earth nickelates

Matsuzawa, Ikuya*; Fukutani, Katsuyuki; 5 of others*

Physical Review Materials (Internet), 7(8), p.085003_1 - 085003_6, 2023/08

https://doi.org/10.1103/PhysRevMaterials.7.085003
 Times Cited Count：10 Percentile：66.09(Materials Science, Multidisciplinary)

Journal Articles

Dynamic interaction between dislocations and obstacles in BCC iron based on atomic potentials derived using neural networks

Mori, Hideki*; Tsuru, Tomohito; Okumura, Masahiko; Matsunaka, Daisuke*; Shiihara, Yoshinori*; Itakura, Mitsuhiro

Physical Review Materials (Internet), 7(6), p.063605_1 - 063605_8, 2023/06

https://doi.org/10.1103/PhysRevMaterials.7.063605
 Times Cited Count：3 Percentile：24.81(Materials Science, Multidisciplinary)

The introduction of obstacles (e.g., precipitates) for controlling dislocation motion in molecular structures is a prevalent method for designing the mechanical strength of metals. Owing to the nanoscale size of the dislocation core ($$leq$$ 1 nm), atomic modeling is required to investigate the interactions between the dislocation and obstacles. However, conventional empirical potentials are not adequately accurate, in contrast to the calculations based on density functional theory (DFT). Therefore, the atomic-level details of the interactions between the dislocations and obstacles remain unclarified. To this end, this study applied an artificial neural network (ANN) framework to construct an atomic potential by leveraging the high accuracy of DFT. Using the constructed ANN potential, we investigated the dynamic interaction between the $$(a_0/2){110}$$ edge dislocation and obstacles in BCC iron. When the dislocation crossed the void, an ultrasmooth and symmetric half-loop was observed for the bowing-out dislocation. Except for the screw dislocation, the Peierls stress of all the dislocations predicted using the ANN was less than 100 MPa. More importantly, the results confirmed the formation of an Orowan loop in the interaction between a rigid sphere and dislocation. Furthermore, we discovered a phenomenon in which the Orowan loop disintegrated into two small loops during its interaction with the rigid sphere and dislocation.

Journal Articles

Origin of magnetically dead layers in spinel ferrites $$M$$Fe$$_2$$O$$_4$$ grown on Al$$_2$$O$$_3$$; Effects of postdeposition annealing studied by XMCD

Nonaka, Yosuke*; Wakabayashi, Yuki*; Shibata, Goro; Sakamoto, Shoya*; Ikeda, Keisuke*; Chi, Z.*; Wan, Y.*; Suzuki, Masahiro*; Tanaka, Arata*; Tanaka, Masaaki*; et al.

Physical Review Materials (Internet), 7(4), p.044413_1 - 044413_10, 2023/04

https://doi.org/10.1103/PhysRevMaterials.7.044413
 Times Cited Count：5 Percentile：40.70(Materials Science, Multidisciplinary)

Journal Articles

Incommensurate helimagnetic structure of Ba(Fe$$_{1-x}$$Sc$$_{x}$$)$$_{12}$$O$$_{19}$$ determined by single-crystal neutron diffraction

Tanaka, Seiya*; Kiyanagi, Ryoji; Ishikawa, Yoshihisa*; Amako, Yasushi*; Iiyama, Taku*; Futamura, Ryusuke*; Maruyama, Kenichi*; Utsumi, Shigenori*

Physical Review Materials (Internet), 7(1), p.014403_1 - 014403_11, 2023/01

https://doi.org/10.1103/PhysRevMaterials.7.014403
 Times Cited Count：1 Percentile：7.28(Materials Science, Multidisciplinary)

Journal Articles

Band gap opening in graphene by hybridization with Au (001) reconstructed surfaces

Terasawa, Tomoo; Matsunaga, Kazuya*; Hayashi, Naoki*; Ito, Takahiro*; Tanaka, Shinichiro*; Yasuda, Satoshi; Asaoka, Hidehito

Physical Review Materials (Internet), 7(1), p.014002_1 - 014002_10, 2023/01

https://doi.org/10.1103/PhysRevMaterials.7.014002
 Times Cited Count：8 Percentile：58.05(Materials Science, Multidisciplinary)

Au(001) surfaces exhibit a complex reconstructed structure [Hex-Au(001)] comprising a hexagonal surface and square bulk lattices, yielding a quasi-one-dimensional corrugated surface. When graphene was grown on this surface, the periodicity of the corrugated surface was predicted to change the electronic structure of graphene, forming bandgaps and new Dirac points. Furthermore, the graphene-Au interface is promising for bandgap generation and spin injection due to band hybridization. Here, we report the angle-resolved photoemission spectroscopy and density functional calculation of graphene on a Hex-Au(001) surface. The crossing point of the original and replica graphene $$pi$$ bands showed no bandgap, suggesting that the one-dimensional potential was too small to modify the electronic structure. A bandgap of 0.2 eV was observed at the crossing point of the graphene $$pi$$ and Au $$6sp$$ bands, indicating that the bandgap is generated using hybridization of the graphene $$pi$$ and Au $$6sp$$ bands. We discussed the hybridization mechanism and concluded that the R30 configuration between graphene and Au and an isolated electronic structure of Au are essential for effective hybridization between graphene and Au. We anticipate that hybridization between graphene $$pi$$ and Au $$6sp$$ would result in spin injection into graphene.

Journal Articles

Weyl-Kondo semimetal behavior in the chiral structure phase of Ce$$_{3}$$Rh$$_{4}$$Sn$$_{13}$$

Iwasa, Kazuaki*; Suyama, Kazuya*; Kawamura, Seiko; Nakajima, Kenji; Raymond, S.*; Steffens, P.*; Yamada, Akira*; Matsuda, Tatsuma*; Aoki, Yuji*; Kawasaki, Ikuto; et al.

Physical Review Materials (Internet), 7(1), p.014201_1 - 014201_11, 2023/01

https://doi.org/10.1103/PhysRevMaterials.7.014201
 Times Cited Count：5 Percentile：40.70(Materials Science, Multidisciplinary)

Journal Articles

Impact of mixed anion ordered state on the magnetic ground states of S = 1/2 square-lattice quantum spin antiferromagnets, Sr$$_2$$NiO$$_3$$Cl and Sr$$_2$$NiO$$_3$$F

Tsujimoto, Yoshihiro*; Sugiyama, Jun; 13 of others*

Physical Review Materials (Internet), 6(11), p.114404_1 - 114404_12, 2022/11

https://link.aps.org/doi/10.1103/PhysRevMaterials.6.114404

Journal Articles

Electrical detection of domain evolution in magnetic Weyl semimetal Co$$_{3}$$Sn$$_{2}$$S$$_{2}$$ submicrometer-wide wire devices

Shiogai, Junichi*; Ikeda, Junya*; Fujiwara, Kohei*; Seki, Takeshi*; Takanashi, Koki; Tsukazaki, Atsushi*

Physical Review Materials (Internet), 6(11), p.114203_1 - 114203_9, 2022/11

https://doi.org/10.1103/PhysRevMaterials.6.114203
 Times Cited Count：5 Percentile：29.66(Materials Science, Multidisciplinary)

Journal Articles

Birchite Cd$$_{2}$$Cu$$_{2}$$(PO$$_{4}$$)$$_{2}$$SO$$_{4}$$ $$cdot$$ 5H$$_{2}$$O as a model antiferromagnetic spin-1/2 Heisenberg $${it J}$$$$_{1}$$-$${it J}$$$$_{2}$$ chain

Fujihara, Masayoshi; Jeschke, H. O.*; Morita, Katsuhiro*; Kuwai, Tomohiko*; Koda, Akihiro*; Okabe, Hirotaka*; Matsuo, Akira*; Kindo, Koichi*; Mitsuda, Setsuo*

Physical Review Materials (Internet), 6(11), p.114408_1 - 114408_8, 2022/11

https://doi.org/10.1103/PhysRevMaterials.6.114408
 Times Cited Count：3 Percentile：17.06(Materials Science, Multidisciplinary)

$${it S}$$ = 1/2 Heisenberg $${it J}$$$$_{1}$$-$${it J}$$$$_{2}$$ chain antiferromagnets have been investigated extensively due to their exotic magnetic states. Here, we report the magnetic behavior of birchite Cd$$_{2}$$Cu$$_{2}$$(PO$$_{4}$$)$$_{2}$$SO$$_{4}$$$$cdot$$5H$$_{2}$$O and its effective spin model. Experimental studies by magnetic susceptibility, magnetization, heat capacity, and $$mu$$SR measurements indicate the absence of long-range order down to 0.4 K. Theoretical studies reveal that birchite is a model compound for the $${it J}$$$$_{1}$$-$${it J}$$$$_{2}$$ antiferromagnetic chain: the intrachain interactions $${it J}$$$$_{1}$$ and $${it J}$$$$_{2}$$ are antiferromagnetic and their magnitude is about 100 times larger than the interchain interactions. The magnitude of $${it J}$$$$_{2}$$ is two to three times larger than that of $${it J}$$$$_{1}$$, thus the spin gap is expected to be only a few percent of that of $${it J}$$$$_{1}$$. The temperature dependence of the specific heat shows a broad peak at about 1 K ($$simeq$$ 0.036 $${it J}$$$$_{1}$$), which suggests the presence of a spin gap.

Journal Articles

Composition-tunable magnon-polaron anomalies in spin Seebeck effects in epitaxial Bi$$_x$$Y$$_{3-x}$$Fe$$_5$$O$$_{12}$$ films

Kikkawa, Takashi*; Saito, Eiji; 6 of others*

Physical Review Materials (Internet), 6(10), p.104402_1 - 104402_13, 2022/10

https://doi.org/10.1103/PhysRevMaterials.6.104402
 Times Cited Count：10 Percentile：49.57(Materials Science, Multidisciplinary)

43 (Records 1-20 displayed on this page)