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Journal Articles

Weyl semimetallic state in the Rashba-Hubbard Model

Kubo, Katsunori

Journal of the Physical Society of Japan, 93(2), p.024708_1 - 024708_8, 2024/02

Journal Articles

Unique band structure of pressure induced semiconducting state in SmS characterized by $$^{33}$$S-nuclear magnetic resonance measurements

Yoshida, Shogo*; Haga, Yoshinori; Fujii, Takuto*; Nakai, Yusuke*; Mito, Takeshi*; 8 of others*

Journal of the Physical Society of Japan, 93(1), p.013702_1 - 013702_5, 2024/01

Journal Articles

Isotopic composition of enriched $$^{100}$$Mo for production of medical $$^{rm 99m}$$Tc by $$^{100}$$Mo($$p,2n$$)$$^{rm 99m}$$Tc

Hashimoto, Shintaro; Nagai, Yasuki*

Journal of the Physical Society of Japan, 92(12), p.124202_1 - 124202_11, 2023/12

$$^{rm 99m}$$Tc, which is a daughter nuclide of $$^{99}$$Mo, is used worldwide for medical imaging. However, there is a problem with the supply of $$^{rm 99m}$$Tc ($$^{99}$$Mo) due to the replacement of aging reactors. A method to produce $$^{rm 99m}$$Tc by irradiating $$^{100}$$Mo with protons using medical cyclotrons has been proposed. In this study, we presented a method to determine individual excitation functions for Mo($$p,x$$)Tc using measured excitation functions for $$^{nat}$$Mo($$p,x$$)Tc. The method was validated by comparing estimated radionuclide purities of $$^{rm 99m}$$Tc in enriched $$^{100}$$Mo samples using the determined excitation functions with measured ones. In this study, we found that the content of $$^{97}$$Mo, $$^{96}$$Mo, and $$^{95}$$Mo should be low in order to produce $$^{rm 99m}$$Tc with high radionuclide purity. The results of this study play an important role in discussion of the required Mo compositions in enriched $$^{100}$$Mo, taking into account the constraints of each facility.

Journal Articles

Magnetic and fermi surface properties of semimetals EuAs$$_3$$ and Eu(As$$_{1-x}$$P$$_x$$)$$_3$$

Onuki, Yoshichika*; Karube, Kosuke*; Aoki, Dai*; Nakamura, Ai*; Homma, Yoshiya*; Matsuda, Tatsuma*; Haga, Yoshinori; Takeuchi, Tetsuya*

Journal of the Physical Society of Japan, 92(11), p.114703_1 - 114703_12, 2023/11

Journal Articles

Magnetic excitation in the $$S$$=1/2 Ising-like antiferromagnetic chain CsCoCl$$_{3}$$ in longitudinal magnetic fields studied by high-field ESR measurements

Kimura, Shojiro*; Onishi, Hiroaki; Okunishi, Koichi*; Akaki, Mitsuru*; Narumi, Yasuo*; Hagiwara, Masayuki*; Kindo, Koichi*; Kikuchi, Hikomitsu*

Journal of the Physical Society of Japan, 92(9), p.094701_1 - 094701_9, 2023/09

 Times Cited Count:0 Percentile:0

Journal Articles

Systematic analysis of the nuclear absorption effect on the cross section of the knockout reaction

Shim, S.-I.*; Yoshida, Kazuki; Ogata, Kazuyuki*

Journal of the Physical Society of Japan, 92(9), p.094201_1 - 094201_8, 2023/09

We systematically investigate the absorption effects on the cross sections of the nucleon and alpha knockout reactions. To do this, we calculate the ratio of the cross sections of the distorted-wave impulse approximation and plane-wave impulse approximation and examine its dependence on the mass number and single-particle orbital of the knocked-out particles.

Journal Articles

Incommensurate nature of the antiferromagnetic order in GdCu$$_2$$

Kaneko, Koji; Tabata, Chihiro; Hagihara, Masato; Yamauchi, Hiroki; Kubota, Masato; Osakabe, Toyotaka; Onuki, Yoshichika*

Journal of the Physical Society of Japan, 92(8), p.085001_1 - 085001_2, 2023/08

 Times Cited Count:0 Percentile:0(Physics, Multidisciplinary)

Journal Articles

One-dimensional band structure in quasi-two-dimensional $$eta$$-Mo$$_4$$O$$_{11}$$ revealed by angle-resolved photoelectron spectroscopy and first-principles calculation

Sumida, Kazuki; Higaki, Sota*; Sato, Hitoshi*; Tsuru, Daichi*; Miyamoto, Koji*; Okuda, Taichi*; Kuroiwa, Yoshihiro*; Moriyoshi, Chikako*; Takase, Koichi*; Oguchi, Tamio*; et al.

Journal of the Physical Society of Japan, 92(8), p.084706_1 - 084706_6, 2023/08

Journal Articles

Magnetic hysteresis induction with nanocolumnar defects in magnetic insulators

Harii, Kazuya*; Umeda, Maki; Arisawa, Hiroki*; Hioki, Tomosato*; Sato, Nana; Okayasu, Satoru; Ieda, Junichi

Journal of the Physical Society of Japan, 92(7), p.073701_1 - 073701_4, 2023/07

 Times Cited Count:0 Percentile:69.97(Physics, Multidisciplinary)

Journal Articles

Emergence of inductance and capacitance from topological electromagnetism

Araki, Yasufumi; Ieda, Junichi

Journal of the Physical Society of Japan, 92(7), p.074705_1 - 074705_9, 2023/06

 Times Cited Count:0 Percentile:0(Physics, Multidisciplinary)

Topological electromagnetism owing to nontrivial momentum-space topology of electrons in insulators gives rise to diverse anomalous magnetoelectric responses. While conventional inductors and capacitors are based on classical electromagnetism described by Maxwell's equations, here we show that topological electromagnetism in combination with spin dynamics in magnets also generates an inductance or a capacitance. We build a generic framework to extract the complex impedance on the basis of topological field theory, and demonstrate the emergence of an inductance or a capacitance in several heterostructure setups. In comparison with the previously-studied emergent inductances in metallic magnets, insulators highly suppress the power loss, because of the absence of Joule heating. We show that the inductance from topological electromagnetism is achieved at low current and high frequency, and is also advantageous in its power efficiency, as characterized by the high quality factor (Q-factor).

Journal Articles

Low-temperature magnetic fluctuations investigated by $$^{125}$$Te-NMR on the uranium-based superconductor UTe$$_2$$

Fujibayashi, Hiroki*; Kinjo, Katsuki*; Nakamine, Genki*; Kitagawa, Shunsaku*; Ishida, Kenji*; Tokunaga, Yo; Sakai, Hironori; Kambe, Shinsaku; Nakamura, Ai*; Shimizu, Yusei*; et al.

Journal of the Physical Society of Japan, 92(5), p.053702_1 - 053702_5, 2023/05

 Times Cited Count:0 Percentile:0(Physics, Multidisciplinary)

Journal Articles

Large reduction in the $$a$$-axis knight shift on UTe$$_2$$ with $$T_c$$ = 2.1 K

Matsumura, Hiroki*; Fujibayashi, Hiroki*; Kinjo, Katsuki*; Kitagawa, Shunsaku*; Ishida, Kenji*; Tokunaga, Yo; Sakai, Hironori; Kambe, Shinsaku; Nakamura, Ai*; Shimizu, Yusei*; et al.

Journal of the Physical Society of Japan, 92(6), p.063701_1 - 063701_5, 2023/05

Journal Articles

Sparse modeling approach for quasiclassical theory of superconductivity

Nagai, Yuki; Shinaoka, Hiroshi*

Journal of the Physical Society of Japan, 92(3), p.034703_1 - 034703_8, 2023/03

 Times Cited Count:0 Percentile:0(Physics, Multidisciplinary)

no abstracts in English

Journal Articles

Ferromagnetic crossover within the ferromagnetic order of U$$_{7}$$Te$$_{12}$$

Opletal, P.; Sakai, Hironori; Haga, Yoshinori; Tokiwa, Yoshifumi; Yamamoto, Etsuji; Kambe, Shinsaku; Tokunaga, Yo

Journal of the Physical Society of Japan, 92(3), p.034704_1 - 034704_5, 2023/03

 Times Cited Count:0 Percentile:0(Physics, Multidisciplinary)

We investigate the physical properties of a single crystal of uranium telluride U$$_{7}$$Te$$_{12}$$. We have confirmed that U$$_{7}$$Te$$_{12}$$ crystallizes in the hexagonal structure with three nonequivalent crystallographic uranium sites. The paramagnetic moments are estimated to be approximately 1 $$mu_{B}$$ per the uranium site, assuming a uniform moment on all the sites. A ferromagnetic phase transition occurs at $$T_{rm C}$$= 48 K, where the in-plane magnetization increases sharply, whereas the out of-plane component does not increase significantly. With decreasing temperature further below $$T_{rm C}$$ under field-cooling conditions, the out-of-plane component increases rapidly around T$$^{star}$$= 26 K. In contrast, the in-plane component hardly changes at T$$^{star}$$. Specific heat measurement indicates no $$lambda$$-type anomaly around T$$^{star}$$, so this is a cross-over suggesting a reorientation of the ordering moments or successive magnetic ordering on the part of the multiple uranium sites.

Journal Articles

Magnetic properties of single crystalline Tb$$_5$$Sb$$_3$$

Kitaori, Aki*; Kanazawa, Naoya*; Kida, Takanori*; Narumi, Yasuo*; Hagiwara, Masayuki*; Kindo, Koichi*; Takeuchi, Tetsuya*; Nakamura, Ai*; Aoki, Dai*; Haga, Yoshinori; et al.

Journal of the Physical Society of Japan, 92(2), p.024702_1 - 024702_6, 2023/02

 Times Cited Count:0 Percentile:0(Physics, Multidisciplinary)

Journal Articles

Enhanced Spin-Orbit Coupling in a Correlated Metal

Kubo, Katsunori

Journal of the Physical Society of Japan, 91(12), p.124707_1 - 124707_7, 2022/12

 Times Cited Count:1 Percentile:31.68(Physics, Multidisciplinary)

Journal Articles

Magnetic diffuse and quasi-elastic scatterings in frustrated magnet YBaCo$$_{4}$$O$$_{7}$$

Soda, Minoru*; Kofu, Maiko; Kawamura, Seiko; Asai, Shinichiro*; Masuda, Takatsugu*; Yoshizawa, Hideki*; Furukawa, Hazuki*

Journal of the Physical Society of Japan, 91(9), p.094707_1 - 094707_5, 2022/09

 Times Cited Count:0 Percentile:0(Physics, Multidisciplinary)

Journal Articles

Magnetic orderings from spin-orbit coupled electrons on kagome lattice

Watanabe, Jin*; Araki, Yasufumi; Kobayashi, Koji*; Ozawa, Akihiro*; Nomura, Kentaro*

Journal of the Physical Society of Japan, 91(8), p.083702_1 - 083702_5, 2022/08

 Times Cited Count:1 Percentile:31.68(Physics, Multidisciplinary)

We investigate magnetic orderings on kagome lattice numerically from the tight-binding Hamiltonian of electrons, governed by the filling factor and spin-orbit coupling (SOC) of electrons. We find that even a simple kagome lattice model can host both ferromagnetic and noncollinear antiferromagnetic orderings depending on the electron filling, reflecting gap structures in the Dirac and flat bands characteristic to the kagome lattice. Kane-Mele- or Rashba-type SOC tends to stabilize noncollinear orderings, such a magnetic spirals and 120-degree antiferromagnetic orderings, due to the effective Dzyaloshinskii-Moriya interaction from SOC. The obtained phase structure helps qualitative understanding of magnetic orderings in various kagome-layered materials with Weyl or Dirac electrons.

Journal Articles

First observation of the de Haas-van Alphen effect and Fermi surfaces in the unconventional superconductor UTe$$_2$$

Aoki, Dai*; Sakai, Hironori; Opletal, P.; Tokiwa, Yoshifumi; Ishizuka, Jun*; Yanase, Yoichi*; Harima, Hisatomo*; Nakamura, Ai*; Li, D.*; Homma, Yoshiya*; et al.

Journal of the Physical Society of Japan, 91(8), p.083704_1 - 083704_5, 2022/08

 Times Cited Count:15 Percentile:96.38(Physics, Multidisciplinary)

Journal Articles

Cycloidal magnetic ordering in noncentrosymmetric EuIrGe$$_3$$

Matsumura, Takeshi*; Tsukakoshi, Mitsuru*; Ueda, Yoshihisa*; Higa, Nonoka*; Nakao, Akiko*; Kaneko, Koji; Kakihana, Masashi*; Hedo, Masato*; Nakama, Takao*; Onuki, Yoshichika*

Journal of the Physical Society of Japan, 91(7), p.073703_1 - 073703_5, 2022/07

 Times Cited Count:3 Percentile:81.82(Physics, Multidisciplinary)

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