254 citations · 3k across the 87 of their papers we have counts for
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Dramatic elastic response at the critical end point in UTe
Michal Vališka, Tetiana Haidamak, Andrej Cabala +10
The first-order transition line in the \textit{H-T} phase diagram of itinerant electron metamagnets terminates at the critical end point-analogous to the critical point on the gas-…
Ferromagnetic Crossover within the Ferromagnetic Order of UTe
Petr Opletal, Hironori Sakai, Yoshinori Haga +4
We investigate the physical properties of a single crystal of uranium telluride UTe. We have confirmed that UTe crystallizes in the hexagonal structure wi…
First Observation of de Haas-van Alphen Effect and Fermi Surfaces in Unconventional Superconductor UTe2
Dai Aoki, Hironori Sakai, Petr Opletal +11
We report the first observation of the de Haas-van Alphen (dHvA) effect in the novel spin-triplet superconductor UTe2 using high quality single crystals with the high residual resi…
Electronic Structure of ThPdAl: an impact of the U states in the electronic structure of UPdAl
Shin-ichi Fujimori, Yukiharu Takeda, Hiroshi Yamagami +3
The electronic structure of ThPdAl, which is isostructural to the heavy fermion superconductor UPdAl, was investigated by photoelectron spectroscopy. The band struc…
Slow Electronic Dynamics in the Paramagnetic State of UTe
Yo Tokunaga, Hironori Sakai, Shinsaku Kambe +13
Te NMR experiments in field () applied along the easy magnetization axis (the -axis) revealed slow electronic dynamics developing in the paramagnetic state of UTe…
Electronic structure of URuSi in paramagnetic phase: Three-dimensional angle resolved photoelectron spectroscopy study
Shin-ichi Fujimori, Yukiharu Takeda, Hiroshi Yamagami +2
The three-dimensional (3D) electronic structure of the hidden order compound URuSi in a paramagnetic phase was revealed using a 3D angle-resolved photoelectron spectroscopy…
Nonmagnetic-magnetic transition and magnetically ordered structure in SmS
S. Yoshida, T. Koyama, H. Yamada +5
SmS, a prototypical intermediate valence compound, has been studied by performing high-pressure nuclear magnetic resonance measurements on a S-enriched sample. The observati…
Novel universality class for the ferromagnetic transition in the low carrier concentration systems UTeS and USeS exhibiting large negative magnetoresistance
Naoyuki Tateiwa, Yoshinori Haga, Hironori Sakai +1
We report the novel critical behavior of magnetization in low carrier concentration systems UTeS and USeS that exhibit the large negative magnetoresistance around the ferromagnetic…
Novel critical behavior of magnetization in URhSi:Similarities to uranium ferromagnetic superconductors UGe and URhGe
Naoyuki Tateiwa, Yoshinori Haga, Etsuji Yamamoto
We study the critical behavior of dc magnetization in the uranium ferromagnet URhSi around the paramagnetic to ferromagnetic phase transition at T_C~ 10 K with a modified Arrott pl…
Manifestation of electron correlation effect in states of uranium compounds revealed by resonant photoemission spectroscopy
Shin-ichi Fujimori, Masaharu Kobata, Yukiharu Takeda +7
We have elucidated the nature of the electron correlation effect in uranium compounds by imaging the partial density of states (pDOS) of typical itinerant, localize…
Unique Helical Magnetic Order and Field-Induced Phase in Trillium Lattice Antiferromagnet EuPtSi
Koji Kaneko, Matthias D. Frontzek, Masaaki Matsuda +8
Magnetic transition phenomena in cubic chiral antiferromagnet EuPtSi with =4.0~K were investigated by means of single crystal neutron diffraction. At 0.3~K in the ground…
Magnetic field induced phenomena in UIrGe in fields applied along b axis
Jiri Pospisil, Yoshinori Haga, Yoshimitsu Kohama +11
The metamagnetic transition between the antiferromagnetic and paramagnetic state in UIrGe has been studied at various temperatures by magnetization, heat capacity and magnetocalori…
Critical behavior of magnetization in URhAl:Quasi-two-dimensional Ising system with long-range interactions
Naoyuki Tateiwa, Jiri Pospisil, Yoshinori Haga +1
The critical behavior of dc magnetization in the uranium ferromagnet URhAl with the hexagonal ZrNiAl-type crystal structure has been studied around the ferromagnetic transition tem…
Phenomenological approach to study the degree of the itinerancy of the electrons in actinide ferromagnets with spin fluctuation theory
Naoyuki Tateiwa, Jiri Pospisil, Yoshinori Haga +3
Actinide compounds with 5f electrons have been attracting much attention because of their interesting magnetic and electronic properties such as heavy fermion state, unconventional…
Consecutive magnetic phase diagram of UCoGe-URhGe-UIrGe system
Jiří Pospíšil, Yoshinori Haga, Atsushi Miyake +9
We prepared single crystals in UCo1-xRhxGe and UIr1-xRhxGe systems to establish a complex dU-U-T (dU-U is the shortest interatomic uranium distance and T is temperature) magnetic p…
Electronic structures of UX (X=Al, Ga, and In) studied by photoelectron spectroscopy
Shin-ichi Fujimori, Masaaki Kobata, Yukiharu Takeda +7
The electronic structures of UX (X=Al, Ga, and In) were studied by photoelectron spectroscopy to understand the relationship between their electronic structures and magnetic pr…
Wing structure in the phase diagram of the Ising Ferromagnet URhGe close to its tricritical point investigated by angle-resolved magnetization measurements
Shota Nakamura, Toshiro Sakakibara, Yusei Shimizu +5
High-precision angle-resolved dc magnetization and magnetic torque studies were performed on a single-crystalline sample of URhGe, an orthorhombic Ising ferromagnet with the ax…
Electronic structure of ThRu2Si2 studied by angle-resolved photoelectron spectroscopy: Elucidating the contribution of U 5f states in URu2Si2
Shin-ichi Fujimori, Masaaki Kobata, Yukiharu Takeda +8
The electronic structure of ThRu2Si2 was studied by angle-resolved photoelectron spectroscopy (ARPES) with incident photon energies of hn=655-745 eV. Detailed band structure and th…
Itinerant ferromagnetism in actinide 5f electrons system: Phenomenological analysis with spin fluctuation theory
Naoyuki Tateiwa, Jiri Pospisil, Yoshinori Haga +3
We have carried out an analysis of magnetic data in 69 uranium, 7 neptunium and 4 plutonium ferromagnets with the spin fluctuation theory developed by Takahashi (Y. Takahashi, J. P…
Atomic-scale visualization of surface-assisted orbital order
Howon Kim, Yasuo Yoshida, Chi-Cheng Lee +6
Orbital-related physics attracts growing interest in condensed matter research, but direct real-space access of the orbital degree of freedom is challenging. Here we report a first…
Switching of magnetic ground states across the UIr1-xRhxGe alloy system
Jiri Pospisil, Yoshinori Haga, Shinsaku Kambe +8
We investigated the evolution of magnetism in the UIr1-xRhxGe system by the systematic study of high-quality single crystals. Lattice parameters of both parent compounds are very s…
Effect of Pressure on Magnetism of UIrGe
Jiri Pospisil, Jun Gouchi, Yoshinori Haga +7
We report the effect of hydrostatic pressure on the electronic state of the antiferromagnet UIrGe, which is isostructural and isoelectronic with the ferromagnetic superconductors U…
Electronic structures of ferromagnetic superconductors and studied by angle-resolved photoelectron spectroscopy
Shin-ichi Fujimori, Takuo Ohkochi, Ikuto Kawasaki +9
The electronic structures of the ferromagnetic superconductors and in the paramagnetic phase were studied by angle-resolved photoelectron spectros…
Gradual localization of 5f states in orthorhombic UTX ferromagnets - polarized neutron diffraction study of Ru substituted UCoGe
Michal Valiska, Jiri Pospisil, Anne Stunault +13
We report on a microscopic study of the evolution of ferromagnetism in the Ru substituted ferromagnetic superconductor (FM SC) UCoGe crystallizing in the orthorhombic TiNiSi-type s…