Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- The University of TokyoJP4.5k papers
- Yukawa Institute for Theoretical PhysicsJP2.7k papers
- The University of OsakaJP2.3k papers
- Nagoya UniversityJP2.2k papers
- High Energy Accelerator Research OrganizationJP2.2k papers
- Centre National de la Recherche ScientifiqueFR2.1k papers
- Tokyo Institute of TechnologyJP2k papers
- University of TsukubaJP1.7k papers
- Brookhaven National LaboratoryUS1.6k papers
- Stony Brook UniversityUS1.5k papers
- Waseda UniversityJP1.5k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR1.5k papers
22 papers · 2 filters
Magnetism in f electron superlattices
Robert Peters, Yasuhiro Tada, Norio Kawakami
We analyze antiferromagnetism in electron superlattices. We show that the competition between the Kondo effect and the RKKY interaction in electron materials is modified by…
Ground state properties of determined from Hamiltonian and its extensions containing Kitaev and extended Heisenberg interactions
Tsuyoshi Okubo, Kazuya Shinjo, Youhei Yamaji +4
We investigate the ground state properties of based on numerical calculations of the recently proposed {\it ab initio} Hamiltonian represented by Kitaev and ex…
Fate of Majorana modes in / superlattices -a test bed for reduction of topological classification-
Tsuneya Yoshida, Akito Daido, Youichi Yanase +1
In this paper, we propose superlattice systems as a test bed for the reduction of topological classification in free fermions. We find that th…
Current-induced giant diamagnetism in the Mott insulator Ca2RuO4
Chanchal Sow, Shingo Yonezawa, Sota Kitamura +4
Mott insulators have surprised us many times by hosting new and diverse quantum phenomena when the frozen electrons are perturbed by various stimuli. Superconductivity, metal-insul…
Reduction of classification of a two-dimensional weak topological insulator - real-space DMFT study -
Tsuneya Yoshida, Norio Kawakami
One of the remarkable interaction effects on topological insulators is the reduction of topological classification in free-fermion systems. We address this issue in a bilayer honey…
Realistic quantum critical point in one-dimensional two-impurity models
Benedikt Lechtenberg, Fabian Eickhoff, Frithjof B. Anders
We show that the two-impurity Anderson model exhibits an additional quantum critical point at infinitely many specific distances between both impurities for an inversion symmetric…
Emergence of nontrivial magnetic excitations in a spin liquid state of kagome volborthite
Daiki Watanabe, Kaori Sugii, Masaaki Shimozawa +7
When quantum fluctuations destroy underlying long-range ordered states, novel quantum states emerge. Spin-liquid (SL) states of frustrated quantum antiferromagnets, in which highly…
Super-heavy fermion material as metallic refrigerant for adiabatic demagnetization cooling
Y. Tokiwa, B. Piening, H. S. Jeevan +3
Low-temperature refrigeration is of crucial importance in fundamental research of condensed matter physics, as the investigations of fascinating quantum phenomena, such as supercon…
Electric octupole order in bilayer Rashba system
Takanori Hitomi, Youichi Yanase
The odd-parity multipole is an emergent degree of freedom, leading to spontaneous inversion symmetry breaking. The odd-parity multipole order may occur by forming staggered even-pa…
Electromagnon dispersion probed by inelastic x-ray scattering
Sándor Tóth, Björn Wehinger, Katharina Rolfs +7
Inelastic x-ray scattering with meV energy resolution (IXS) is an ideal tool to measure collective excitations in solids and liquids. In non-resonant scattering condition, the cros…
Visualizing a Bosonic Symmetry Protected Topological Phase in an Interacting Fermion Model
Han-Qing Wu, Yuan-Yao He, Yi-Zhuang You +5
Symmetry protected topological (SPT) phases in free fermion and interacting bosonic systems have been classified, but the physical phenomena of interacting fermionic SPT phases hav…
Multiple metamagnetic quantum criticality in SrRuO
Y. Tokiwa, M. Machalwat, R. S. Perry +1
Bilayer strontium ruthenate SrRuO displays pronounced non-Fermi liquid behavior at magnetic fields around 8 T, applied perpendicular to the ruthenate planes, which prev…
Tuning of magnetic quantum criticality in artificial Kondo superlattice CeRhIn5/YbRhIn5
T. Ishii, R. Toda, Y. Hanaoka +8
The effects of reduced dimensions and the interfaces on antiferromagnetic quantum criticality are studied in epitaxial Kondo superlattices, with alternating layers of heavy-fer…
Quantum Skyrmions in Two-Dimensional Chiral Magnets
Rina Takashima, Hiroaki Ishizuka, Leon Balents
We study the quantum mechanics of magnetic skyrmions in the vicinity of the skyrmion-crystal to ferromagnet phase boundary in two-dimensional magnets. We show that the skyrmion exc…
Pressure-Tuned Exchange Coupling of a Quantum Spin Liquid in the Molecular Triangular Lattice -(ET)Ag(CN)
Yasuhiro Shimizu, Takaaki Hiramatsu, Mitsuhiko Maesato +8
The effects of pressure on a quantum spin liquid are investigated in an organic Mott insulator -(ET)Ag(CN) with a spin-1/2 triangular lattice. The application of neg…
Topological edge Mott insulating state in two dimensions at finite temperatures -bulk and edge analysis-
Tsuneya Yoshida, Norio Kawakami
We study a bilayer Kane-Mele-Hubbard model with lattice distortion and inter-layer spin exchange interaction under cylinder geometry. Our analysis based on real-space dynamical mea…
Effect of delithiation on the dimer transition of the honeycomb-lattice ruthenate LiRuO
Marco-Polo Jimenez-Segura, Atsutoshi Ikeda, Simon A. J. Kimber +3
The honeycomb-lattice ruthenate LiRuO is made heavily Li-deficient by chemical oxidation by iodine. The delithiation triggers a different phase LiRuO, the "D-ph…
Volume-wise destruction of the antiferromagnetic Mott insulating state through quantum tuning
Benjamin A. Frandsen, Lian Liu, Sky C. Cheung +25
Metal-to-insulator transitions (MITs) are a dramatic manifestation of strong electron correlations in solids1. The insulating phase can often be suppressed by quantum tuning, i.e.…
Charged Topological Entanglement Entropy
Shunji Matsuura, Xueda Wen, Ling-Yan Hung +1
A charged entanglement entropy is a new measure which probes quantum entanglement between different charge sectors. We study symmetry protected topological (SPT) phases in 2+1 dime…
Effect of disorder on the dimer transition of the honeycomb-lattice compound LiRuO
Marco-Polo Jimenez-Segura, Atsutoshi Ikeda, Shingo Yonezawa +1
We report the dependence of magnetic properties on the crystalline disorder in LiRuO with Ru honeycomb lattice. This oxide exhibits unconventional Ru-dimer transition bel…
Quadrupole order in the frustrated pyrochlore magnet TbTiO
H. Takatsu, T. Taniguchi, S. Kittaka +2
We have studied the hidden long-range order (LRO) of the frustrated pyrochlore magnet TbTiO by means of specific-heat experiments and Monte-Carlo (MC) simulations, whic…
Correlated electronic states of SrVO3 revealed by angle-resolved photoemission spectroscopy
T. Yoshida, M. Kobayashi, K. Yoshimatsu +2
In this article, we review recent progress in angle-resolved photoemission (ARPES) studies of the Mott-Hubbard-type correlated electron systems SrVO3. It has the d1 electron config…