Article
Materials Science, Multidisciplinary
Hong-Chen Jiang
Summary: This study investigates lightly doped Quantum Spin Liquid (QSL) through a large-scale density-matrix renormalization group study of the t-J model, revealing evidence that doping QSL can naturally give rise to d-wave superconductivity. The spin-spin correlations fall exponentially, suggesting a smooth evolution of superconducting pair-pair correlations from the insulating parent state.
NPJ QUANTUM MATERIALS
(2021)
Article
Physics, Multidisciplinary
Hong-Chen Jiang, Steven A. Kivelson
Summary: In a t-J model with small hole doping and frustration, power-law superconducting correlations and exponentially decreasing spin-spin correlations were observed, suggesting a smooth evolution from the insulating parent state. The presence of frustration led to a strong diverging superconducting susceptibility as the temperature approached zero.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Multidisciplinary
Eric Dupuis, Rufus Boyack, William Witczak-Krempa
Summary: This study investigates monopole operators in various quantum critical points, deriving scaling dimensions using the state-operator correspondence. It examines scenarios in quantum electrodynamics and transitions to topological quantum spin liquids.
Article
Materials Science, Multidisciplinary
Takuhiro Ogino, Ryui Kaneko, Satoshi Morita, Shunsuke Furukawa, Naoki Kawashima
Summary: The study investigates a quantum phase transition between a Neel phase and a valence bond solid (VBS) phase in a spin-1/2 two-leg XXZ ladder with a four-spin interaction. The Neel-VBS transition is found to be continuous and belong to the Gaussian universality class, with critical exponents satisfying expected constraints. These critical exponents do not significantly change along the phase boundary as generally allowed for the Gaussian class.
Article
Materials Science, Multidisciplinary
Dorota Szwagierczak, Beata Synkiewicz-Musialska, Jan Kulawik, Elzbieta Czerwinska, Norbert Palka
Summary: Novel CuB2O4-Cu3B2O6 substrates doped with three Li-based sintering aids, Li2WO4, LiBO2 and Li2CO3, were fabricated using LTCC technology. The study aims to confirm the feasibility of LTCC substrates based on the developed materials and demonstrate their good dielectric properties in a wide terahertz frequency range. The ceramic materials were comprehensively characterized in terms of thermal, compositional, microstructural, and dielectric properties. The developed ceramics doped with Li2WO4 and LiBO2 showed great potential as LTCC substrates for THz applications, exhibiting low sintering temperature, low dielectric permittivity, low loss tangent, low thermal expansion coefficient, and high flexural strength.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Piotr Tomczak
Summary: This study reexamines the Kosterlitz-Thouless phase transition in an antiferromagnetic spin-1/2 Heisenberg chain with nearest- and next-nearest-neighbor interactions from a new perspective. By defining the winding number W and utilizing finite-size scaling, the accurate values of critical coupling and subleading critical exponent are determined. This approach is considered useful for analyzing topological phase transitions in systems described by resonating valence bond states.
Article
Materials Science, Multidisciplinary
Zheng Yan, Zheng Zhou, Olav F. Syljuasen, Junhao Zhang, Tianzhong Yuan, Jie Lou, Yan Chen
Summary: The quantum dimer model is a low-energy effective model for many magnetic systems that are candidates for quantum spin liquids, described by gauge field theory with local constraints. The controversy surrounding the phase diagrams of quantum dimer models, particularly on a square lattice, stems from whether the mixed state exists due to these constraints. This paper provides strong evidence, obtained through a sweeping cluster quantum Monte Carlo method, to show that the ground state belongs to the mixed phase in a vast parameter region.
Article
Materials Science, Multidisciplinary
Masari Watanabe, Nobuyuki Kurita, Hidekazu Tanaka, Wataru Ueno, Kazuki Matsui, Takayuki Goto, Masato Hagihala
Summary: We report the magnetic properties of the double perovskites SrLaCuSbO6 and SrLaCuNbO6. Both compounds show characteristic behavior of square lattice Heisenberg antiferromagnets with S = 1/2. Neutron powder diffraction measurements reveal different spin structures in the two compounds, with SLCSO exhibiting a Neel antiferromagnetic structure and SLCNO exhibiting a columnar antiferromagnetic structure. The dominant interactions in SLCSO and SLCNO are nearest-neighbor and next-nearest-neighbor interactions, respectively. Additionally, the measured ordered moments are significantly smaller than those predicted by linear spin wave theory, indicating the effect of bond randomness caused by site disorder.
Article
Materials Science, Multidisciplinary
Yixuan Huang, Xiao-Yu Dong, D. N. Sheng, C. S. Ting
Summary: In this paper, we investigated the frustrated XY model on the honeycomb lattice and demonstrated the emergence of the Kalmeyer-Laughlin CSL due to the interplay of magnetic frustration and chiral interactions. This nonmagnetic CSL is characterized by specific features such as scalar chiral order and chiral entanglement spectrum, described by chiral SU(2)(1) conformal field theory.
Article
Chemistry, Multidisciplinary
Thijs Stuyver, Sason Shaik
Summary: This research develops an approach to predict major reaction modes associated with a chemical system based on reactant properties from the valence bond perspective. By analyzing promotion energies, predictive information about potential transition states and products can be obtained, and insight into the impact of environmental effects on mechanistic landscapes can be provided.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Inorganic & Nuclear
Xiao Wang, Zhehong Liu, Hongshan Deng, Stefano Agrestini, Kai Chen, Jyh-Fu Lee, Hong-Ji Lin, Chien-Te Chen, Fadi Choueikani, Philippe Ohresser, Fabrice Wilhelm, Andrei Rogalev, Liu Hao Tjeng, Zhiwei Hu, Youwen Long
Summary: The compound CaCu3Fe2Os2O12 has a high ferrimagnetic ordering temperature. The basic magnetic properties of the compound remain robust against site disorder.
INORGANIC CHEMISTRY
(2022)
Article
Physics, Multidisciplinary
Michele Fabrizio
Summary: The search for insulating materials with low-energy quasiparticles carrying electron's quantum numbers except charge has reached a turning point after the discovery of Mott insulators displaying properties similar to metals. These materials exhibit quantum oscillations in a magnetic field, which is not inconsistent with Landau's Fermi liquid theory of quasiparticles.
PHYSICAL REVIEW LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Dorota Pulmannova, Celine Besnard, Petr Bezdicka, Marios Hadjimichael, Jeremie Teyssier, Enrico Giannini
Summary: Single crystals of transition metal oxides are crucial for studying their physical properties. In the strontium titanate family, crystal growth of all compounds except SrTiO3 has been challenging. This study successfully grew crystals of the high-temperature polymorph of Sr2TiO4 and investigated its crystal structure and transformation mechanism, providing insights into the failed growth of the low-temperature phase.
Article
Chemistry, Physical
Xabier Martinez de Irujo Labalde, Heather Grievson, Josie-May Mortimer, Samuel G. Booth, Alex Scrimshire, Paul A. Bingham, Emmanuelle Suard, Serena A. Cussen, Michael A. Hayward
Summary: Cation migration on electrochemical cycling significantly affects the performance of li-ion cathode materials. Partial substitution of Fe with In suppresses cation migration, allowing the material to be electrochemically cycled between two compositions.
CHEMISTRY OF MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Tokuro Shimokawa, Ken'ichi Takano, Zentaro Honda, Akira Okutani, Masayuki Hagiwara
Summary: We investigate the ground-state phase diagram of a spin-1/2 honeycomb-lattice antiferromagnetic model with three exchange interactions. The results show the existence of a Ne 'el phase and a gapped quantum paramagnetic phase, with hexagonal-singlet-type states and dimer-singlet-type states alternatingly.
