Article
Materials Science, Multidisciplinary
Ganesan Senthil Murugan, Suheon Lee, C. Wang, H. Luetkens, Kwang-Yong Choi, Raman Sankar
Summary: We combine μSR technique with thermodynamic measurements to explore the spin dynamics of one-dimensional S = 1/2 antiferromagnetic double chain KNaCuP2O7. Results show that the high-temperature diffusive spin transport turns into ballistic behavior below 30K. In addition, longitudinal-field μSR varies hardly with an external magnetic field.
Article
Physics, Multidisciplinary
Yuta Murakami, Shintaro Takayoshi, Tatsuya Kaneko, Andreas M. Lauchli, Philipp Werner
Summary: We study the cold metastable states in one-dimensional photodoped Mott insulators and find that they exhibit spin, charge, and q-spin separation. The wave functions of these states can be expressed as IW) = IWcharge)IWspin)IWq-spin), similar to the Ogata-Shiba states in the doped Hubbard model. IWcharge) is determined by spinless free fermions, IWspin) by the isotropic Heisenberg model, and IWq-spin) by the XXZ model. We show that the q-pairing state has a central charge of 3 and the CDW phase has a central charge of 2, which we confirm numerically. Our study provides insights into the correlations between active degrees of freedom in photodoped strongly correlated systems.
PHYSICAL REVIEW LETTERS
(2023)
Article
Multidisciplinary Sciences
Ruwan Senaratne, Danyel Cavazos-Cavazos, Sheng Wang, Feng He, Ya-Ting Chang, Aashish Kafle, Han Pu, Xi-Wen Guan, Randall G. Hulet
Summary: Confining ultracold atoms to periodic potentials is a powerful method for simulating complex many-body systems. In this study, we confined fermions to one dimension to realize the Tomonaga-Luttinger liquid model and observed a velocity shift of spin and charge excitations in opposite directions, indicating the existence of spin-charge separation.
Article
Materials Science, Multidisciplinary
Weidi Wang, Lei Qiu, Ka Shen
Summary: We theoretically investigated paramagnetic spin transport in a one-dimensional model using atomistic simulations. We found that the spin diffusion length of neighboring spins with antiferromagnetic coupling showed nonmonotonic behavior as the magnetic field increased. This behavior was attributed to the competition between field-driven ordering in the low-field region and the reduction in paramagnon lifetime in the high-field region. Furthermore, the temperature dependence of paramagnon transport was mainly dominated by magnon-phonon scattering.
Article
Materials Science, Ceramics
Gaoshang Gong, Jin Zhou, Yaran Duan, Yuying Zuo, Yongqiang Wang, Yuling Su, Dewei Liu, Zheng Wang
Summary: The microstructure and magnetic properties of Ca3CoMnO6 were investigated by introducing Zn2+ ions. The results show that Zn2+ doping can effectively influence the magnetic structure and dynamic behavior of Ca3CoMnO6, thereby tuning its magnetic ordering and improving multiferroic properties.
CERAMICS INTERNATIONAL
(2022)
Article
Optics
Lin -Lin Su, Jun Ren, Z. Wang, Yan-Kui Bai
Summary: Here we study the properties of multipartite quantum correlation (MQC) in a one-dimensional spin-1/2 XY chain, focusing on the three-spin reduced states and using four introduced MQC measures based on entanglement negativity and entanglement of formation. We find that even in the Ising case, the three-spin subsystems exhibit long-range MQC, and the tripartite quantum correlations beyond the nearest-neighbor three spins can detect quantum phase transition and follow finite-size scaling around the critical point. Furthermore, in the XY model, we show that the selected MQTT can exactly indicate the factorization point of the ground state for the anisotropic model in both thermodynamic and finite-size cases. Moreover, the spatial distribution of MQC based on entanglement negativity can extend to a larger range by tuning the anisotropic parameter, and the newly defined MQC based on entanglement of formation can detect bound entanglement in the three-spin subsystems when entanglement negativity becomes ineffective.
Article
Materials Science, Multidisciplinary
Magdalena Foltyn, Dawid Pinkowicz, Michal Rams
Summary: Single crystal study reveals that Co(NCS)2(aniline)2 forms a canted AF magnetic structure at 6.49 K, which explains the hysteresis loop along the b crystal direction. The Ising spin system of Co(II) ions can be described by the J1-J2 triangular model. Specific heat analysis gives exchange interactions J1 = 31.3(4) K and 2J2 = -2.23(7) K. Application of magnetic field perpendicular to b compensates for AF exchange J2, allowing observation of magnetic relaxation of single chains.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Wen-He Jiao, Shaozhu Xiao, Shi-Ju Zhang, Wu-Zhang Yang, Xiao-Meng Xie, Yi Liu, Ji-Yong Liu, Shi-Jie Song, Wei Liu, Zhi Ren, Guang-Han Cao, Xiaofeng Xu, Shaolong He
Summary: We report the crystal growth, structural characterization, and physical properties of an off-stoichiometric van der Waals telluride Ta1.2Os0.8Te4, which is isostructural with the noncentrosymmetric WTe2, a prototypical type-II Weyl semimetal. Transport measurements have been carried out in magnetic fields up to 9 T. A low-temperature resistivity upturn is observed along all three crystallographic directions at zero field.
Article
Multidisciplinary Sciences
Pedro M. T. Vianez, Yiqing Jin, Maria Moreno, Ankita S. Anirban, Anne Anthore, Wooi Kiat Tan, Jonathan P. Griffiths, Ian Farrer, David A. Ritchie, Andrew J. Schofield, Oleksandr Tsyplyatyev, Christopher J. B. Ford
Summary: This study investigates many-body modes in gated one-dimensional wires and observes two parabolic dispersions associated with spin and charge excitations at high energies. It also discovers two additional one-dimensional replica modes that strengthen with decreasing wire length.
Article
Materials Science, Multidisciplinary
S. Guchhait, Qing-Ping Ding, M. Sahoo, A. Giri, S. Maji, Y. Furukawa, R. Nath
Summary: The structural and magnetic properties of KNaCuP2O7 were investigated using various experimental techniques and electronic structure calculations, confirming its nature as a one-dimensional uniform spin-1/2 Heisenberg antiferromagnet. The experimental results were well supported by theoretical calculations, providing insights into the magnetic behavior of the system.
Article
Physics, Multidisciplinary
S. Athira, Saulo L. L. Silva, Probal Nag, Sushma Lakshmi, C. Sharath Kumar, Debendra Prasad Panda, Sayan Das, Sarita Rajput, Andrews P. Alex, A. Sundaresan, Sivaranjana Reddy Vennapusa, T. Maitra, D. Jaiswal-Nagar
Summary: In this paper, the authors used the distance between the states as a theoretical measure to determine the bipartite entanglement in a one-dimensional magnetic dimer system. The calculation was compared with the concurrence, a well-known entanglement measure, and found to be the same. Experimental verification was done on single crystals of copper acetate, showing the existence of bipartite entanglement even at room temperature. Characterization and calculations revealed the weak intermolecular interactions and low probability of direct Cu-Cu exchange in copper acetate.
NEW JOURNAL OF PHYSICS
(2023)
Article
Physics, Fluids & Plasmas
S. K. Adhikari
Summary: The study focuses on the formation of spin-1 symbiotic spinor solitons in a hyperfine spin F = 1 ferromagnetic Bose-Einstein condensate, showing that quasi-1D and quasi-2D solitons exhibit different spatial density structures.
Article
Materials Science, Multidisciplinary
Jin-Ke Bao, Huibo Cao, Matthew J. Krogstad, Keith M. Taddei, Chenfei Shi, Shixun Cao, Saul H. Lapidus, Sander van Smaalen, Duck Young Chung, Mercouri G. Kanatzidis, Stephan Rosenkranz, Omar Chmaissem
Summary: This research utilizes neutron diffraction to elucidate the exact nature of the previously unknown antiferromagnetic ground state of KMn6Bi5 and discovers transverse incommensurate spin density waves for the Mn atoms. The study also reveals a strong real space coupling between charge density waves and spin density waves, and observes a significant magnetoelastic effect during the antiferromagnetic transition.
Article
Materials Science, Multidisciplinary
Mei-Song Wei, Yi-Qing Wang, Ming-Jie Liao, Zijian Lin, Ce Wang, Jingping Xu, Yaping Yang
Summary: The geometrical significance of winding number is used to study the topological characteristics of a single-excitation Heisenberg XY spin model. The research finds that the quantum state can be transmitted from one site to another with high fidelity due to the presence of topological edge states. Additionally, the quantum state transfer (QST) in the XY model on the kagome lattice exhibits different symmetries and can produce both product states and three-body entangled states depending on the presence of Dzyaloshinskii-Moriya (DM) interactions.
RESULTS IN PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Gavin Sampson, Nicholas C. Bristowe, Sam T. Carr, Asad Saib, Gavin B. G. Stenning, Ewan R. Clark, Paul J. Saines
Summary: This work describes a homometallic spin-1/2 tetrabromocuprate adopting a bilayer structure. Magnetic-susceptibility measurements show a broad maximum centred near 70 K, indicating strong antiferromagnetic coupling between neighbouring copper atoms in different layers of the bilayer. Weak intralayer ferromagnetic interactions between copper cations in neighbouring dimers also exist. First-principles calculations confirm these observations and suggest the presence of a spin ladder within the bilayer with antiferromagnetic rung and weaker ferromagnetic rail couplings.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
