Advanced Physics Research最新文献_第10页

Observation of Magnetic Field-Induced and Partially Switchable Electric Polarization in Spin-Chain FePbBiO4 观测自旋链 FePbBiO4 中磁场诱导和部分可切换的电极化

Advanced Physics Research Pub Date : 2024-06-17 DOI: 10.1002/apxr.202400056

Ajay Tiwari, D. Chandrasekhar Kakarla, Wei-Lin Chen, C. Dhanasekhar, Ya-Jing Hu, Jiunn-Yuan Lin, Chin-Wei Wang, Ting-Wei Kuo, Arkadeb Pal, Mitch Ming-Chi Chou, Hung-Duen Yang

{"title":"Observation of Magnetic Field-Induced and Partially Switchable Electric Polarization in Spin-Chain FePbBiO4","authors":"Ajay Tiwari, D. Chandrasekhar Kakarla, Wei-Lin Chen, C. Dhanasekhar, Ya-Jing Hu, Jiunn-Yuan Lin, Chin-Wei Wang, Ting-Wei Kuo, Arkadeb Pal, Mitch Ming-Chi Chou, Hung-Duen Yang","doi":"10.1002/apxr.202400056","DOIUrl":"https://doi.org/10.1002/apxr.202400056","url":null,"abstract":"The linear magnetoelectric (ME) characteristics of a quasi-1D spin-chain compound, FePbBiO4, are reported. Two distinct antiferromagnetic (AFM) orders occurring at ≈23 K (TN1) and 12 K (TN2) are verified using magnetization, specific heat, and conspicuous dielectric (ε′) anomalies. A striking observation is that no pyrocurrent (Ipy) is detected in the absence of magnetic field (H); however, H-induced ferroelectric polarization (P) at TN1 and P unexpectedly partially switches or reverses below TN2 as reproduced by applying positive and negative electric fields (E). The resulting magnetic field and temperature (H-T) phase diagram illustrates T-dependent H-induced spin reorientation and electric P. The interaction between T, H, spin dynamics, and lattice structures is pivotal and is qualitatively discussed and proposed as an explanation for the observed ME nature.","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"3 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.202400056","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Implementation and Characterization of the Dice Lattice in the Electron Quantum Simulator 电子量子模拟器中骰子晶格的实现与特征描述

Advanced Physics Research Pub Date : 2024-06-17 DOI: 10.1002/apxr.202400038

Camillo Tassi, Dario Bercioux

{"title":"Implementation and Characterization of the Dice Lattice in the Electron Quantum Simulator","authors":"Camillo Tassi, Dario Bercioux","doi":"10.1002/apxr.202400038","DOIUrl":"https://doi.org/10.1002/apxr.202400038","url":null,"abstract":"Materials featuring touching points, localized states, and flat bands are of great interest in condensed matter and artificial systems due to their implications in topology, quantum geometry, superconductivity, and interactions. In this theoretical study, the experimental realization of the dice lattice with adjustable parameters is proposed by arranging carbon monoxide molecules on a two-dimensional (2D) electron system at a (111) copper surface. First, a theoretical framework is developed to obtain the spectral properties within a nearly free electron approximation and then compare them with tight-binding calculations. This investigation reveals that the high mobility of Shockley state electrons enables an accurate theoretical description of the artificial lattice using a next-nearest-neighbor tight-binding model, resulting in the emergence of a touching point, a quasi-flat band, and localized lattice site behavior in the local density of states. Additionally, theoretical results for a long-wavelength low-energy model that accounts for next-nearest-neighbor hopping terms are presented. Furthermore, the model's behavior under an external magnetic field is theoretically examined by employing Peierl's substitution, a commonly used technique in theoretical physics to incorporate magnetic fields into lattice models. The theoretical findings suggest that, owing to the exceptional electron mobility, the highly degenerate eigenenergy associated with the Aharonov-Bohm caging mechanism may not manifest in the proposed experiment.","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"3 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.202400038","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142169839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rise and Fall of the Ferromagnetism in CrSBr Flakes by Non-Magnetic Ion Irradiation 非磁性离子辐照下 CrSBr 薄片中铁磁性的消长

Advanced Physics Research Pub Date : 2024-06-13 DOI: 10.1002/apxr.202400053

Fangchao Long, Yi Li, Yu Cheng, Kseniia Mosina, Ulrich Kentsch, Zdenek Sofer, Slawomir Prucnal, Manfred Helm, Shengqiang Zhou

引用次数: 0

Unconventional Hole Doping of S = ½ Kagome Antiferromagnet CoCu3(OH)6Cl2 S = ½ 鹿目反铁磁体 CoCu3(OH)6Cl2 的非常规空穴掺杂

Advanced Physics Research Pub Date : 2024-06-13 DOI: 10.1002/apxr.202400037

Rimpa Mandal, Pranay Ninawe, K. S. Ananthram, Akash Mhase, Kriti Gupta, Sauvik Saha, Ajay Ugale, Kirandeep Singh, Kartick Tarafder, Nirmalya Ballav

{"title":"Unconventional Hole Doping of S = ½ Kagome Antiferromagnet CoCu3(OH)6Cl2","authors":"Rimpa Mandal, Pranay Ninawe, K. S. Ananthram, Akash Mhase, Kriti Gupta, Sauvik Saha, Ajay Ugale, Kirandeep Singh, Kartick Tarafder, Nirmalya Ballav","doi":"10.1002/apxr.202400037","DOIUrl":"10.1002/apxr.202400037","url":null,"abstract":"Geometrically perfect S = ½ kagome lattices with frustrated magnetism are typically electrical insulators. Electron or hole doping is predicted to induce an exotic conducting state including superconductivity. Herein, an unconventional strategy of doping an S = ½ kagome lattice CoCu3(OH)6Cl2 is adopted – a structural analogue of a well-known quantum spin liquid (QSL) candidate herbertsmithite (ZnCu3(OH)6Cl2) – by integrating it with reduced graphene oxide (rGO) via in situ redox chemistry. Such an integration drastically enhances the electrical conductivity, resulting in the transformation of an insulator to a semiconductor, corroborating the respective density of states obtained from the density functional theory calculations. Estimation of the magnetic moments, data on the Hall-effect measurements, Bader charge analysis, and photoemission signals, altogether provide a bold signature of remote hole doping in CoCu3(OH)6Cl2 by rGO. The remote doping provides an alternative to the site doping approach to impart exotic electronic properties in spin liquid candidates, specifically, the generation of topological states like Dirac metal is envisioned.","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"3 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.202400037","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141350131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ultra-Inclined Nanocolumnar ZnO Films Sputtered Using a Novel Masking Configuration Providing Controlled and Restricted Oblique Angle Deposition for Enhanced Sensing Platforms 利用新型掩膜配置溅射的超倾斜纳米柱状氧化锌薄膜，为增强型传感平台提供受控和受限的斜角沉积

Advanced Physics Research Pub Date : 2024-06-12 DOI: 10.1002/apxr.202400020

M. Pelayo Garcia, D. Gibson, K. L. McAughey, D.A. Hughes, C. García Núñez

{"title":"Ultra-Inclined Nanocolumnar ZnO Films Sputtered Using a Novel Masking Configuration Providing Controlled and Restricted Oblique Angle Deposition for Enhanced Sensing Platforms","authors":"M. Pelayo Garcia, D. Gibson, K. L. McAughey, D.A. Hughes, C. García Núñez","doi":"10.1002/apxr.202400020","DOIUrl":"10.1002/apxr.202400020","url":null,"abstract":"Oblique angle deposition (OAD) of inclined thin films is mainly performed using electron beam evaporation due to its accurate point source control over the incoming evaporated flux angle α, leading to thin films with a nanocolumnar inclination angle β. However, the utilization of magnetron sputtering (MS) with an extended source for OAD is not extensively studied and reported. This work presents a thorough analysis of ZnO inclined thin films deposited by a novel restricted DC-reactive MS-OAD technique. OAD-inclined films are deposited at α ranged 60°-88°, where incoming flux is restricted using a patented masking configuration enabling tunable control of deposited nanocolumn angular range. The described technique provides accurate control over the resulting β (99.5% reproducibility), allowing demonstrated βmax of 47.3°, close to theoretical limits predicted for ZnO. The approach discussed here probes enhanced control of β comparable to that observed in evaporation, however using an extended source, resulting in high-quality reproducible nanocolumnar-inclined films. The mentioned improvements result from the exploration of operational parameters such as magnetron power, working pressure, and chamber temperature, as well as the design of the restricting configuration and substrate holders and their influence on the resulting inclined thin film crystallinity, and morphology.","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"3 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.202400020","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141351454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Masthead (Adv. Phys. Res. 6/2024) 刊头（Adv. Phys. Res.）

Advanced Physics Research Pub Date : 2024-06-12 DOI: 10.1002/apxr.202470015

引用次数: 0

1D Photonic Topological Insulators Composed of Split Ring Resonators: A Mini Review (Adv. Phys. Res. 6/2024) 由分环谐振器组成的一维光子拓扑绝缘体：小型综述（Adv.）

Advanced Physics Research Pub Date : 2024-06-12 DOI: 10.1002/apxr.202470014

Zhiwei Guo, Yuqian Wang, Shaolin Ke, Xiaoqiang Su, Jie Ren, Hong Chen

引用次数: 0

Solar Spectrum Light-Driven Silicone-Based Fluidic Actuators 太阳光谱光驱动硅基流体执行器

Advanced Physics Research Pub Date : 2024-06-11 DOI: 10.1002/apxr.202400005

Ebrahim Shahabi, Majid Shabani, Fabian Meder, Barbara Mazzolai

{"title":"Solar Spectrum Light-Driven Silicone-Based Fluidic Actuators","authors":"Ebrahim Shahabi, Majid Shabani, Fabian Meder, Barbara Mazzolai","doi":"10.1002/apxr.202400005","DOIUrl":"10.1002/apxr.202400005","url":null,"abstract":"Soft materials that convert light into mechanical energy can create new untethered strategies for actuating soft robotics. Yet, the available light-driven materials are often incompatible with standard fabrication in soft robotics and restricted to shapes (e.g., sheets) that have limited capability for 3D deformation; often laser or focused light is required for actuation. Here, to address these challenges, a straightforward method for synthesizing sunlight-responsive fluidic actuators from off-the-shelf silicone precursors capable of expanding in 3D is developed. A liquid phase and activated carbon as photothermal elements are constrained in the elastomer. Solar spectral light triggers a liquid–gas phase transition creating sufficient pressure to overcome the internal elastic stress and actuate the material. The fluidic actuation is characterized under varying light conditions reaching expansion cycle times between ≈20–500 s, strains of 28%, and actuation stress of ≈1.3 MPa in different experiments. The materials were then used to exemplarily drive a mechanical switch, a liquid dispensing soft pump, a valve, and a bending actuator. As the described materials are easy to produce in a 5 min synthesis by standard molding techniques, it is believed that they are a promising opportunity for embodied energy converters in environmentally powered soft robots that respond to sunlight.","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"3 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.202400005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141358018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hysteresis, Rectification, and Relaxation Times of Nanofluidic Pores for Neuromorphic Circuit Applications 用于神经形态电路应用的纳米流体孔隙的磁滞、整流和弛豫时间

Advanced Physics Research Pub Date : 2024-06-04 DOI: 10.1002/apxr.202400029

Juan Bisquert

{"title":"Hysteresis, Rectification, and Relaxation Times of Nanofluidic Pores for Neuromorphic Circuit Applications","authors":"Juan Bisquert","doi":"10.1002/apxr.202400029","DOIUrl":"10.1002/apxr.202400029","url":null,"abstract":"Based on the emergence of iontronic fluidic components for brain-inspired computation, the general dynamical behavior of nanopore channels is discussed. The main memory effects of fluidic nanopores are obtained by the combination of rectification and hysteresis. Rectification is imparted by an intrinsic charge asymmetry that affects the ionic current across the nanopores. It is accurately described by a background conductivity and a higher conduction branch that is activated by a state variable. Hysteresis produces self-crossing diagrams, in which the high current side shows inductive hysteresis, and the low current side presents capacitive hysteresis. These properties are well captured by measurements of impedance spectroscopy that show the correspondent spectra in each voltage wing. The detailed properties of hysteresis and transient response are determined by the relaxation time of the gating variable, that is inspired in the Hodgkin-Huxley neuron model. The classification of effects based on simple models provides a general guidance of the prospective application of artificial nanopore channels in neuromorphic computation according to the measurement of complementary techniques.","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"3 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.202400029","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141387169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Universal Dimensionality of Ferroelectric Domain Walls in Ultrathin Films 超薄薄膜中铁电畴壁的普遍维度

Advanced Physics Research Pub Date : 2024-06-03 DOI: 10.1002/apxr.202400014

Somnath Kale, Adrian Petraru, Hermann Kohlstedt, Rohit Soni

引用次数: 0