Article
Chemistry, Multidisciplinary
Huijie Hu, Weili Zhen, Zhilai Yue, Rui Niu, Feng Xu, Wanli Zhu, Keke Jiao, Mingsheng Long, Chuanying Xi, Wenka Zhu, Changjin Zhang
Summary: A mixed-dimensional BiSeI/GaSe van der Waals heterostructure with visible light detection ability and fast response time has been designed, providing a prospective approach to low-dimensional optoelectronic devices with rapid switching capabilities.
NANOSCALE ADVANCES
(2023)
Article
Materials Science, Multidisciplinary
Ankush Girdhar, Vinod Ashokan, N. D. Drummond, Klaus Morawetz, K. N. Pathak
Summary: The ground-state properties of ferromagnetic quasi-one-dimensional quantum wires at high density were studied using the quantum Monte Carlo method. It was observed that the peak in the static structure factor grows as the wire width decreases. The Tomonaga-Luttinger liquid parameter K-rho was obtained from the momentum density, with an increase of about 10% between different wire widths. The first-order random phase approximation (RPA) was used to examine the ground-state properties of finite-thickness wires, showing variations in correlation energy depending on the wire model. Comparisons were made with numerical evaluations for several values of wire widths and density parameters.
Article
Materials Science, Multidisciplinary
Priyanka Yogi, Julian Koch, Simone Sanna, Herbert Pfnuer
Summary: By studying the conductivity of the Au-covered Si(553) surface, nonlocal electronic correlations and thermal excitations were found to lead to phase transitions without long-range order, resulting in temperature-dependent modifications of the electronic band structure and density of states. This discovery is important for the manipulation of quasi-one-dimensional conductors.
Article
Materials Science, Multidisciplinary
Tatiana de Picoli, Zane Blood, Yuli Lyanda-Geller, Jukka I. Vayrynen
Summary: This theoretical work focuses on the nonreciprocity of the critical current in a quasi-one-dimensional superconductor, exploring its nature and factors affecting it. The authors define the critical current as the value at which the quasiparticle excitation gap closes, and provide a complementary description to Ginzburg-Landau theories of the effect.
Editorial Material
Chemistry, Physical
Xiao-Lei Shi, Zhi-Gang Chen
Summary: In a recent article published in Science Bulletin, Dong et al. reported a quasi-one-dimensional TlCu3Te2 bulk material with a high application-level room temperature ZT value of 1.3. This is attributed to the presence of a pancake-like Fermi pocket with a quasi-one-dimensional dispersion at the narrow band-gap edge, as well as a large, anharmonic quasi-one-dimensional lattice structure formed by heavy Tl+ ions and weakly bonded Cu+ ions.
Article
Chemistry, Multidisciplinary
Hao Jiang, Jingxuan Wei, Feiying Sun, Changbin Nie, Jintao Fu, Haofei Shi, Jiuxun Sun, Xingzhan Wei, Cheng-Wei Qiu
Summary: An enhanced photogating effect in a monolayer graphene photodetector based on a structured substrate is reported. The built-in potential is established by the mechanism of potential fluctuation engineering, resulting in a 100-fold improvement in device responsivity.
Article
Physics, Applied
Bahram Bahrami, Zeynab Kiamehr, Batol Sharafi, Mojtaba Goodarzi
Summary: In this research, the electron mobility in GaAs quasi-one-dimensional wires with the presence of ionized impurity at zero temperatures was investigated and compared with the mobility of a two-dimensional electron gas system. The Boltzmann transport equation was used in the relaxation time approximation, considering the ionized impurity potential. The focus was on ionized Coulomb scattering and the short-range disorder. Electron mobility was investigated based on related parameters and its diagram was drawn. The results were compared with electron mobility in completely two-dimensional electronic systems, showing convergence to the electron gas mobility.
MODERN PHYSICS LETTERS B
(2023)
Article
Materials Science, Multidisciplinary
Ru Yu, Qianlian Ruan, Feng Xiao, Xing Ming
Summary: Inorganic semiconductors have superior electrical properties, but their brittleness limits their application in devices such as wearables. Low-dimensional flexible inorganic semiconductors are promising in overcoming these limitations. The study focuses on a chain-like material and explores its stability, electronic structure, and optical properties.
RESULTS IN PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Yulu Liu, Ruoyu Chen, Zheneng Zhang, Marc Bockrath, Chun Ning Lau, Yan-Feng Zhou, Chiho Yoon, Sheng Li, Xiaoyuan Liu, Nikhil Dhale, Bing Lv, Fan Zhang, Kenji Watanabe, Takashi Taniguchi, Jianwei Huang, Ming Yi, Ji Seop Oh, Robert J. Birgeneau
Summary: We report the observation of unconventional band topology in exfoliated alpha-Bi4I4 field effect transistors and provide evidence for its origin. Our results indicate the presence of multiple gate-tunable boundary channels in this one-dimensional material, which may mediate topological superconductivity.
Review
Chemistry, Multidisciplinary
Muhammad Ahsan Iqbal, Haowei Xie, Lu Qi, Wei-Chao Jiang, Yu-Jia Zeng
Summary: Ferroelectric materials, such as BiFeO3, P(VDF-TrFE), and CuInP2S6, exhibit unique spontaneous electric polarization that can be reversed by external electric fields. The combination of ferroelectric and low-dimensional materials has sparked significant interest in solar cells, photodetectors, and nonvolatile memory. This article discusses the fundamental aspects of ferroelectric materials, their impact on optoelectronic devices, and future directions in this rapidly growing field.
Article
Polymer Science
Baodong Sun, Shaomin Wang, Mingyi Zhang
Summary: One-dimensional NiMoO4 nanofibers were successfully prepared and tested in a three-electrode system. The calcination temperature during preparation significantly affected the morphology and electrochemical performance. The sample calcinated at 500 degrees C showed better performance with higher specific capacitance and retention rate. The improved electrochemical performance can be attributed to the unique one-dimensional nanostructure, which enhances charge transfer efficiency and electrolyte ion diffusion speed.
Article
Materials Science, Multidisciplinary
X. C. Yang, X. Luo, J. J. Gao, Z. Z. Jiang, W. Wang, T. Y. Wang, J. G. Si, C. Y. Xi, W. H. Song, Y. P. Sun
Summary: Researchers conducted a detailed analysis of the transport properties in quasi-1D TaSe3 and observed interesting phenomena, including electron-hole compensation, PHE, and anisotropic magnetoresistance. The origin of PHE in TaSe3 was suggested to be related to resistivity anisotropy induced by differences in field-induced anisotropic scattering. PHE offers an effective method to understand the relationship between electronic transport properties and the topological structure in quasi-1D TSC TaSe3.
Article
Chemistry, Multidisciplinary
Feng Ke, Jiejuan Yan, Roc Matheu, Shanyuan Niu, Nathan R. Wolf, Hong Yang, Ketao Yin, Jiajia Wen, Young S. Lee, Hemamala Karunadasa, Wendy L. Mao, Yu Lin
Summary: By applying pressure, quasi-one-dimensional metallic properties were achieved in the three-dimensional metal halide CsSnI3. The pressure-induced hybridization between Sn-Sn and enhanced coupling between Sn-I within the chain resulted in band gap closure and the formation of conductive SnI6 distorted octahedral chains. Meanwhile, the minimal interactions between interchain I...I led to a highly anisotropic electronic structure.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
T. T. Saraiva, L. I. Baturina, A. A. Shanenko
Summary: Recent research has shown that the pair-exchange coupling between quasi-one-dimensional (Q1D) bands and conventional higher-dimensional bands in a multiband superconducting material can lead to the formation of a robust aggregate pair condensate, even with the presence of nearly shallow higher-dimensional bands. This sheds new light on the strong superconducting state observed in chain-like-structured superconducting materials A(2)Cr(3)As(3) (A = K, Rb, Cs).
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Physics, Multidisciplinary
Milosz Panfil, Sarang Gopalakrishnan, Robert M. Konik
Summary: Many experimentally relevant systems are quasi-one-dimensional, consisting of nearly decoupled chains, where weak interchain couplings play a crucial role in thermalizing the system. We developed a Boltzmann-equation formalism involving a collision integral that is asymptotically exact for any interacting integrable system, and applied it to study relaxation in coupled Bose gases in the Newton's cradle setup. We found that relaxation involves a broad spectrum of timescales and the Markov process governing relaxation at late times is gapless, leading to nonexponential approach to equilibrium even for spatially uniform perturbations.
PHYSICAL REVIEW LETTERS
(2023)
Article
Physics, Condensed Matter
Y. D. Li, W. L. Zhen, S. R. Weng, H. J. Hu, R. Niu, Z. L. Yue, F. Xu, W. K. Zhu, C. J. Zhang
Summary: Schottky junctions formed by high work function metals and semiconductors have important applications in electronics and optoelectronics. Traditional Schottky interfaces can be damaged during metal deposition, but this issue is avoided by using atomically smooth interfaces formed by two-dimensional metals and semiconductors. In this study, we fabricated and tested three types of MoS2 devices with different contact materials (PtTe2, Cr, and Au), and found that the van-der-Waals interface of PtTe2-MoS2 exhibited excellent performance in the OFF state and rectification ratio.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2022)
Article
Nanoscience & Nanotechnology
Weili Zhen, Xi Zhou, Shirui Weng, Wenka Zhu, Changjin Zhang
Summary: In this study, the optoelectronic properties of rhombohedral ZnIn2S4 nanosheets were systematically investigated. It was found that these nanosheets exhibited extremely low dark currents, high specific detectivity, short response time, and compatibility with high-frequency operation. Additionally, a gate-tunable characteristic was observed, which greatly improved the photoresponse. These properties make the R-ZIS nanosheets an ideal device for low-energy-consumption and high-frequency optoelectronic applications, with promising potential in optical neural networks and optical deep learning and computing.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Physics, Condensed Matter
W. L. Zhen, W. T. Miao, W. L. Zhu, C. J. Zhang, W. K. Zhu
Summary: In this paper, the synthesis of high-quality Ta2Ni3Se8 crystals without noble or toxic elements is reported, and photodetectors based on these crystals are fabricated and tested. The results show a broadband photoresponse from 405 nm to 1550 nm, along with relatively high photoresponsivity and specific detectivity, as well as a short response time. The dominant mechanism for photocurrent generation is determined to be the photo-bolometric effect, and the promising applications of Ta2Ni3Se8 in optical communications are highlighted.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2022)
Article
Physics, Condensed Matter
Yaodong Li, Rui Niu, Feng Xu, Weili Zhen, Hui Huang, Jingrong Wang, Wenka Zhu, Changjin Zhang
Summary: The influences of Mn substitution on the Sr site of Sr2IrO4 were investigated, focusing on the changes in structural parameters, transport, and magnetic properties. The incorporation of Mn resulted in an increase in the bond angle and a coexistence of super-exchange and double exchange interactions in certain samples. This led to severely localized electronic and magnetic states.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2022)
Article
Nanoscience & Nanotechnology
Guolin Feng, Hui Huang, Zhiqiang Wu, Yuyan Han, Changjin Zhang
Summary: We have observed a large anisotropic magnetoresistance (AMR) and planar Hall effect (PHE) in the topological superconducting candidate Cu0.05PdTe2. The AMR and PHE data in Cu0.05PdTe2 can be well explained by the semiclassical theory, confirming the relationship between the magneto-transport behaviors and the topological nature of Cu0.05PdTe2. The AMR ratio in Cu0.05PdTe2 is an order of magnitude larger than that in traditional ferromagnetic metals, suggesting its promising potential in future magnetoresistive devices with low power consumption.
Article
Physics, Applied
Hua Zhu, Hui Han, Dun Wu, Lin Wu, Wenhui Liu, Xi Tang, Junmin Xu, Changjin Zhang, Hui Li
Summary: The study investigates the hysteretic transitions in quasi-1D TiS3 microribbons by controlling the thickness and cooling rate. Two resistance hysteresis loops are observed at high and low temperatures, respectively. The high temperature transition is sensitive to thickness, while the low temperature transition is likely related to the CDW state and is robust against external perturbations.
APPLIED PHYSICS LETTERS
(2022)
Article
Chemistry, Physical
Rui-Chun Xiao, Yang Gao, Hua Jiang, Wei Gan, Changjin Zhang, Hui Li
Summary: This study reports the non-synchronous bulk photovoltaic effect (BPVE) in two-dimensional interlayer-sliding ferroelectric materials. The materials exhibit unswitchable in-plane BPVE and switchable out-of-plane BPVE. Symmetry analysis and first-principles calculations validate these BPVE properties. This finding extends the understanding of the relationship between ferroelectricity and BPVE.
NPJ COMPUTATIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Yaodong Li, Shirui Weng, Rui Niu, Weili Zhen, Feng Xu, Wenka Zhu, Changjin Zhang
Summary: A highly efficient and easily transferable poly(vinyl alcohol) (PVA)-assisted exfoliation method has been reported, allowing for the large-scale production of van der Waals materials. This approach overcomes the preparation bottleneck for the large-scale applications of two-dimensional (2D) materials.
Article
Physics, Applied
Hui Han, Hong Lin, Wei Gan, Yucheng Liu, Ruichun Xiao, Lei Zhang, Yang Li, Changjin Zhang, Hui Li
Summary: This study successfully manipulated the magnetism of MnPS3(1-x)Se3x compounds by substituting non-magnetic sulfur atoms with selenium atoms. The anisotropic antiferromagnetic transition of MnPS3(1-x)Se3x compounds were gradually modulated by controlling the selenium concentration, including the monotonic decrease in Neel temperature and Curie-Weiss temperature with increasing selenium concentration, and the selenium concentration dependence of a spin-flop process. Additionally, a magnetic phase diagram was established, revealing an exotic mixed antiferromagnetic state due to the competition between magnetic orderings in parent materials. These findings demonstrate the potential for engineering magnetic properties in magnetic van der Waal materials through chalcogenide ion substitution and provide insights for the design of magnetic devices in two-dimensional magnetic van der Waal materials.
APPLIED PHYSICS LETTERS
(2023)
Article
Physics, Applied
Feng Xu, Ning Wang, Wanli Zhu, ChangJin Zhang, Mingliang Tian, Fei Xue
Summary: Using dynamic cantilever magnetometry (DCM), the magnetic phases in H-out-of-plane and H-in-plane configurations of a FeGe slab were investigated. Two different configurations were studied: H-out-of-plane and H-in-plane. H-out-of-plane configuration showed the presence of Skyrmion phase (SkX), while H-in-plane configuration did not. The critical magnetic field for the transition from conical phase to field-polarized phase was higher in H-out-of-plane configuration compared to H-in-plane configuration. This work demonstrated the ability of DCM to probe magnetizations of thick or tilted magnetic films, which are difficult to measure using traditional microscopy techniques.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2023)
Article
Physics, Applied
Feng Xu, Hexuan Li, Ning Wang, Wenjun Wang, Jiemin Xu, Wanli Zhu, Yonglai Liu, Changjin Zhang, Zhe Qu, Fei Xue
Summary: This study used dynamic cantilever magnetometry and a Superconducting Quantum Interference Device to measure the magnetization and magnetic anisotropy of CrOCl flakes, and obtained the H-T phase diagram of CrOCl. In addition, several previously unreported transitions were discovered, which may arise from magnetic anisotropy.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Hui Han, Hong Lin, Wei Gan, Ruichun Xiao, Yucheng Liu, Jiefeng Ye, Limin Chen, Weiwei Wang, Lei Zhang, Changjin Zhang, Hui Li
Summary: Manipulation of spin orientation in magnetic material has attracted increasing research interest due to its potential in exploring magnetic interactions and designing electronic devices. We reported the field-induced spin reorientation below Neel temperature in the antiferromagnet MnPS3. The coexistence of ferromagnetic and antiferromagnetic phases in MnPS3 was observed at temperatures below -34K with external magnetic fields in both perpendicular and parallel configurations.