Article
Chemistry, Multidisciplinary
Ernesto A. Hernandez-Morales, Abraham Colin-Molina, Jessica Arcudia, Federico J. Hernandez, Mario Rodriguez, Ruben A. Toscano, Rachel Crespo-Otero, Gabriel Merino, Braulio Rodriguez-Molina
Summary: In this study, we synthesized a series of molecular rotors by co-crystallizing ICZ derivatives with butyl and cyclohexyl substituents with DABCO. The structures of rotor I and III were confirmed through SCXRD, and variable-temperature SCXRD experiments indicated rotational motion with different activation energies. Our predictions also showed that the vibrations of the molecular rotors affect nonradiative decay rates and fluorescence quantum yields.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Chemistry, Physical
A. A. Gippius, A. V. Gunbin, A. V. Tkachev, S. V. Zhurenko, D. I. Fazlizhanova, S. A. Kuzmichev, T. E. Kuzmicheva, V. Yu Verchenko, A. V. Shevelkov
Summary: A comprehensive study of the intermetallic superconductor Mo8Ga41 reveals the presence of an inherent surface superconducting phase in addition to the bulk superconducting phase. The s-wave type single-gap superconducting behavior with enhanced electron-phonon coupling is observed in the bulk phase. The surface phase shows a lower superconducting gap value, indicating a weak-coupling BCS limit. These findings help explain the multi-gap behavior in Mo8Ga41.
Review
Chemistry, Multidisciplinary
Shufang Xue, Yunnan Guo, Yann Garcia
Summary: Spin crossover technology continues to attract worldwide attention, with many potential applications envisioned, but there are still challenges in achieving spin state switching between discrete molecular crystals in crystal materials.
Article
Multidisciplinary Sciences
Youngsik Kim, Hyekyoung Choi, Yeunhee Lee, Weon-kyu Koh, Eunhye Cho, Taewan Kim, Hamin Kim, Yong-Hyun Kim, Hu Young Jeong, Sohee Jeong
Summary: This study introduces InP tetrapod nanocrystals as a crystalline late intermediate in the synthesis pathway of covalent III-V nanocrystals, demonstrating their role in controlled growth and potential applications in tailored growth.
NATURE COMMUNICATIONS
(2021)
Article
Nanoscience & Nanotechnology
Pei Zeng, Zhiwen Shu, Shi Zhang, Huikang Liang, Yuting Zhou, Dedong Ba, Zhanzu Feng, Mengjie Zheng, Jianhui Wu, Yiqin Chen, Huigao Duan
Summary: This study successfully demonstrates an effective approach for forming ultrasmall metallic nanogaps based on the spontaneous nanoscale dewetting effect during metal deposition. By adjusting the initial opening size of the exposed resist template, tiny metallic nanogaps can be obtained. The method is effective for fabricating sub-10 nm silver nanostructure gaps and even sub-5 nm metallic gaps.
Article
Chemistry, Physical
Shengxue Zhou, Lina Liu, Shuang Cui, Xiaofan Ping, Dake Hu, Liying Jiao
Summary: A new method using chemical vapor deposition (CVD) with K2WS4 as growth precursor was developed for the growth of large and high-quality WS(2) monolayers, achieving a fast growth rate and high electrical performance. The obtained WS(2) flakes were 2D single crystals with low defect density, demonstrating the potential for producing high quality 2D semiconductors for future nanoelectronics.
Article
Energy & Fuels
Byungseok Seo, Youngsun Cha, Sangtae Kim, Wonjoon Choi
Summary: By controlling the air gap capacitance, the tunable triboelectric current duration can be adjusted to improve the performance of the generator and impact the lifetime of accompanying circuits. This study provides implications towards optimizing triboelectric generators in terms of charge density and broadened applicability.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Qingdong Lin, Stefano Bernardi, Babar Shabbir, Qingdong Ou, Mingchao Wang, Wenping Yin, Shiqi Liu, Anthony S. R. Chesman, Sebastian O. Furer, Guangyuan Si, Nikhil Medhekar, Jacek Jasieniak, Asaph Widmer-Cooper, Wenxin Mao, Udo Bach
Summary: This study demonstrates a method for controlling the crystallization of inorganic cesium lead halide perovskite microstructures, successfully tuning the structure of perovskite crystals from 0D to 2D to 3D by adjusting the water to dimethylsulfoxide ratios.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Multidisciplinary Sciences
B. Walls, A. A. Mazilkin, B. O. Mukhamedov, A. Ionov, I. A. Smirnova, A. V. Ponomareva, K. Fleischer, N. A. Kozlovskaya, D. A. Shulyatev, I. A. Abrikosov, I. V. Shvets, S. I. Bozhko
Summary: The study reveals a correlation between point defects and domain structure of a nickel oxide single crystal, providing insights into domain manipulation for various applications. Inhomogeneities are observed through diffraction and microscopy techniques, with structural relaxations induced by nickel vacancies predicted to be favorable for domain ordering. The study highlights the importance of understanding domain structure and point defects in tailoring material properties for specific applications.
SCIENTIFIC REPORTS
(2021)
Article
Multidisciplinary Sciences
Ji-Lei Shi, Hang Sheng, Xin-Hai Meng, Xu-Dong Zhang, Dan Lei, Xiaorui Sun, Hongyi Pan, Junyang Wang, Xiqian Yu, Chunsheng Wang, Yangxing Li, Yu-Guo Guo
Summary: By using Vegard's Slope as a guide for selecting sintering aids, size-controlled single-crystalline Ni-rich (SCNR) cathodes were successfully synthesized, which exhibit higher energy density and improved safety. The synthesis of large SCNR cathodes was achieved by promoting grain boundary migration and reducing surface energy through the migration of sintering aids. The fabricated SCNR cathodes demonstrated high electrode press density, volumetric energy density, and capacity retention, making them suitable for electric vehicles and portable devices.
NATIONAL SCIENCE REVIEW
(2023)
Article
Chemistry, Multidisciplinary
Bohan Chen, Wenxuan Zhu, Tian Wang, Bin Peng, Yiwei Xu, Guohua Dong, Yunting Guo, Haixia Liu, Houbing Huang, Ming Liu
Summary: In this study, high-quality freestanding single-crystalline PbZrO3 membranes were obtained using a water-soluble sacrificial layer method. PbZrO3/PVDF composites with different film thicknesses were constructed, and their dielectric properties and polarization response significantly improved, achieving a record-high energy density. Phase-field simulation showed that inserting PbZrO3 membranes effectively reduced breakdown paths, making single-crystalline AFE oxide membranes useful for composite-based high-power capacitors.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Multidisciplinary Sciences
Jiabiao Chen, Zhaochao Liu, Xinyue Dong, Zhansheng Gao, Yuxuan Lin, Yuyu He, Yingnan Duan, Tonghuai Cheng, Zhengyang Zhou, Huixia Fu, Feng Luo, Jinxiong Wu
Summary: Ultrathin Bi2SiO5 crystals grown by chemical vapor deposition (CVD) serve as excellent gate dielectric layers for 2D semiconductors, exhibiting high dielectric constant and large band gap. Vertically grown Bi2SiO5 can be easily transferred onto other substrates, facilitating ideal van der Waals integration with few-layer MoS2.
NATURE COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Ziying Tang, Huying Zheng, Bicheng Wang, Lisheng Wang, Yaqi Wang, Runchen Wang, Zhiren Qiu, Xianghu Wang, Shichen Su, Lin Li, Hai Zhu
Summary: In this report, a high performance beta-phase Ga203 single-crystalline film deep ultraviolet (DUV) solar-blind photodetector was successfully fabricated using the hybrid Ga/GaO buffer layer method. The detector exhibited low dark-state current and high UV photon responsibility. It also demonstrated ultrafast transient characteristics for DUV signals and was capable of capturing high contrast two-dimensional scanning images.
MATERIALS TODAY PHYSICS
(2023)
Article
Chemistry, Applied
Lyndi Kiple, Tyler Lee, Gillian Zavaglia, Tyler Meldrum
Summary: In this study, single-sided 1H NMR relaxometry was used to characterize the molecular environments in both dry and wet acrylic paints by their molecular mobilities. Two different relaxation behaviors were identified in dry paint, indicating regions of greater and lesser mobility, attributed to amorphous and crystalline domains of the semi-crystalline acrylic polymer. In wet paint, two different relaxation behaviors were characterized, hypothesized to come from unique molecular environments in the acrylic binding medium, along with two simultaneous exchange processes involving aqueous solvent.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Chemistry, Inorganic & Nuclear
Niklas Stegmann, Yitao Dai, Edward Nurenberg, Wolfgang Schmidt
Summary: A novel bottom-up preparation route for heptazine-based polymers (melon) was presented, showing the growth characteristics of isolated 1D melon strings in microporous templates. The study demonstrated the advantages and limitations of the bottom-up approach using microporous templates with different pore sizes, and clarified how the molecular size of heptazine units influenced the formation of melon in micropores of varying widths. The self-assembly of isolated 1D melon to stacked 3D structures offered a new experimental perspective to the controversial debate on the polymerization degree in 2D sheets of graphitic carbon nitride.
INORGANIC CHEMISTRY
(2021)
Article
Physics, Multidisciplinary
Ying Zhou, Long Chen, Gang Wang, Yu-Xin Wang, Zhi-Chuan Wang, Cong-Cong Chai, Zhong-Nan Guo, Jiang-Ping Hu, Xiao-Long Chen
Summary: In this study, the synthesis, magnetism, electrical resistivity, and specific heat capacity of the newly discovered quasi-one-dimensional NaMn6Bi5 superconductor were investigated. The abnormal Bi-Bi bond lengths, antiferromagnetic-like transitions, anisotropic resistivity, and unusually large Sommerfeld coefficient make NaMn6Bi5 a suitable platform to explore the interplay of magnetism and superconductivity.
CHINESE PHYSICS LETTERS
(2022)
News Item
Physics, Multidisciplinary
Kun Jiang, Jiangping Hu
Summary: The article discusses two demonstrations of a superconducting diode effect, showing the possibility of equivalent behavior in superconductors through different mechanisms.
Article
Physics, Multidisciplinary
Yuhao Gu, Kun Jiang, Xianxin Wu, Jiangping Hu
Summary: Researchers predict that a square lattice layer formed by [Co2N2] (2-) diamond-like units can exhibit high-temperature superconductivity. This study provides a new platform for establishing the superconducting mechanism of unconventional high-temperature superconductivity.
CHINESE PHYSICS LETTERS
(2022)
Article
Physics, Multidisciplinary
Yi Zhang, Yuhao Gu, Pengfei Li, Jiangping Hu, Kun Jiang
Summary: Motivated by recent progress in the superconductivity nonreciprocal phenomena, this study investigates the general theory of Josephson diodes, focusing on the asymmetric proximity process inside the tunneling barrier. From the perspective of symmetry breaking, there are two types of Josephson diodes: inversion breaking and time-reversal breaking. Voltage bias can effectively tune the proximity process in the inversion breaking case, while current flow can adjust the internal time-reversal breaking field in the time-reversal breaking case. These findings provide a comprehensive understanding and general principles for realizing Josephson diodes, including the recently discovered NbSe2/Nb3Br8/NbSe2 Josephson diodes.
Review
Multidisciplinary Sciences
Kun Jiang, Tao Wu, Jia-Xin Yin, Zhenyu Wang, M. Zahid Hasan, Stephen D. Wilson, Xianhui Chen, Jiangping Hu
Summary: This review discusses the recent progress on the experimental and theoretical studies of kagome superconductors AV(3)Sb(5), including the electronic properties, charge density wave state, time-reversal symmetry breaking, and superconducting properties. The authors aim to stimulate an expanded search for unconventional kagome superconductors.
NATIONAL SCIENCE REVIEW
(2023)
Article
Materials Science, Multidisciplinary
R. Yang, M. Corasaniti, C. C. Le, C. Yue, Z. Hu, J. P. Hu, C. Petrovic, L. Degiorgi
Summary: This study focuses on the charge dynamics of ferromagnetic Weyl semimetal PrAlGe and discovers the presence of electronic correlations and a significant reduction in Fermi velocity at low temperatures. The optical response undergoes changes, which are closely related to the electronic environment of Weyl fermions and the anomalous Hall conductivity.
NPJ QUANTUM MATERIALS
(2022)
Article
Physics, Multidisciplinary
Xingyu Jiang, Mingyang Qin, Xinjian Wei, Li Xu, Jiezun Ke, Haipeng Zhu, Ruozhou Zhang, Zhanyi Zhao, Qimei Liang, Zhongxu Wei, Zefeng Lin, Zhongpei Feng, Fucong Chen, Peiyu Xiong, Jie Yuan, Beiyi Zhu, Yangmu Li, Chuanying Xi, Zhaosheng Wang, Ming Yang, Junfeng Wang, Tao Xiang, Jiangping Hu, Kun Jiang, Qihong Chen, Kui Jin, Zhongxian Zhao
Summary: Superconductivity is related to the strange-metal state, and the resistivity in the strange metal significantly depends on the superconducting transition temperature. Unconventional superconductors usually exhibit a linear temperature dependence of resistivity (T-linear) in the low-temperature limit. The understanding of the relationship between the strange metal and superconductivity is crucial for further theoretical development, but comprehensive studies are lacking due to the difficulty in controlling the superconducting state. In this study, a typical strange-metal behavior, T-linear resistivity, linear-in-field magnetoresistance, and universal scaling of magnetoresistance, is observed in FeSe. The relationship between the T-linear resistivity coefficient and the critical temperature suggests a universal mechanism underlying T-linear resistivity and unconventional superconductivity.
Article
Materials Science, Multidisciplinary
Yipeng An, Juncai Chen, Zhengxuan Wang, Jie Li, Shijing Gong, Chunlan Ma, Tianxing Wang, Zhaoyong Jiao, Ruqian Wu, Jiangping Hu, Wuming Liu
Summary: In this study, a new kagome magnesium triboride (MgB3) superconductor is predicted, with a calculated critical temperature of about 12.2 K and 15.4 K under external stress, which is potentially the highest among the reported diverse kagome-type superconductors. Various exotic physical properties of the system, including van Hove singularity, flat-band, multiple Dirac points, and nontrivial topology, are revealed. The topological and nodal superconducting nature of MgB3 is unveiled using a recently developed symmetry indicators method. This study suggests that MgB3 can serve as a new platform to explore exotic physics in the kagome structure and search for more superconductors and topological materials with XY3-type kagome lattice.
PHYSICAL REVIEW MATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Ying Zhou, Long Chen, Yuxin Wang, Jinfeng Zhu, Zhongnan Guo, Chen Liu, Zhiying Guo, ChinWei Wang, Han Zhang, Yulong Wang, Ke Liao, Youting Song, Jia-ou Wang, Dongliang Chen, Jie Ma, Jiangping Hu, Gang Wang
Summary: A new series of compounds, ANi5Bi5.6+delta (where A = K, Rb, and Cs), have been discovered with a quasi-one-dimensional (Q1D) [Ni5Bi5.6+delta]- double-walled column and a coaxial inner one-dimensional Bi atomic chain. The compounds exhibit metallic behaviors with strong electron correlation, and the Sommerfeld coefficient is enhanced with the increasing cationic radius. The substitution of Ni for Mn in ANi5Bi5.6+delta results in enhanced intercolumn distances and strong diamagnetic susceptibilities.
INORGANIC CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Yi Zhang, Yuhao Gu, Hongming Weng, Kun Jiang, Jiangping Hu
Summary: We investigate the strong electron-electron correlation effects in two-dimensional van der Waals materials Nb3X8 (X = Cl, Br, I). The monolayers Nb3X8 are close to the strong correlation limit and can be described by a half-filled single band Hubbard model with U/W ratio approximating to 5-10. Mott and magnetic transitions are calculated using the slave boson mean-field theory, and a dx2-y2 + idxy superconducting pairing instability is found upon doping the Mott state. A tunable bilayer Hubbard system is also constructed for two sliding Nb3X8 layers, showing a crossover between band insulator and Mott insulator.
Article
Materials Science, Multidisciplinary
Kun Jiang, Ziyue Qi, Hongming Weng, Jiangping Hu
Summary: In this study, we examine the properties of obstructed atomic insulators under correlation and find that the obstruction properties persist even at high correlation levels. This suggests that the obstructed atomic insulator phase can transition to its Mott phase seamlessly without undergoing a Mott transition.
Article
Optics
Sibo Guo, Chenxiao Dong, Fuchun Zhang, Jiangping Hu, Zhesen Yang
Summary: We study the robustness of the non-Hermitian skin effect in dissipative ultracold fermions with spin-orbit coupling, and reveal a dynamic sticky effect in our system, which shares a common physical origin with the non-Hermitian skin effect. Our work paves the way for exploring novel physical responses of the non-Hermitian skin effect in quantum systems.
Article
Physics, Multidisciplinary
Feng Xi-Lin, Jiang Kun, Hu Jiang-Ping
Summary: The newly discovered Kagome superconductors have provided a platform for investigating the interplay between topological property, superconductivity, and geometrical frustration. Significant progress has been made in understanding their properties, including time-reversal-symmetry-breaking, charge density wave, electronic nematicity, and pair density wave. However, many questions regarding the microscopic origins of these properties remain to be answered.
ACTA PHYSICA SINICA
(2022)
Article
Materials Science, Multidisciplinary
Xuebo Zhou, Hongxiong Liu, Wei Wu, Kun Jiang, Youguo Shi, Zheng Li, Yu Sui, Jiangping Hu, Jianlin Luo
Summary: Anomalous Hall effect, anomalous Nernst effect, and anomalous thermal Hall effect were observed in CsV3Sb5. The longitudinal thermal conductivity deviates largely from its electronic contribution, while the thermal Hall conductivity is roughly consistent with the Wiedemann-Franz law. Large phonon contribution and other charge neutral contributions were identified in the thermal conductivity and Hall conductivity.
Article
Materials Science, Multidisciplinary
Yuhao Gu, Yi Zhang, Xilin Feng, Kun Jiang, Jiangping Hu
Summary: This study reveals that the superconducting gap structures in transition-metal-based kagome metals are caused by the coexistence of time-reversal symmetry breaking and conventional fully gapped superconductivity. The symmetry protects the edge states that arise on the domains of lattice symmetry breaking order to remain seamless in proximity to conventional pairing.
