Article
Materials Science, Multidisciplinary
Sijin Long, Long Chen, Yuxin Wang, Ying Zhou, Shu Cai, Jing Guo, Yazhou Zhou, Ke Yang, Sheng Jiang, Qi Wu, Gang Wang, Jiangping Hu, Liling Sun
Summary: One universal feature of unconventional superconductors is the development of superconducting state near the antiferromagnetic state. In this study, we report the pressure-induced superconductivity in CsMn6Bi5 compound and find that the transition from antiferromagnetic to superconducting state is electronic in origin. Comparison with previous experiments on related compounds reveals the genetic flipping behavior of antiferromagnetic-superconducting states at similar critical pressures.
Article
Chemistry, Multidisciplinary
Tianping Ying, Tongxu Yu, Yu-Shien Shiah, Changhua Li, Jiang Li, Yanpeng Qi, Hideo Hosono
Summary: The combination of high-entropy alloys and van der Waals materials introduces a new category known as high-entropy van der Waals materials, which exhibit diverse metallic constitutions and layered structures. These materials show a wide range of physical properties and potential practical applications, making them promising for high-throughput design of new systems.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Inorganic & Nuclear
Peter P. Edwards, Nicholas C. Pyper, Xiangyu Jie, Daniel R. Slocombe, C. Richard A. Catlow, M. Saiful Islam, Peter J. Dobson
Summary: This passage discusses the contributions and observations of Miguel Alario-Franco in the field of high-temperature superconductivity. He highlights the need for a new theme to unify chemistry and physics in this field and reviews recent research advances.
JOURNAL OF SOLID STATE CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
G. N. Bremm, M. A. Continentino, T. Micklitz
Summary: This study investigates the crossover from the weak coupling BCS state to the strong coupling BEC state in a two-band superconductor with orbitals of opposite parity in the metallic state by analyzing the impact of hybridization strength. It shows that the crossover strongly depends on the ratio of effective masses, with transitions favored in systems with one dispersive and one flat band. The critical temperature in the strong coupling regime is calculated by including the effect of thermal pair fluctuations in a one-loop approximation.
Article
Physics, Multidisciplinary
Alexandre Jaoui, Ipsita Das, Giorgio Di Battista, Jaime Diez-Merida, Xiaobo Lu, Kenji Watanabe, Takashi Taniguchi, Hiroaki Ishizuka, Leonid Levitov, Dmitri K. Efetov
Summary: This study presents transport measurements in superconducting MATBG, where the correlated insulator states are suppressed by screening. The uninterrupted metallic ground state exhibits linear resistivity and Planckian scattering rates. A quantum-critical phase dominates the metallic ground state in a continuum of doping.
Article
Materials Science, Multidisciplinary
Chi Zhang, Tao Hu, Teng Wang, Yufeng Wu, Aobo Yu, Jianan Chu, Han Zhang, Xuefu Zhang, Hong Xiao, Wei Peng, Zengfeng Di, Shan Qiao, Gang Mu
Summary: The ultrathin films of the iron-arsenic superconductor KCa2Fe4As4F2 exhibit two-dimensional superconductivity, with lower critical temperature, wider transition width, higher anisotropy, and broader flux liquid region under in-plane magnetic field. Additionally, the samples follow the Tinkham model for angle dependent upper critical field, showing significant dimensionality effects different from cuprate superconductors.
Article
Chemistry, Physical
Kyuil Cho, Marcin Konczykowski, Makariy A. Tanatar, Igor I. Mazin, Yong Liu, Thomas A. Lograsso, Ruslan Prozorov
Summary: Low-temperature variable-energy electron irradiation induced non-magnetic disorder in a hole-doped iron-based superconductor Ba1-xKxFe2As2, x = 0.80. The resistivity of the sample increased linearly with irradiation fluence, indicating the creation of uncorrelated dilute point-like disorder. The predominant creation of defects in the iron sublattice was confirmed by comparing with calculated partial cross-sections. Simultaneously, the superconducting transition temperature was monotonically suppressed due to the total scattering rate, supporting the assumption of the dominant role of the iron sub-lattice in iron-based superconductors.
Review
Chemistry, Multidisciplinary
Xin Gui, Bing Lv, Weiwei Xie
Summary: This review highlights important superconducting families, their crystal structure, chemical bonding, and superconductivity correlations, emphasizing on the use of chemical approaches in the discovery of new superconductors. It also provides technical strategies for synthesizing superconductors and outlines the important role of chemists in reporting and studying new superconductors in the field of superconductivity.
Article
Physics, Condensed Matter
Tomoki Kobayashi, Hiroki Nakagawa, Hiroki Ogawa, Fuyuki Nabeshima, Atsutaka Maeda
Summary: In this study, FeSe/SrTiO3 films with thicknesses of 4-19 nm are grown using pulsed laser deposition and their magneto-transport properties are investigated. The thinnest film (4 nm) shows a negative Hall effect, indicating electron transfer into FeSe from the SrTiO3 substrate. This is consistent with previous reports on ultrathin FeSe/SrTiO3 grown by molecular beam epitaxy. The upper critical field exhibits large anisotropy ( ?> 3).
JOURNAL OF PHYSICS-CONDENSED MATTER
(2023)
Article
Electrochemistry
Po Hsiang Wen, Hao Yuan Zheng, Ting-Jen Hsueh
Summary: This study demonstrates the synthesis of WO3 nanoparticles through ultrasonic wave grinding, and the fabrication of a WO3-NPs/MEMS gas sensor. The experimental results indicate that the WO3-NPs/MEMS gas sensor exhibits a superior response to NH3 compared to CO, CO2, and SO2. The sensor shows good stability and reproducibility, with an average sensing response of about 16% and an inaccuracy of <+/- 0.5% when operated at 142 degrees C with 1.3 ppm NH3 gas. The WO3-NPs sensor outperforms the WO3-thin film and original WO3 powder sensors in terms of NH3 sensing response.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
H. Pfau, M. Yi, M. Hashimoto, T. Chen, P-C Dai, Z-X Shen, S-K Mo, D. Lu
Summary: The study investigates the influence of electronic nematicity on quasiparticle coherence in detwinned FeSe using ARPES, finding an anisotropy between dxz and dyz orbitals and a more coherent dxz orbital compared to the dyz orbital. This observation contrasts with earlier predictions and underscores the importance of electronic correlations in describing nematicity.
Article
Materials Science, Multidisciplinary
Santanu Pakhira, Y. Lee, Liqin Ke, V Smetana, A- Mudring, Thomas Heitmann, David Vaknin, D. C. Johnston
Summary: CaCo2-yAs2 is a unique itinerant system with strong magnetic frustration, wherein Ni substitutions for Co lead to enhanced ferromagnetic fluctuations and suppressed antiferromagnetic order. Density-functional theory (DFT) calculations confirm the enhancement of FM fluctuations in Ca(Co1-xNix)(2-y)As-2.
Article
Materials Science, Multidisciplinary
Jianzhou Zhao, Yilin Wang, Xiaolong Feng, Shengyuan A. Yang
Summary: By comparing the electronic structures of LaFe2As2 and CaFe2As2, researchers found that they are similar in terms of electronic correlation and Fermi-surface topology, suggesting that superconductivity may also be induced in the collapsed phase of LaFe2As2 under similar conditions as for CaFe2As2.
Article
Physics, Applied
T. Kobayashi, H. Ogawa, F. Nabeshima, A. Maeda
Summary: In this study, FeSe/STO films with a thickness of 5-30 nm were fabricated using pulsed laser deposition (PLD) technique. The grown films exhibit superconductivity with a higher onset Tc compared to bulk FeSe. The observed Tc values increase as the film thickness decreases, except for films thinner than 10 nm. These results indicate the realization of interface superconductivity in PLD-grown FeSe/STO.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2022)
Article
Physics, Condensed Matter
Zhen Liu, Tao Han, Mengqin Liu, Shuting Huang, Zongyuan Zhang, Mingsheng Long, Xingyuan Hou, Lei Shan
Summary: In this study, an enhanced superconductivity was achieved in a topological superconductor candidate PdTe2 through electrochemical gating. The superconducting transition temperature was increased by protonation induced by ionic gating at room temperature. Furthermore, a further enhancement in superconductivity was observed after the gated samples were placed in a glove box for 2 months, possibly due to the diffusion of protons.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2022)
Article
Chemistry, Multidisciplinary
Jianhui Yang, Qiuju Zhang, Liang Chen, Gang Wang, Xiaolong Chen
Article
Chemistry, Multidisciplinary
Shumeng Chi, Zhilin Li, Ying Xie, Yongguang Zhao, Zeyan Wang, Lei Li, Haohai Yu, Gang Wang, Hongming Weng, Huaijin Zhang, Jiyang Wang
ADVANCED MATERIALS
(2018)
Article
Materials Science, Multidisciplinary
Gang Wang, S. Manni, Qisheng Lin, Patrick McVey, Robert S. Houk, Liming Wu, Sergey L. Bud'ko, Paul C. Canfield
PHILOSOPHICAL MAGAZINE LETTERS
(2018)
Article
Materials Science, Multidisciplinary
Gang Wang, William R. Meier, Warren E. Straszheim, Joshua Slagle, Sergey L. Bud'ko, Paul C. Canfield
PHYSICAL REVIEW MATERIALS
(2018)
Article
Chemistry, Inorganic & Nuclear
Xiao Fan, Hongxiang Chen, Jun Deng, Xiaoning Sun, Linlin Zhao, Long Chen, Shifeng Jin, Gang Wang, Xiaolong Chen
INORGANIC CHEMISTRY
(2019)
Article
Chemistry, Inorganic & Nuclear
Long Chen, Linlin Zhao, Xiaole Qiu, Qinghua Zhang, Kai Liu, Qisheng Lin, Gang Wang
Summary: The new manganese-based quasi-one-dimensional material RbMn6Bi5 exhibits unique crystal structure and physical properties, including antiferromagnetism. It shows significant resistivity anisotropy and is confirmed to be a quasi-one-dimensional metal with possible helical antiferromagnetic configuration.
INORGANIC CHEMISTRY
(2021)
Article
Physics, Multidisciplinary
Haiyuan Zou, Yi Cui, Xiao Wang, Z. Zhang, J. Yang, G. Xu, A. Okutani, M. Hagiwara, M. Matsuda, G. Wang, Giuseppe Mussardo, K. Hodsagi, M. Kormos, Zhangzhen He, S. Kimura, Rong Yu, Weiqiang Yu, Jie Ma, Jianda Wu
Summary: The study presents V-51 NMR and inelastic neutron scattering (INS) measurements on the quasi-1D antiferromagnet BaCo2V2O8 under transverse field. It reveals a 1D quantum critical point (QCP) at H-c(1D) approximately 4.7 T and provides an unambiguous experimental realization of the massive E-8 phase in the compound. The results offer a new experimental route for exploring the dynamics of quantum integrable systems and physics beyond integrability.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Multidisciplinary
Yuzhe Ma, Yulong Wang, Gang Wang
Summary: In this study, Mg3Bi2 single crystals were grown and their magneto-transport properties were systematically investigated. Interesting magneto-transport phenomena, such as large transverse magnetoresistance anisotropy and cusp-like magnetoresistance, were observed. The results suggest that Mg3Bi2 may be a type-II nodal-line semimetal with novel transport properties.
Article
Chemistry, Multidisciplinary
Hongxiang Chen, Jiacheng Gao, Long Chen, Gang Wang, Hang Li, Yulong Wang, Juanjuan Liu, Jinchen Wang, Daiyu Geng, Qinghua Zhang, Jieming Sheng, Feng Ye, Tian Qian, Lan Chen, Hongming Weng, Jie Ma, Xiaolong Chen
Summary: This study presents the hourglass fermion surface state and exotic phases in the newly discovered ErAsS single crystals. In the paramagnetic phase, ErAsS is expected to be a TCI with hourglass fermion surface state, which is experimentally confirmed by observed band structures. Below a certain temperature, ErAsS enters a collinear antiferromagnetic state, and an intermediate incommensurate magnetic state appears in a narrow temperature range.
ADVANCED MATERIALS
(2022)
Article
Physics, Multidisciplinary
Yuzhe Ma, Yulong Wang, Gang Wang
Summary: CaBi2 has been experimentally confirmed as a superconductor with a transition temperature of 2 K, and identified as a topological insulator through spin- and angle-resolved photoemission spectroscopy, providing a potential platform for studying the interplay between superconductivity and topology. However, the detailed transport properties of CaBi2 single crystal have not been explored. In this study, the magneto-transport properties of CaBi2 single crystal grown by a flux method were systematically investigated, revealing a magnetic-field-induced upturn behavior with a plateau in resistivity at low temperature. Additionally, an extremely large and non-saturating magnetoresistance up to approximately 15000% at 3 K and 12 T was achieved.
Article
Chemistry, Multidisciplinary
Xue Han, Zhongnan Guo, Long Chen, Cheng Cao, Fan Sun, Gang Wang, Wenxia Yuan
Summary: The two-dimensional semiconductor Nb2GeTe4 exhibits high electron mobility and unusual transverse negative magnetoresistance, making it a competitive material for the design of 2D electronic devices. With an optical band gap of approximately 0.39 eV, Nb2GeTe4 shows exceptional properties at room temperature. Additionally, an anomalous negative magnetoresistance behavior is observed at low temperatures, with a maximum MR reaching around -31% at 5 K and 5 T.
MATERIALS CHEMISTRY FRONTIERS
(2021)
Article
Materials Science, Multidisciplinary
Long Chen, Cheng Cao, Hongxiang Chen, Jiangang Guo, Jie Ma, Jiangping Hu, Gang Wang
Summary: The crystal structure, magnetic, electronic, and thermal properties of Sr(Fe1-xMnx)(2)As-2 crystals grown by transition metal arsenide flux have been systematically investigated. A miscibility gap and suppression of spin density wave order for certain x values were observed, with no real-space phase separation of Mn and Fe detected. No superconducting signal was observed in the entire composition range.
Article
Materials Science, Multidisciplinary
Ning Liu, Shifeng Jin, Liwei Guo, Gang Wang, Hezhu Shao, Liang Chen, Xiaolong Chen
Article
Physics, Multidisciplinary
Shumeng Chi, Zhilin Li, Haohai Yu, Gang Wang, Shuxian Wang, Huaijin Zhang, Jiyang Wang
ANNALEN DER PHYSIK
(2017)
Article
Materials Science, Multidisciplinary
Zhiping Lin, Gang Wang, Congcong Le, Huaizhou Zhao, Ning Liu, Jiangping Hu, Liwei Guo, Xiaolong Chen
