IF 3.7 2区物理与天体物理

Physical Review B Pub Date : 2025-09-05 DOI: 10.1103/sbbm-hvc4

Xianghui Meng, Yanqing Shen, Xin Yang, Kunpeng Cai, Qing Ai, Yong Shuai, and ZhongXiang Zhou

{"title":"MBenes: A two-dimensional platform for high-temperature superconductivity via hydrogenation-induced Van Hove singularities","authors":"Xianghui Meng, Yanqing Shen, Xin Yang, Kunpeng Cai, Qing Ai, Yong Shuai, and ZhongXiang Zhou","doi":"10.1103/sbbm-hvc4","DOIUrl":"https://doi.org/10.1103/sbbm-hvc4","url":null,"abstract":"Hydrogenated two-dimensional (2D) materials have recently attracted significant attention for their potential to achieve high-temperature superconductivity via the conventional electron-phonon coupling. However, insufficient surface coordination often limits effective hydrogenation in traditional 2D systems. Here, we identify hexagonal MBenes as an ideal platform with the compact atomic stacking for constructing robust hydrogen-based networks. MBenes are boron-based analogs of MXenes, in which boron (B) atoms form the intermediate layer and transition metals (M) make up the outer layers. A comprehensive study of 53 MBene compounds, including pristine MB, monohydride MBH, and dihydride MBH2 phases, identifies 29 dynamically and mechanically stable structures. Hydrogen adsorption significantly enhances the superconducting critical temperature (𝑇c) in Sc-, Ti-, V-, Nb-, and Ta-based MBenes. Among them, VBH2 exhibits a record 𝑇c of 83 K for hydrogenated 2D superconductors. This enhancement is attributed to a Van Hove singularity (VHS) near the Fermi level, induced by strong hybridization between H 𝑠 and M 𝑑 orbitals. Biaxial strain calculations further confirm the decisive role of the VHS by showing a suppression of when the VHS shifts away from the Fermi level. Furthermore, except for (M = Sc, Ti, V, Nb) exhibit three-gap superconductivity, with anisotropy stemming from the dispersive nature of M orbitals. This research constructs a robust theoretical basis to probe high-temperature superconductivity and its fundamental origin in hydrogenated MBenes.","PeriodicalId":20082,"journal":{"name":"Physical Review B","volume":"39 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145007288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tunneling magnetoresistance effect in altermagnets 互磁体的隧穿磁阻效应

IF 3.7 2区物理与天体物理

Physical Review B Pub Date : 2025-09-05 DOI: 10.1103/t8b5-l859

Yu-Fei Sun, Yue Mao, Yu-Chen Zhuang, and Qing-Feng Sun

引用次数: 0

Radio continuum and H I 21-cm line observations of the nearby luminous infrared galaxy IRAS 17526+3253 附近发光红外星系IRAS 17526+3253的射电连续谱和H I 21厘米线观测

IF 6.5 2区物理与天体物理

Astronomy & Astrophysics Pub Date : 2025-09-05 DOI: 10.1051/0004-6361/202553911

Jianfeng Wu, Zhongzu Wu, Yulia Sotnikova, Bo Zhang, Yongjun Chen, Timur Mufakharov, Zhiqiang Shen

{"title":"Radio continuum and H I 21-cm line observations of the nearby luminous infrared galaxy IRAS 17526+3253","authors":"Jianfeng Wu, Zhongzu Wu, Yulia Sotnikova, Bo Zhang, Yongjun Chen, Timur Mufakharov, Zhiqiang Shen","doi":"10.1051/0004-6361/202553911","DOIUrl":"https://doi.org/10.1051/0004-6361/202553911","url":null,"abstract":"We present results from our European VLBI Network (EVN) and Giant Meterwave Radio Telescope (GMRT) observations of the radio continuum and spectral line emission in IRAS 17526+3253, along with an analysis of its arcsecond-scale radio properties using archival Very Large Array (VLA) data. The EVN observations detected radio continuum emission from both the northwest (NW) and southeast (SE) nuclei. The NW nucleus shows two components with high brightness temperatures and radio luminosities, likely indicating the presence of an active galactic nucleus (AGN) core and jet. Meanwhile, our EVN observation failed to detect the OH line emission, possibly due to radio frequency interference (RFI) and/or the emission being partly resolved out and below our detection limit. The multiband radio spectral energy distribution deviates from a single power law at low frequencies, suggesting low-frequency absorption. The GMRT spectral line data reveal both H I absorption and emission. The H I emission is diffuse and shows a velocity gradient from about 7500 km s−1 in the NW to 7800 km s−1 in the SE nucleus. On larger scales, the H I emission extends about 4′ along the NW–SE direction, with the SE extension matching the optical tidal tail. In addition, the weak H I absorption features show broad line profiles, possibly due to overlapping H I gas from the two nuclei. The aforementioned results are consistent with properties of intermediate-stage mergers reported in the literature.","PeriodicalId":8571,"journal":{"name":"Astronomy & Astrophysics","volume":"12 1","pages":""},"PeriodicalIF":6.5,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144995564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Room-temperature exciton-polariton lasing in semiconductor colloidal quantum wells 半导体胶体量子阱中的室温激子-极化激子激光

IF 15 1区物理与天体物理

Applied physics reviews Pub Date : 2025-09-05 DOI: 10.1063/5.0252579

Haixiao Zhao, Chenlin Wang, Minjie Zhou, Bing Jin, Xian Zhao, Baoqing Sun, Yuan Gao

{"title":"Room-temperature exciton-polariton lasing in semiconductor colloidal quantum wells","authors":"Haixiao Zhao, Chenlin Wang, Minjie Zhou, Bing Jin, Xian Zhao, Baoqing Sun, Yuan Gao","doi":"10.1063/5.0252579","DOIUrl":"https://doi.org/10.1063/5.0252579","url":null,"abstract":"Exciton-polariton lasing is the spontaneous coherent emission resulting from exciton-polariton Bose-Einstein condensation (BEC), facilitated by polariton-polariton simulated scattering. This process does not require population inversion, unlike conventional photonic lasers. II-VI/III-V colloidal semiconductor nanocrystals, known for their narrow emission linewidth and tunable emission wavelength, find broad applications in displays, LEDs, and detectors. However, achieving exciton-polariton lasing with these materials remains challenging. In this work, we investigate the exciton binding energy variations in CdSe colloidal quantum wells (CQWs) with different thicknesses and demonstrate the integration of CQWs in a face-down aligned configuration within a Fabry–Pérot cavity. This alignment enhances the exciton-photon coupling, leading to increased Rabi splitting energy and stronger coupling compared to randomly oriented CQWs, thereby facilitate exciton-polariton condensation. Due to the enhanced coupling with cavity fields and large exciton binding energy, we report the first observation of room-temperature exciton-polariton BEC and exciton-polariton lasing from CdSe CQWs. By systematically tuning the exciton-photon detuning, we achieve wavelength-tunable polariton lasing from 530 nm to 549 nm, including spectral regions without conventional optical gain, extending lasing beyond the intrinsic emission of 4 ML CQWs. These findings establish CdSe CQWs as effective platform for polariton-based optoelectronics.","PeriodicalId":8200,"journal":{"name":"Applied physics reviews","volume":"27 1","pages":""},"PeriodicalIF":15.0,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145002868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hong-Ou-Mandel interferometry with trapped polariton condensates 捕获极化子凝聚体的Hong-Ou-Mandel干涉测量

IF 3.7 2区物理与天体物理

Physical Review B Pub Date : 2025-09-05 DOI: 10.1103/nxx1-sc3x

S. Baryshev, I. Smirnov, I. Gnusov, T. Cookson, A. Zasedatelev, S. Kilin, and P. G. Lagoudakis

引用次数: 0

Dissecting multifractal detrended cross-correlation analysis 解剖多重分形去趋势互相关分析

IF 3.1 3区物理与天体物理

Physica A: Statistical Mechanics and its Applications Pub Date : 2025-09-05 DOI: 10.1016/j.physa.2025.130971

Borko Stosic, Tatijana Stosic

引用次数: 0

Thermodynamic Signature of Logical Depth in Quantum Circuits 量子电路中逻辑深度的热力学特征

IF 1 3区物理与天体物理

Foundations of Physics Pub Date : 2025-09-05 DOI: 10.1007/s10701-025-00883-w

Issam Ibnouhsein

引用次数: 0

ALMA survey of a massive node of the Cosmic Web at z ∼ 3 ALMA对z ~ 3宇宙网大质量节点的调查

IF 6.5 2区物理与天体物理

Astronomy & Astrophysics Pub Date : 2025-09-05 DOI: 10.1051/0004-6361/202554769

A. Pensabene, S. Cantalupo, W. Wang, C. Bacchini, F. Fraternali, M. Bischetti, C. Cicone, R. Decarli, G. Pezzulli, M. Galbiati, T. Lazeyras, N. Ledos, G. Quadri, A. Travascio

{"title":"ALMA survey of a massive node of the Cosmic Web at z ∼ 3","authors":"A. Pensabene, S. Cantalupo, W. Wang, C. Bacchini, F. Fraternali, M. Bischetti, C. Cicone, R. Decarli, G. Pezzulli, M. Galbiati, T. Lazeyras, N. Ledos, G. Quadri, A. Travascio","doi":"10.1051/0004-6361/202554769","DOIUrl":"https://doi.org/10.1051/0004-6361/202554769","url":null,"abstract":"Advancing our understanding of the formation and evolution of early massive galaxies and black holes requires detailed studies of dense structures in the high-redshift Universe. In this work, we present high angular resolution (≃0.″3) ALMA observations targeting the CO(4−3) line and the underlying 3 mm dust continuum toward the Cosmic Web node MQN01, a region identified through deep multiwavelength surveys as having one of the densest concentrations of galaxies and active galactic nuclei at cosmic noon. At the center of this structure, we identified a massive, rotationally supported disk galaxy located approximately at a projected-distance of ∼10 kpc and ∼ − 300 km s−1 from a hyper-luminous quasar at z = 3.2510. By accurately modeling the cold gas kinematics, we determined a galaxy dynamical mass of 2.5 × 1011 M⊙ within the inner ≃4 kpc and a high degree of rotational support of Vrot/σ ≈ 11. This makes it the first quasar companion galaxy confirmed as a massive, dynamically cold rotating disk at such an early cosmic epoch. Despite the small projected separation from the quasar host, we find no clear evidence of strong tidal interactions affecting the galaxy disk. This might suggest that the quasar is a satellite galaxy in the early stages of a merger. Furthermore, our spectroscopic analysis revealed a broad, blueshifted component in the CO(4−3) line profile of the quasar host, which may trace a powerful molecular outflow or kinematic disturbances induced by its interaction with the massive companion galaxy. Our findings show that rotationally supported cold disks are able to survive even in high-density environments of the early Universe.","PeriodicalId":8571,"journal":{"name":"Astronomy & Astrophysics","volume":"27 1","pages":""},"PeriodicalIF":6.5,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144995570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-performance spaceplates through anti-optical null medium 高性能空间板通过反光学零介质

IF 5 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-09-05 DOI: 10.1016/j.optlastec.2025.113856

Qin Liao , Yichao Liu , Fei Sun, Jiale Li, Zirui Xie, Jiahao Li, Xiaodan Zhao, Mingda Zhang

{"title":"High-performance spaceplates through anti-optical null medium","authors":"Qin Liao , Yichao Liu , Fei Sun, Jiale Li, Zirui Xie, Jiahao Li, Xiaodan Zhao, Mingda Zhang","doi":"10.1016/j.optlastec.2025.113856","DOIUrl":"10.1016/j.optlastec.2025.113856","url":null,"abstract":"<div><div>Metasurface lenses enable more compact optical systems compared to conventional refractive lenses, yet air gaps between components remain a critical size-limiting factor. To address this issue, the spaceplate concept has been proposed, which can replicate the free-space transfer function over shorter distances, thus enabling the optical system to be more compact. However, resonant spaceplate designs typically suffer from unavoidable trade-offs among numerical aperture (NA), transmittance, and compression ratio. We present a transformation-optics-designed spaceplate based on highly anisotropic anti-optical null medium. The inherent nonlocality of the anti-optical null medium naturally fulfills ideal spaceplate requirements while maintaining perfect impedance matching with air—eliminating Fabry-Pérot resonances and consequently removing the NA-compression ratio trade-off. Subsequently, we design a microwave-band spaceplate employing Zn-Ni-Fe/metal-wire multilayers in air, which achieves parameters approaching those of an ideal spaceplate and simultaneously satisfies (1) a space compression ratio of 6, (2) an NA of 0.72, and (3) transmittance > 0.9. The proposed spaceplate can be further extended to other frequency bands, such as optical wavelengths, demonstrating significant potential for applications in biological microscopy imaging and ultrathin flexible optoelectronic devices.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"192 ","pages":"Article 113856"},"PeriodicalIF":5.0,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144996248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Anomalous Maxwell-Garnett theory for photonic time crystals 光子时间晶体的反常麦克斯韦-加内特理论

IF 15 1区物理与天体物理

Applied physics reviews Pub Date : 2025-09-05 DOI: 10.1063/5.0275246

Zheng Gong, Ruoxi Chen, Hongsheng Chen, Xiao Lin

{"title":"Anomalous Maxwell-Garnett theory for photonic time crystals","authors":"Zheng Gong, Ruoxi Chen, Hongsheng Chen, Xiao Lin","doi":"10.1063/5.0275246","DOIUrl":"https://doi.org/10.1063/5.0275246","url":null,"abstract":"The Maxwell-Garnett theory, dating back to James Clerk Maxwell-Garnett's foundational work in 1904, provides a simple yet powerful framework to describe the inhomogeneous structure as an effective homogeneous medium, which significantly reduces the overall complexity of analysis, calculation, and design. As such, the Maxwell-Garnett theory enables many practical applications in diverse realms, ranging from photonics, acoustics, mechanics, thermodynamics, to materials science. It has long been thought that the Maxwell-Garnett theory of light in impedance-mismatched periodic structures is valid only within the long-wavelength limit, necessitating either the temporal or spatial period of light to be much larger than that of structures. Here, we break this long-held belief by revealing an anomalous Maxwell-Garnett theory for impedance-mismatched photonic time crystals beyond this long-wavelength limit. The key to this anomaly lies in the Fabry–Pérot resonance. We discover that under the Fabry–Pérot resonance, the impedance-mismatched photonic time crystal could be essentially equivalent to a homogeneous temporal slab simultaneously at specific discrete wavelengths, despite the temporal period of these light being comparable to or even much smaller than that of photonic time crystals.","PeriodicalId":8200,"journal":{"name":"Applied physics reviews","volume":"15 1","pages":""},"PeriodicalIF":15.0,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145002820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

物理与天体物理最新文献