Journal of Physics: Condensed Matter最新文献

Tunable higher-order non-Hermitian skin effect in the SSH topolectrical circuits.

IF 2.3 4区物理与天体物理

Journal of Physics: Condensed Matter Pub Date : 2025-03-31 DOI: 10.1088/1361-648X/adc35b

Lebin Wang, Wei Lin, Banxian Ruan, Yuanjiang Xiang, Xiaoyu Dai

引用次数: 0

Unraveling the topological phase in Zintl semiconductors RbZn₄X₃(X = P, As) through band engineering.

IF 2.3 4区物理与天体物理

Journal of Physics: Condensed Matter Pub Date : 2025-03-31 DOI: 10.1088/1361-648X/adc17e

Ramesh Kumar, Rajesh Kumar, Antik Sihi, Mukhtiyar Singh

{"title":"Unraveling the topological phase in Zintl semiconductors RbZn4X3(X = P, As) through band engineering.","authors":"Ramesh Kumar, Rajesh Kumar, Antik Sihi, Mukhtiyar Singh","doi":"10.1088/1361-648X/adc17e","DOIUrl":"10.1088/1361-648X/adc17e","url":null,"abstract":"We report the topological phase transition (TPT) in compounds of relatively less explored Zintl family RbZn4X3(X = P, As) viafirst-principlescalculation. These intermetallic compounds have already been experimentally synthesized in aKCu4S3-typetetragonal structure (P4/mmm) and reported to have a topologically trivial semimetallic nature with a direct band gap. We thoroughly studied the electronic structure, stability of RbZn4X3(X = P, As) and demonstrated the TPTs in these materials with external applied pressure and epitaxial strain. The dynamical and mechanical stabilities of these compounds are verified through phonon dispersion and Born stability criteria at ambient and TPT pressure/strain. A topologically non-trivial phase in RbZn4P3(RbZn4As3) is observed at 45 GPa (38 GPa) of hydrostatic pressure and 10% (8%) of epitaxial strain. This non-trivial phase is identified by band inversion betweenZn-sandP/As-pzorbitalsin the bulk band structure of these materials which is further confirmed using the surface density of states and Fermi arc contour in(001)-plane. The ℤ2topological invariants (ν0; ν1ν2ν3) for these materials are calculated using the product of parities of all filled bands (Kane and Mele model) and the evolution of Wannier charge centers (Wilson loop method). The change in values of (ν0; ν1ν2ν3) from (0; 000) to (1; 000), at the particular values of pressure and strain, is another signature of the TPT in these materials.","PeriodicalId":16776,"journal":{"name":"Journal of Physics: Condensed Matter","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143649435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Hysteresis and pyroelectric behaviour at isomorphic transition in green CsSnI₃.

IF 2.3 4区物理与天体物理

Journal of Physics: Condensed Matter Pub Date : 2025-03-31 DOI: 10.1088/1361-648X/adbead

Prem C Bharti, Priyanka A Jha, Pardeep K Jha, Prabhakar Singh

{"title":"Hysteresis and pyroelectric behaviour at isomorphic transition in green CsSnI3.","authors":"Prem C Bharti, Priyanka A Jha, Pardeep K Jha, Prabhakar Singh","doi":"10.1088/1361-648X/adbead","DOIUrl":"10.1088/1361-648X/adbead","url":null,"abstract":"Lead-free perovskite halide CsSnI3has emerged as a promising material for optoelectronic applications due to its direct bandgap (1.3-1.4 eV), high charge carrier mobility, and strong visible-spectrum absorption. Among its polymorphs, the green phase, with a favorable bandgap of ∼1.24 eV, demonstrates enhanced structural stability and resistance to phase degradation under ambient conditions. In this study, we investigate the green polymorph of CsSnI3and observe pyroelectric behavior, indicative of ferroelectric-like properties despite its globally centrosymmetric (Pa3-) cubic structure. Utilizing Piezo-force microscopy, dielectric measurements, impedance spectroscopy, and Raman spectroscopy, we identified local non-centrosymmetry influencing hysteresis and conduction properties. Impedance spectroscopy further reveals the interaction of grains and grain boundaries under a low AC electric field, both before and after light exposure and poling. A reduction in relaxation time with increasing temperature in poled samples is observed, while the combined effects of light exposure and poling result in an increased relaxation time. Our results indicate that local non-centrosymmetry plays a critical role in influencing hysteresis and conduction behavior. These findings highlight the importance of phase transitions and vibrational mode dynamics in optimizing the performance of CsSnI3-based devices, paving the way for their broader application in advanced optoelectronic technologies.","PeriodicalId":16776,"journal":{"name":"Journal of Physics: Condensed Matter","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143597159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

On-surface C-C coupling reactivity of carbon atoms in halogenated azulene.

IF 2.3 4区物理与天体物理

Journal of Physics: Condensed Matter Pub Date : 2025-03-31 DOI: 10.1088/1361-648X/adc35c

Wenxun Feng, Yanbo Li, Jianmin Huang, Junlong Ma, Xisha Zhang, Deqing Zhang, Qitang Fan, Bing Wang

引用次数: 0

Defects in oxide ultrathin films and 2D materials.

IF 2.3 4区物理与天体物理

Journal of Physics: Condensed Matter Pub Date : 2025-03-28 DOI: 10.1088/1361-648X/adc05f

Falko P Netzer, Svetlozar Surnev

引用次数: 0

Signatures of magnon-phonon coupling in frustrated double perovskite square lattices.

IF 2.3 4区物理与天体物理

Journal of Physics: Condensed Matter Pub Date : 2025-03-28 DOI: 10.1088/1361-648X/adc0da

Shalini Badola, Aprajita Joshi, Akriti Singh, Surajit Saha

{"title":"Signatures of magnon-phonon coupling in frustrated double perovskite square lattices.","authors":"Shalini Badola, Aprajita Joshi, Akriti Singh, Surajit Saha","doi":"10.1088/1361-648X/adc0da","DOIUrl":"10.1088/1361-648X/adc0da","url":null,"abstract":"Low-dimensional frustrated magnetic square networks feature a variety of unconventional phases with novel emergent excitations. Often these excitations are intertwined and manifest into intriguing phenomena, an area that has remained largely unexplored in square-lattice systems, especially, double perovskites (A2BB'O6). In this study, we explore these interactions between the fundamental excitations such as phonons and magnons in square-lattice Sr2CuTeO6, Sr2CuWO6, and Ba2CuWO6isostructural double perovskites that exhibit both short-ranged (Tmax) as well as long-ranged Néel antiferromagnetic (TN) transitions. Our Raman measurements at variable temperatures reveal an intriguing broad peak (identified as 2-magnon (2M)) surviving beyondTmaxfor W-based compositions contrary to the Te-based system, suggesting a key role of diamagnetic B'-site cation on their magnetism. The thermal response of 2M intriguingly shows signatures of correlation with phonons and control over their anharmonicity, depicting magnon-phonon interaction. Further, a few phonons exhibit anomalies across the magnetic transitions implying the presence of spin-phonon coupling. In particular, the phonon modes at ∼194 cm-1of Sr2CuTeO6and ∼168 cm-1of Sr2CuWO6, that show a strong correlation with the 2M, exhibit the strongest spin-phonon coupling suggesting their roles in mediating magnon-phonon interactions in these systems.","PeriodicalId":16776,"journal":{"name":"Journal of Physics: Condensed Matter","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143630342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Silica-Binding Peptides: Physical Chemistry and Emerging Biomaterials Applications.

IF 2.3 4区物理与天体物理

Journal of Physics: Condensed Matter Pub Date : 2025-03-28 DOI: 10.1088/1361-648X/adc6e2

Wilson Alberto Tárraga, Marilina Cathcarth, Agustin S Picco, Gabriel S Longo

引用次数: 0

Recent progress of flexible electrospun nanofibers based triboelectric nanogenerators for self-powered electronics.

IF 2.3 4区物理与天体物理

Journal of Physics: Condensed Matter Pub Date : 2025-03-28 DOI: 10.1088/1361-648X/adbfed

Han Li, Ziteng Xu, Jiaxun Zhang, Saisai Li, Shuoze Li, Xingwei Chen, Lijun Lu, Zhifeng Pan, Yanchao Mao

{"title":"Recent progress of flexible electrospun nanofibers based triboelectric nanogenerators for self-powered electronics.","authors":"Han Li, Ziteng Xu, Jiaxun Zhang, Saisai Li, Shuoze Li, Xingwei Chen, Lijun Lu, Zhifeng Pan, Yanchao Mao","doi":"10.1088/1361-648X/adbfed","DOIUrl":"10.1088/1361-648X/adbfed","url":null,"abstract":"The depletion of fossil fuels and the environmental impact of chemical batteries, coupled with the rapid proliferation of portable electronic devices and the Internet of Things, have created an urgent demand for high-performance, lightweight, and sustainable energy systems. Flexible triboelectric nanogenerators (TENGs) have emerged as a promising technology for powering self-sufficient devices, offering advantages such as simple structure, flexibility, low cost, and environmental adaptability. In particular, electrospun nanofiber-based TENGs stand out due to their enhanced surface area, superior charge collection capabilities, and improved mechanical durability. This review presents a comprehensive overview of recent advancements in electrospun nanofiber-based TENGs, focusing on material selection, structural design, fabrication techniques, and their integration into applications ranging from self-powered sensors to wearable electronics. Furthermore, the review discusses the challenges and future directions in optimizing the performance and scalability of TENGs to meet the growing demands of next-generation, energy-efficient technologies. It is hoped that this review will help researchers to gain a deeper understanding of this field and promote its development to a new stage.","PeriodicalId":16776,"journal":{"name":"Journal of Physics: Condensed Matter","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143615781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Robust half-metallic properties in two-dimensional CuCr₂Se₂X₂(X = Cl, Br, I).

IF 2.3 4区物理与天体物理

Journal of Physics: Condensed Matter Pub Date : 2025-03-28 DOI: 10.1088/1361-648X/adbeb0

Haimei Zhou, Yujing Guo, Shuai Liu, Yiran Peng, Wenhui Wan, Yong Liu, Yanfeng Ge

引用次数: 0

Topical Review: Electronic and optical properties ofKekul´e and other short wavelength spatialmodulated textures of graphene.

IF 2.3 4区物理与天体物理

Journal of Physics: Condensed Matter Pub Date : 2025-03-28 DOI: 10.1088/1361-648X/adc6e1

Elias Andrade, Ramon Carrillo-Bastos, Gerardo G Naumis

引用次数: 0