Applied Physics Letters最新文献_第5页

Fast ionic conductivity by thermal treatment with ultralow electronic transport in solid-state electrolyte Na3YCl6 固态电解质Na3YCl6超低电子输运热处理快速离子电导率研究

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2025-10-06 DOI: 10.1063/5.0293754

Tae-Il Ri, Suk-Gyong Hwang, Jin-Song Kim, Kum-Chol Ri, Chol-Jun Yu

引用次数: 0

A ultra-high-temperature free-piston thermoacoustic Stirling heat pump capable of achieving above 200 °C 超高温自由活塞热声斯特林热泵能够达到200°C以上

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2025-10-06 DOI: 10.1063/5.0292379

Longran Dai, Depeng Chang, Kaiqi Luo, Yanlei Sun, Jianying Hu, Ercang Luo

{"title":"A ultra-high-temperature free-piston thermoacoustic Stirling heat pump capable of achieving above 200 °C","authors":"Longran Dai, Depeng Chang, Kaiqi Luo, Yanlei Sun, Jianying Hu, Ercang Luo","doi":"10.1063/5.0292379","DOIUrl":"https://doi.org/10.1063/5.0292379","url":null,"abstract":"This study proposes and develops a prototype of a double-acting free-piston thermoacoustic Stirling ultra-high-temperature heat pump with bidirectional power flow regulation. By adjusting the phase relationship between the pistons from leading to lagging, the prototype overcomes the limitation of compressor performance imposed by temperature, enabling a heating supply temperature exceeding 200 °C. Meanwhile, benefiting from the inherent configuration of the double-acting design, the four-cylinder arrangement further enhances the system's power density, thereby improving its suitability for industrial heating applications. Experimental results demonstrate that the system achieves a substantial temperature lift from 25 to 166 °C, and within a temperature difference of 74 °C (from 45 to 119 °C), it attains a maximum coefficient of performance (COP) of 1.68. When the ambient temperature rises to 67 °C, the system delivers a heating supply temperature of 214 °C, with the corresponding COP and relative Carnot efficiency reaching 1.5% and 45.2%, respectively. These findings verify the potential of this system for high-temperature heat pump applications and highlight its advantages under extreme operating conditions. This work thus provides a solution for industrial high-temperature heat pumps, offering unique benefits in achieving large temperature lifts and high-temperature heating.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"59 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145235040","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-sensitivity surface acoustic wave magnetic field sensors enabled by amorphous Fe-Ga-B films with optimized boron content 利用优化硼含量的非晶Fe-Ga-B薄膜实现高灵敏度表面声波磁场传感器

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2025-10-06 DOI: 10.1063/5.0287101

Chenye Zhang, Shiyan Ma, Kailin Li, Chiyuan Wang, Guanying Wang, Yang Lu, Xianfeng Liang, Tianxiang Nan

{"title":"High-sensitivity surface acoustic wave magnetic field sensors enabled by amorphous Fe-Ga-B films with optimized boron content","authors":"Chenye Zhang, Shiyan Ma, Kailin Li, Chiyuan Wang, Guanying Wang, Yang Lu, Xianfeng Liang, Tianxiang Nan","doi":"10.1063/5.0287101","DOIUrl":"https://doi.org/10.1063/5.0287101","url":null,"abstract":"Magnetic field sensors based on acoustic resonators and the ΔE effect in ferromagnetic thin films enable compact size, high sensitivity, wide bandwidth, chip-scale field detection. The sensing performance of the device strongly depends on the soft magnetic and magnetostrictive properties of ferromagnetic films. Here, we systematically investigate the relationship between the magnetic field response of ΔE effect-based delay line surface acoustic wave (SAW) devices and the boron (B) doping concentration in Fe-Ga-B magnetostrictive thin films. Structural characterizations reveal a transition from a polycrystalline to a fully amorphous phase at a B content of 9.69 at. %, accompanied by a sharp reduction in both coercivity and in-plane anisotropy field. This transition leads to a step-like improvement in sensor performance. By optimizing the B composition, we identify a doping range that significantly enhances the performance of SAW devices, with a maximum phase shift of 60.81° at a B content of 12.33 at. % and a peak phase sensitivity of 5.95°/Oe at a B content of 18.84 at. %, providing a magnetic material design guideline for advancing magnetoelectric acoustic devices.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"31 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145228945","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

Ytterbium dopant-manipulated neuromorphic behavior for wavelength-dependent dual-modal photodetection 波长相关双峰光探测中掺镱操纵的神经形态行为

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2025-10-06 DOI: 10.1063/5.0295378

Sadeq Abbasi, Xiangyu Zhou, Lechuan Chen, Aobo Ren, Fan Cui, Kai Shen

{"title":"Ytterbium dopant-manipulated neuromorphic behavior for wavelength-dependent dual-modal photodetection","authors":"Sadeq Abbasi, Xiangyu Zhou, Lechuan Chen, Aobo Ren, Fan Cui, Kai Shen","doi":"10.1063/5.0295378","DOIUrl":"https://doi.org/10.1063/5.0295378","url":null,"abstract":"Integrating sensing and neuromorphic functions within a single low-power platform remains a key challenge in optoelectronic device design. We report a dual-modal perovskite photodetector by incorporating YbCl3 as a dopant, which simultaneously achieves neuromorphic behavior and conventional optoelectronic properties. Systematic characterizations of doping manipulation reveal that 0.5% YbCl3 can optimally modulate film crystallinity, enhance carrier transport, and tune charge dynamics. Notably, the 0.5% doped device exhibited distinct wavelength-dependent photoresponse, and hallmarks of depression-like neuromorphic behavior are were observed under pulsed 905 nm light excitation. This behavior is clearly supported by negative photoconductivity, gradual baseline modulation, and a prolonged post-illumination tail. However, these adaptive current dynamics are absent under 635 nm light illumination; the device instead demonstrated enhanced photoresponse, with responsivity increasing from 0.45 to 0.73 A/W and detectivity from 1.4 × 1012 to 5.1 × 1012 Jones. This spectral contrast originates from the wavelength-dependent activation of Yb3+-related trap states, confirmed by photoluminance measurements. These findings position YbCl3 doping as a versatile strategy for advancing perovskite photodetectors toward dual-modal photodetection, with ongoing studies exploring broader applicability.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"18 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145235416","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

Two-dimensional GeSe-based photodetector with ultra-broadband and polarized light detection 具有超宽带和偏振光探测的二维锗谱光电探测器

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2025-10-06 DOI: 10.1063/5.0287848

Jianyu Zhu, Jingyu Mao, Jianye Chen, Hafiza Saima Batool, Jingyi Hu, Chaoyun Song, Zhuo Wang, Dingguan Wang

引用次数: 0

Binder-free Co9S8/Ni7S6 heterostructure electrodes via one-step electrodeposition for high-performance coplanar micro-supercapacitors on paper 无粘结剂Co9S8/Ni7S6异质结构电极一步电沉积制备高性能共面微型超级电容器

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2025-10-06 DOI: 10.1063/5.0290469

Chi Zhang, Weixuan Shao, Jujian Liao, Di Wu, Xiaoxia Yao, Guannan Peng, Bo Liang, Mohammadreza Shokouhimehr, Zhengchun Liu

{"title":"Binder-free Co9S8/Ni7S6 heterostructure electrodes via one-step electrodeposition for high-performance coplanar micro-supercapacitors on paper","authors":"Chi Zhang, Weixuan Shao, Jujian Liao, Di Wu, Xiaoxia Yao, Guannan Peng, Bo Liang, Mohammadreza Shokouhimehr, Zhengchun Liu","doi":"10.1063/5.0290469","DOIUrl":"https://doi.org/10.1063/5.0290469","url":null,"abstract":"Coplanar micro-supercapacitors (CMSCs) are essential energy supply components for the development of wearable devices. However, inadequate energy density hinders their extensive utilization in flexible sensors and portable electronic gadgets. This study presents the design and preparation of a binder-free Co9S8/Ni7S6 electrode with a heterostructure, achieved by a one-step electrodeposition procedure to rectify existing deficiencies of CMSCs. Electrochemical evaluations are conducted to ascertain the appropriate amount of sulfur introduction, followed by the assembly of the optimized electrode and activated carbon into a hybrid supercapacitor. The resultant CMSC has an impressive energy density of 0.031 45 mW h cm−2 with 93.4% capacity retention after 8000 cycles. Notably, CMSC's capacity remains mostly unchanged even when folded, demonstrating its exceptional mechanical stability and usage. In addition, density functional theory simulations elucidate that the creation of heterostructures facilitates accelerated electron transportation in electrodes. This study provides a valuable viewpoint regarding fabrication techniques and electrode advancement of CMSCs.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"9 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145235098","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

Observation of excess polar magneto-optical Kerr effect signals in asymmetric Co/Tb-multilayers 非对称Co/ tb多层中过量极性磁光克尔效应信号的观测

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2025-10-06 DOI: 10.1063/5.0296892

Carmen Martín Valderrama, Mikel Quintana, Kazuhiko Tokunaga, Yoav Urbina, Yuichiro Kurokawa, Paolo Vavassori, Hiromi Yuasa, Andreas Berger

引用次数: 0

Harnessing Rashba–Edelstein effect at Pt/DyOx interface for efficient spin–orbit torques 利用Pt/DyOx界面的Rashba-Edelstein效应获得有效的自旋-轨道扭矩

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2025-10-06 DOI: 10.1063/5.0280515

Yixin Wang, Xinkai Xu, Dainan Zhang, Qinghui Yang, Huaiwu Zhang

{"title":"Harnessing Rashba–Edelstein effect at Pt/DyOx interface for efficient spin–orbit torques","authors":"Yixin Wang, Xinkai Xu, Dainan Zhang, Qinghui Yang, Huaiwu Zhang","doi":"10.1063/5.0280515","DOIUrl":"https://doi.org/10.1063/5.0280515","url":null,"abstract":"Spin–orbit torque (SOT) can be enhanced through the interfacial Rashba–Edelstein effect, which arises in systems with broken inversion symmetry and converts charge current into nonequilibrium spin accumulation, thus boosting spin current. Despite its known effects, the role of 4f-electron lanthanide oxides in influencing interfacial phenomena has remained largely unexplored. In this study, we investigate the potential of f-electron lanthanide oxides, particularly at the Pt/DyOx interface, to enhance SOT. The gradient oxidation structure of the 4f-electron rare-earth oxide DyOx was confirmed through ultra-high-precision line scanning electron energy loss spectroscopy. By employing spin–torque ferromagnetic resonance, we achieve an extraordinary SOT efficiency of ξFMR = 0.758 in the Pt/DyOx heterojunction, exceeding that of pure Pt by more than a factor of ten. This enhancement reduces the critical current density required for magnetization switching to 2.25–3.48 × 106 A·cm−2, which is only 15% of the current density needed for pure Pt. Beyond improving SOT efficiency, the integration of 4f rare-earth oxides at the interface provides an advanced technical pathway for developing CMOS-compatible and energy-efficient spintronic technologies.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"14 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145228944","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

A reconfigurable grating unit based on a Bragg-grating-assisted Mach–Zehnder interferometer 基于bragg光栅辅助Mach-Zehnder干涉仪的可重构光栅单元

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2025-10-06 DOI: 10.1063/5.0292055

Yaohui Sun, Dongyu Wang, Enze Zhou, Changheng Li, Haoyu Zhang, Guohua Hu, Binfeng Yun, Yiping Cui

{"title":"A reconfigurable grating unit based on a Bragg-grating-assisted Mach–Zehnder interferometer","authors":"Yaohui Sun, Dongyu Wang, Enze Zhou, Changheng Li, Haoyu Zhang, Guohua Hu, Binfeng Yun, Yiping Cui","doi":"10.1063/5.0292055","DOIUrl":"https://doi.org/10.1063/5.0292055","url":null,"abstract":"Bragg gratings possess unique functional attributes as fundamental integrated photonic devices. A reconfigurable grating unit based on a Bragg-grating-assisted Mach–Zehnder interferometer (GAMZI) is proposed as a versatile building block for programmable photonics. By integrating identical Bragg gratings into both arms of a thermo-optically tunable MZI, the device enables dynamic spectral reshaping—achieving bandwidth-tunable bandpass filters, phase-shifted gratings, and broadband filters with precise control over extinction ratios and bandwidths. The GAMZI architecture uniquely suppresses back-reflections while maintaining high port scalability, overcoming key limitations of conventional grating designs. Furthermore, a double-triangle recurrent network array using cascaded GAMZI units is demonstrated, enabling advanced functionalities such as ring-grating resonators, sampled gratings, and on-chip coarse wavelength division multiplexing. This work establishes a scalable and reconfigurable platform for on-chip spectral engineering, paving the way for adaptive optical signal processing in next-generation programmable photonic circuits.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"19 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145234984","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 self-powered MoS1.2Se0.8 lateral homojunction photodetector with broadband spectrum response 具有宽带频谱响应的高性能自供电MoS1.2Se0.8横向同结光电探测器

IF 4 2区物理与天体物理

Applied Physics Letters Pub Date : 2025-10-06 DOI: 10.1063/5.0284067

Junqi Wang, Shengyao Chen, Huan Liu, Yusong Qu, You Li, Lijun Ma, Xiaoshan Du, Shu Wang, Zhican Zhou, Cong Wang, Junjie Qi, Qian Liu

{"title":"High-performance self-powered MoS1.2Se0.8 lateral homojunction photodetector with broadband spectrum response","authors":"Junqi Wang, Shengyao Chen, Huan Liu, Yusong Qu, You Li, Lijun Ma, Xiaoshan Du, Shu Wang, Zhican Zhou, Cong Wang, Junjie Qi, Qian Liu","doi":"10.1063/5.0284067","DOIUrl":"https://doi.org/10.1063/5.0284067","url":null,"abstract":"Self-powered photodetector plays a key role in lower power consumption operation in the next-generation optoelectronic system. In recent years, two-dimensional (2D) materials van der Waals lateral homojunction has revealed exceptional potential in the self-powered photodetector. Here, we propose a n–n+ lateral homojunction photodetector based on the intrinsic thickness-dependent bandgap of 2D semiconductor material MoS1.2Se0.8. The photodetector has a pronounced self-powered feature with gate-tunable photovoltaic response and exhibits remarkable zero-bias performance with a photoresponsivity of 4.35 A/W and a specific detectivity of 1.49 × 1011 Jones. Furthermore, the photodetector maintains superior performance across a broad spectral range from 405 to 808 nm. This work not only validates the significant potential of thickness-modulated lateral homojunction in self-powered photodetection but also establishes a versatile platform for developing advanced optoelectronic devices through band structure engineering in 2D material systems.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"79 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145235033","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