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Effect of ALD temperature on the polarization switching dynamics of BEOL-compatible Hf0.5Zr0.5O2 ferroelectric film ALD 温度对 BEOL 兼容型 Hf0.5Zr0.5O2 铁电薄膜极化切换动力学的影响
IF 4 2区 物理与天体物理
Applied Physics Letters Pub Date : 2025-04-14 DOI: 10.1063/5.0253330
Xiaopeng Li, Lu Tai, Xiaoyu Dou, Pengpeng Sang, Xuepeng Zhan, Jixuan Wu, Wei Wei, Jiezhi Chen
{"title":"Effect of ALD temperature on the polarization switching dynamics of BEOL-compatible Hf0.5Zr0.5O2 ferroelectric film","authors":"Xiaopeng Li, Lu Tai, Xiaoyu Dou, Pengpeng Sang, Xuepeng Zhan, Jixuan Wu, Wei Wei, Jiezhi Chen","doi":"10.1063/5.0253330","DOIUrl":"https://doi.org/10.1063/5.0253330","url":null,"abstract":"HfO2-based ferroelectric materials offer a promising alternative for next-generation memory technology. Atomic layer deposition (ALD) temperature can significantly influence the physical and chemical properties of films, enabling compatibility with back-end-of-line (BEOL) thermal budgets; however, it also inevitably affects polarization switching dynamics, warranting further investigation. In this work, BEOL-compatible Hf0.5Zr0.5O2 (HZO) films are fabricated at various ALD temperatures, and their polarization switching dynamics is characterized using the nucleation-limited switching model. Higher ALD temperatures result in faster polarization switching speeds and reduced asymmetry during program and erase stages, while lower ALD temperatures promote uniform polarization, although capacitors across all temperatures display similar remnant polarization (Pr) values after wakeup. Detailed analysis suggests that the influence of ALD temperature on preexisting oxygen vacancies (Vo) may be the underlying factor.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"60 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143832095","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
Thermal magnetoresistance from magnon scattering from a domain wall in an antiferromagnetic insulator 反铁磁绝缘体畴壁磁振子散射的热磁电阻
IF 4 2区 物理与天体物理
Applied Physics Letters Pub Date : 2025-04-14 DOI: 10.1063/5.0254817
Ehsan Faridi, Se Kwon Kim, Giovanni Vignale
{"title":"Thermal magnetoresistance from magnon scattering from a domain wall in an antiferromagnetic insulator","authors":"Ehsan Faridi, Se Kwon Kim, Giovanni Vignale","doi":"10.1063/5.0254817","DOIUrl":"https://doi.org/10.1063/5.0254817","url":null,"abstract":"We theoretically investigate magnon heat transport in an antiferromagnetic (AFM) insulator containing a domain wall (DW) in the presence of a magnetic field applied along the easy axis. We show that the intrinsic spin of the DW couples to the external magnetic field, which modifies the transmission of spin wave through the DW. Applying the magnetic field lifts the degeneracy between two AFM magnon modes and results in different occupation numbers for the two magnon modes. Combined with the finite reflection of a narrow domain wall, this is found to have a significant impact on the magnon heat transport, giving rise to thermal magnetoresistance. Our findings suggest that an AFM DW can be used as a controllable element for regulating the magnon heat current in magnonic devices through the application of a magnetic field.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"90 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143832098","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
Impact of photo-irradiation on the optical and spin properties of chiral CdS quantum dot films 光辐照对手性CdS量子点薄膜光学和自旋特性的影响
IF 4 2区 物理与天体物理
Applied Physics Letters Pub Date : 2025-04-14 DOI: 10.1063/5.0268396
Pan Liang, Yang Wang, Lin Cheng, Rongrong Hu, Yumeng Men, Jinlei Li, Tianqing Jia, Zhenrong Sun, Donghai Feng
{"title":"Impact of photo-irradiation on the optical and spin properties of chiral CdS quantum dot films","authors":"Pan Liang, Yang Wang, Lin Cheng, Rongrong Hu, Yumeng Men, Jinlei Li, Tianqing Jia, Zhenrong Sun, Donghai Feng","doi":"10.1063/5.0268396","DOIUrl":"https://doi.org/10.1063/5.0268396","url":null,"abstract":"Chiral quantum dots (QDs) are expected to play a significant role in chiral molecular recognition, spin-selective filtering for charge transport, and various other fields. Photo-irradiation can enhance the photoluminescence (PL) of chiral CdSe QD films, which serves as a convenient method to modulate the optical properties. However, the effects of photo-irradiation on the absorption and spin properties of chiral QDs remain unclear. In this study, we investigate the influence of photo-irradiation on the PL, absorption, and spin properties of chiral L/D-cysteine-capped CdS QD films. Under the irradiation of the 458 nm continuous wave laser, the PL intensity of chiral CdS QD films can be significantly enhanced by over 50 times and the absorption peak exhibits a blue shift of approximately 3 nm. The transient transmission dynamics before and after irradiation indicate that the bleach recovery lifetime became longer after irradiation, which can be attributed to the increase in radiative recombination. Furthermore, the strength of the electron spin is diminished due to a decrease in the number of charge-separated electrons. The significant enhancement in PL intensity, coupled with the increased radiative recombination and the reduction in spin signals, strongly suggests that surface defects are effectively passivated. The influence of photo-irradiation on the optical properties of chiral QDs provides valuable insights for the design of chiral nanomaterials and their applications.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"21 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143832091","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
Kerr electro-optic properties of rare-earth doped Pb(Mg1/3Nb2/3)O3-PbTiO3 crystals 稀土掺杂Pb(Mg1/3Nb2/3)O3-PbTiO3晶体的Kerr电光性质
IF 4 2区 物理与天体物理
Applied Physics Letters Pub Date : 2025-04-14 DOI: 10.1063/5.0258040
Hongjiang Wu, Ruibin Xiong, Rongbing Su, Zujian Wang, Bin Su, Lingfei Lv, Chao He
{"title":"Kerr electro-optic properties of rare-earth doped Pb(Mg1/3Nb2/3)O3-PbTiO3 crystals","authors":"Hongjiang Wu, Ruibin Xiong, Rongbing Su, Zujian Wang, Bin Su, Lingfei Lv, Chao He","doi":"10.1063/5.0258040","DOIUrl":"https://doi.org/10.1063/5.0258040","url":null,"abstract":"Pb(Mg1∕3Nb2∕3)O3-PbTiO3 (PMN-PT) crystals exhibit significant potential for applications in the electro-optical (EO) field, owing to their low half-wave voltage and high electro-optic coefficients, ease of miniaturization, and integration. However, the ferroelectric phase PMN-PT crystals exhibit a low extinction ratio due to light scattering and reflection by domain walls. In this study, high-transmittance paraelectric phase PMN-PT crystals were synthesized through compositional optimization and rare-earth ion doping. The optical and Kerr electro-optic properties of the crystals were systematically analyzed, considering the PT composition and doping with La3+ and Sm3+ ions. The La-PMN-8PT crystals demonstrated a transmission rate of 75%, a quadratic electro-optic coefficient of 4.28 × 10−16 m2/V2, an extinction ratio of 29 dB, and a half-wave voltage of 270 V. Additionally, the electro-optical performance of the crystals was evaluated over a range of temperatures, revealing excellent temperature stability in the La-doped crystals. These results highlight the promising potential of La-doped PMN-PT crystals for advanced electro-optical applications.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"39 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143827599","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
Excellent magnetostrictive properties via tuning the crystal structure and grain size 通过调整晶体结构和晶粒尺寸，具有优异的磁致伸缩性能
IF 4 2区 物理与天体物理
Applied Physics Letters Pub Date : 2025-04-14 DOI: 10.1063/5.0257974
Qizhong Zhao, Kun Wang, Jiale Guo, Fanghua Tian, Xiaojing Zhang, Kaiyan Cao, Yin Zhang, Chao Zhou, Sen Yang, Xiaoping Song
{"title":"Excellent magnetostrictive properties via tuning the crystal structure and grain size","authors":"Qizhong Zhao, Kun Wang, Jiale Guo, Fanghua Tian, Xiaojing Zhang, Kaiyan Cao, Yin Zhang, Chao Zhou, Sen Yang, Xiaoping Song","doi":"10.1063/5.0257974","DOIUrl":"https://doi.org/10.1063/5.0257974","url":null,"abstract":"Magnetostrictive materials are of significant interest due to their potential applications in sensors, actuators, and energy converters. For magnetostrictive materials, different preparation processes are crucial to the quality of their magnetostrictive effect. In this work, Ni50Mn27Ga23 alloys in as-cast, directionally solidified, and melt-spun states were synthesized, and their structural, magnetic, and magnetostrictive properties were investigated. The results reveal that grain size and growth orientation are strongly influenced by the preparation method. Smaller grain sizes and increased grain boundaries hinder domain reorientation under external fields, leading to reduced magnetostriction and higher saturation fields. Growth orientation also affects saturation, further impacting both magnetic and magnetostrictive properties. This work provides valuable insights into the structure–magnetostriction relationship, offering guidance for developing excellent magnetostrictive materials.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"137 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143827598","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
Theoretical characterization of NV-like defects in 4H-SiC using ADAQ with SCAN and r2SCAN meta-GGA functionals 利用ADAQ与SCAN和r2SCAN元- gga泛函对4H-SiC中nv样缺陷进行理论表征
IF 4 2区 物理与天体物理
Applied Physics Letters Pub Date : 2025-04-14 DOI: 10.1063/5.0252129
Ghulam Abbas, Oscar Bulancea-Lindvall, Joel Davidsson, Rickard Armiento, Igor A. Abrikosov
{"title":"Theoretical characterization of NV-like defects in 4H-SiC using ADAQ with SCAN and r2SCAN meta-GGA functionals","authors":"Ghulam Abbas, Oscar Bulancea-Lindvall, Joel Davidsson, Rickard Armiento, Igor A. Abrikosov","doi":"10.1063/5.0252129","DOIUrl":"https://doi.org/10.1063/5.0252129","url":null,"abstract":"Kohn–Sham density functional theory is widely used for screening color centers in semiconductors. While the Perdew–Burke–Ernzerhof (PBE) generalized gradient approximation functional is efficient, its accuracy in describing defects is often not sufficient. The Heyd–Scuseria–Ernzerhof (HSE) functional is more accurate but computationally expensive, making it impractical for large-scale screening. This study evaluates the strongly constrained and appropriately normed (SCAN) family of meta-GGA functionals as potential alternatives to PBE for characterizing NV-like color centers in 4H-SiC using the Automatic Defect Analysis and Qualification (ADAQ) framework. We examine nitrogen, oxygen, fluorine, sulfur, and chlorine vacancies in 4H-SiC, focusing on applications in quantum technology. Our results show that SCAN and r2SCAN achieve a greater accuracy than PBE, approaching HSE's precision at a lower computational cost. This suggests that the SCAN family offers a practical improvement for screening new color centers, with computational demands similar to PBE.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"40 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143831905","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 strain-modulated topological insulator and semimetal states in monolayer 1T′-MoTe2 1T ' -MoTe2单层中应变调制拓扑绝缘体和半金属态的观察
IF 4 2区 物理与天体物理
Applied Physics Letters Pub Date : 2025-04-14 DOI: 10.1063/5.0256544
H. P. Zhao, D. L. Zhang, S. G. Yang, M. X. Chen, A. L. Pan, X. Wang
{"title":"Observation of strain-modulated topological insulator and semimetal states in monolayer 1T′-MoTe2","authors":"H. P. Zhao, D. L. Zhang, S. G. Yang, M. X. Chen, A. L. Pan, X. Wang","doi":"10.1063/5.0256544","DOIUrl":"https://doi.org/10.1063/5.0256544","url":null,"abstract":"Two-dimensional topological insulators have attracted considerable attention due to their topological edge states (ESs), which originate from the nontrivial topology of the insulating bulk states. Monolayer 1T′-MoTe2 has been theoretically predicted to have topological ESs. However, the experimental verification of its topological characteristics (i.e., bandgap opening) with spatial information remains elusive due to its thermodynamic instability and semi-metallic characteristics. Here, we utilize molecular beam epitaxy to synthesize a series of high-quality monolayer 1T′-MoTe2 with different lattice deformations (strains) on graphitized SiC (Gr/SiC) and Au (111) substrates. Using scanning tunneling microscopy, we observe the topological insulator and semimetal states in monolayer 1T′-MoTe2. Furthermore, by combining experimental observation and density functional theory calculations, we confirm that the tensile strain along the Y-axis (lattice constant b) is a crucial factor in modulating the bandgap opening of the monolayer 1T′-MoTe2. This work not only deepens our understanding of the topological properties of monolayer 1T′-MoTe2 but also provides the potentiality for optimizing its topological characteristics through the regulation of local strain.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"37 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143831903","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
Crystallization regulation and defect suppression of CsPbI2Br perovskite using a dual-functional additive 双功能添加剂对CsPbI2Br钙钛矿结晶调控及缺陷抑制
IF 4 2区 物理与天体物理
Applied Physics Letters Pub Date : 2025-04-14 DOI: 10.1063/5.0260577
Zhi Zhu, Jing Xu, Yuhan Zhou, Shisheng Ge, Tao Yu, Jie Yang, Chunxiong Bao, Zhigang Zou
{"title":"Crystallization regulation and defect suppression of CsPbI2Br perovskite using a dual-functional additive","authors":"Zhi Zhu, Jing Xu, Yuhan Zhou, Shisheng Ge, Tao Yu, Jie Yang, Chunxiong Bao, Zhigang Zou","doi":"10.1063/5.0260577","DOIUrl":"https://doi.org/10.1063/5.0260577","url":null,"abstract":"Inorganic CsPbI2Br perovskite solar cells have attracted widespread attention due to their outstanding performance and photo-thermal stability. However, the rapid crystallization of the solution-processed CsPbI2Br film often results in poor crystallinity and a high density of defects, which seriously restrict the improvement of the device performance. Here, we introduce a dual-functional additive, 4-amino-5-aminomethyl-2-methylpyrimidine (AMP), to regulate the crystallization and reduce the defect density of the CsPbI2Br film. The introduction of AMP notably improves the crystallinity and morphology of the CsPbI2Br film and promotes a preferred crystal orientation. The C=N and amino groups in AMP interact with Pb2+ and Br- in the perovskite, respectively, effectively passivating the defects and improving the carrier lifetime. As a result, the power conversion efficiency of the optimized carbon-based hole-transport layer-free device reaches 13.30%, which exceeds the 10.66% of the control device. The environmental and light stability of the device is also significantly improved. This work provides valuable insights into the development of high-performance all-inorganic perovskite solar cells via additive strategies.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"6 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143827437","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
Enhanced polarization locking in VCSELs VCSELs中增强的极化锁定
IF 4 2区 物理与天体物理
Applied Physics Letters Pub Date : 2025-04-14 DOI: 10.1063/5.0259836
Zifeng Yuan, Dewen Zhang, Lei Shi, Yutong Liu, Aaron Danner
{"title":"Enhanced polarization locking in VCSELs","authors":"Zifeng Yuan, Dewen Zhang, Lei Shi, Yutong Liu, Aaron Danner","doi":"10.1063/5.0259836","DOIUrl":"https://doi.org/10.1063/5.0259836","url":null,"abstract":"While optical injection locking (OIL) of vertical-cavity surface-emitting lasers (VCSELs) has been widely studied in the past, the polarization dynamics of OIL have received far less attention. Recent studies suggest that polarization locking via OIL could enable novel computational applications such as polarization-encoded Ising computers. However, the inherent polarization preference and limited polarization switchability of VCSELs hinder their use for such purposes. To address these challenges, we fabricate VCSELs with tailored oxide aperture designs and combine these with bias current tuning to study the overall impact on polarization locking. Experimental results demonstrate that this approach reduces the required injection power (to as low as 3.6 μW) and expands the locking range. To investigate the impact of the approach, the spin-flip model is used to analyze the effects of amplitude anisotropy and bias current on polarization locking, demonstrating strong coherence with experimental results.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"21 7 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143827439","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
Quasi-in situ redeposition-enabled stabilization of NiFe-based (oxy)hydroxides under high OER current density 高OER电流密度下nife基（氧）氢氧化物的准原位再定位稳定
IF 4 2区 物理与天体物理
Applied Physics Letters Pub Date : 2025-04-14 DOI: 10.1063/5.0261319
Meng-Yuan Xie, Jia-Rong Huang, Hui Wan, Jianhang Nie, Ming-Hua Xian, Zhen-Yang Ou-Yang, Gui-Fang Huang, Wei-Qing Huang
{"title":"Quasi-in situ redeposition-enabled stabilization of NiFe-based (oxy)hydroxides under high OER current density","authors":"Meng-Yuan Xie, Jia-Rong Huang, Hui Wan, Jianhang Nie, Ming-Hua Xian, Zhen-Yang Ou-Yang, Gui-Fang Huang, Wei-Qing Huang","doi":"10.1063/5.0261319","DOIUrl":"https://doi.org/10.1063/5.0261319","url":null,"abstract":"NiFe-based (oxy)hydroxides are promising oxygen evolution reaction (OER) catalysts but suffer from severe Fe dissolution under operational conditions, rapidly resulting in a significant drop in activity. Here, we report a quasi-in situ redeposition strategy enabled by Ce doping to realize rapid capture and deposition of Fe species on the surface of NiFeOOH. During the OER process, dissolved Ce ions, owing to their large ionic radius and strong electrostatic attraction, enhance OH− concentration at the solid–liquid interface, accelerating Fe redeposition and suppressing Fe leaching into the electrolyte. This significantly enhances activity and durability under high-current density. The optimized Ce-NiFeOOH catalyst delivers an overpotential of 294 mV at 1000 mA cm−2 and maintains excellent stability at 500 mA cm−2. This strategy offers a feasible direction to design highly stable transition-metal-based (oxy)hydroxides for the OER.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"108 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143827596","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
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