Annalen der Physik最新文献_第9页

Identification and Passivation of D-Center in 4H-SiC: A First-Principles Study 4H-SiC中d中心的识别和钝化：第一性原理研究

IF 2.2 4区物理与天体物理

Annalen der Physik Pub Date : 2024-12-13 DOI: 10.1002/andp.202400317

Shuai-Shuai Liu, Hai-Shan Zhang, Fang-Jing Kang, Ze Peng, Shao-Qiang Guo, Juan Lyu, Jian Gong

{"title":"Identification and Passivation of D-Center in 4H-SiC: A First-Principles Study","authors":"Shuai-Shuai Liu, Hai-Shan Zhang, Fang-Jing Kang, Ze Peng, Shao-Qiang Guo, Juan Lyu, Jian Gong","doi":"10.1002/andp.202400317","DOIUrl":"https://doi.org/10.1002/andp.202400317","url":null,"abstract":"As a deep acceptor defect in 4H-SiC, the D-center related to boron impurities has attracted much attention. However, there are still some disagreements regarding the origin of the D-center, as well as a lack of sufficient understanding of the related optical transitions and carrier capture processes. In this work, based on first-principles calculations, the optoelectronic properties of boron-related point defects in 4H-SiC is systematically investigated, and the passivation of hydrogen on BC defects is also evaluated. The calculated 0/−1 transition levels of substitutional defect BC are very close to the activation energies of the D-center observed in experiments. Furthermore, the photoluminescence (PL) peak positions and non-radiative hole capture cross-section of BC defects calculated are all in good agreement with the experimental values of the D-center. This confirms that the substitutional defects BC are responsible for the D-center in 4H-SiC. These calculation results reveal that the hydrogen atom in 4H-SiC prefers to combine with the BC defects and to passivate the deep acceptor level within the bandgap in 4H-SiC by forming the BC-H complex. This work effectively identifies and passivates the D-center in 4H-SiC, providing valuable insights for improving the performance of various semiconductor materials affected by deep defects.","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143595626","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

Photonic Generation for Frequency 12-Tupling Millimeter-Wave Signal Based on Three Parallel Polarization Modulators 基于三个平行偏振调制器的12倍频毫米波信号的光子产生

IF 2.2 4区物理与天体物理

Annalen der Physik Pub Date : 2024-12-12 DOI: 10.1002/andp.202400345

Xueyao Yan, Dongfei Wang

引用次数: 0

Coherent Conversion Between Single-Frequency and Ultrafast Lasers 单频和超快激光的相干转换

IF 2.2 4区物理与天体物理

Annalen der Physik Pub Date : 2024-12-11 DOI: 10.1002/andp.202400198

Jiaqi Zhou, Yatan Xiong, Zhi Cheng, Xinru Cao, Yan Feng

{"title":"Coherent Conversion Between Single-Frequency and Ultrafast Lasers","authors":"Jiaqi Zhou, Yatan Xiong, Zhi Cheng, Xinru Cao, Yan Feng","doi":"10.1002/andp.202400198","DOIUrl":"https://doi.org/10.1002/andp.202400198","url":null,"abstract":"Lasers with high spectral coherence are in high demand for applications requiring high precision. Single frequency (SF) and ultrafast lasers represent two types of highly coherent light sources, each with distinct time-frequency characteristics. The advent of novel technologies based on electro-optics and nonlinear optics has bridged the gap between these two types of lasers, enabling coherent conversion between them. This review examines several technologies that enable coherent conversion between SF and ultrafast lasers. The generation of ultrafast pulses by modulation of an SF laser, covering both electro-optic modulation (EOM) and optic-optic modulation (OOM) is discussed. With respect to Kerr soliton generation by SF laser-induced parametric frequency conversion, schemes with and without resonator structure are compared and discussed. The extraction of a single comb line from an ultrafast laser using stimulated Brillouin scattering is also presented. The advent of new technologies using all-polarization-maintaining fiber structures has made fiber Brillouin amplification a practical and robust solution for single comb line extraction. These coherent lasers with customizable time and frequency characteristics are poised to become essential building blocks in future photonic technologies.","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 4","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143793751","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

Masthead: Ann. Phys. 12/2024 报头:安。理论物理的12/2024

IF 2.2 4区物理与天体物理

Annalen der Physik Pub Date : 2024-12-09 DOI: 10.1002/andp.202470028

引用次数: 0

(Ann. Phys. 12/2024) (安。phy。12/2024)

IF 2.2 4区物理与天体物理

Annalen der Physik Pub Date : 2024-12-09 DOI: 10.1002/andp.202470027

引用次数: 0

Bound States in the Continuum in Photonics and Metasurfaces: From Phenomena to Applications 光子学和超表面连续体中的束缚态：从现象到应用

IF 2.2 4区物理与天体物理

Annalen der Physik Pub Date : 2024-12-04 DOI: 10.1002/andp.202400250

Wenjie Zhou, Guangcheng Sun, Yueyi Yuan, Yuxiang Wang, Shah Nawaz Burokur, Yue Wang, Kuang Zhang

{"title":"Bound States in the Continuum in Photonics and Metasurfaces: From Phenomena to Applications","authors":"Wenjie Zhou, Guangcheng Sun, Yueyi Yuan, Yuxiang Wang, Shah Nawaz Burokur, Yue Wang, Kuang Zhang","doi":"10.1002/andp.202400250","DOIUrl":"https://doi.org/10.1002/andp.202400250","url":null,"abstract":"Bound states in the continuum (BICs) refer to nonradiative eigenmodes located within the radiation continuum, possessing infinitely high Q-factor and enabling exceptionally strong light–matter interactions. BICs have found applications across various domains in photonics and metasurfaces, including nonlinear optical enhancement, vortex beam generation, sensor technology, microlasers, and other related areas. This work starts by classifying the phenomena of BICs and introducing the theoretical formation mechanisms and topological characteristics. Then, the current and advanced applications based on BIC-devices are highlighted. Lastly, this work discusses the current challenges in studies related to BICs, such as structural precision, material selection, and measurement difficulties, and prospect the possible potentials in future developments. This review provides a theoretical background and application prospects of BIC-engineered devices in optical and photonics fields, laying a solid foundation for future industrial applications.","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143595200","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

Impact of the Hawking Effect on the Fully Entangled Fraction of Three-Qubit States in Schwarzschild Spacetime 霍金效应对史瓦西时空中三量子比特态完全纠缠分数的影响

IF 2.2 4区物理与天体物理

Annalen der Physik Pub Date : 2024-11-30 DOI: 10.1002/andp.202400308

Guang-Wei Mi, Xiaofen Huang, Shao-Ming Fei, Tinggui Zhang

{"title":"Impact of the Hawking Effect on the Fully Entangled Fraction of Three-Qubit States in Schwarzschild Spacetime","authors":"Guang-Wei Mi, Xiaofen Huang, Shao-Ming Fei, Tinggui Zhang","doi":"10.1002/andp.202400308","DOIUrl":"https://doi.org/10.1002/andp.202400308","url":null,"abstract":"Wu et al. [J. High Energ. Phys. 2023, 232 (2023)] first found that the fidelity of quantum teleportation with a bipartite entangled resource state, completely determined by the fully entangled fraction (FEF) characterized by the maximal fidelity between the given quantum state and the set of maximally entangled states, can monotonically increase in Schwarzschild spacetime. The Hawking effect on the FEF of quantum states in tripartite systems is investigated. In this study, it is showed that the Hawking effect of a black hole may both decrease and increase the FEF in Schwarzschild spacetime. For an initial X-type state, it is found that the Hawking effect of the black hole has both positive and negative impacts on the FEF of Dirac fields, depending on the selection of initial states. For an initial W-like state, the Hawking effect of the black hole has only a positive impact on the FEF of Dirac fields, independent of the selection of initial states. These results provide an insightful view of quantum teleportation in multipartite systems under the influence of Hawking effects, from the perspective of quantum information and general relativity.","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 2","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143389443","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

Decoherence Effects on Local Quantum Fisher Information and Quantum Coherence in a Spin- 1 / 2 $1/2$ Ising- X Y Z $XYZ$ Chain 自旋- 1/2$ 1/2$ Ising- XYZ$ XYZ$链中局部量子Fisher信息和量子相干性的退相干效应

IF 2.2 4区物理与天体物理

Annalen der Physik Pub Date : 2024-11-25 DOI: 10.1002/andp.202400200

Hector L. Carrion, Onofre Rojas, Cleverson Filgueiras, Moises Rojas

{"title":"Decoherence Effects on Local Quantum Fisher Information and Quantum Coherence in a Spin-\u0000 \u0000 \u0000 1\u0000 /\u0000 2\u0000 \u0000 $1/2$\u0000 Ising-\u0000 \u0000 \u0000 X\u0000 Y\u0000 Z\u0000 \u0000 $XYZ$\u0000 Chain","authors":"Hector L. Carrion, Onofre Rojas, Cleverson Filgueiras, Moises Rojas","doi":"10.1002/andp.202400200","DOIUrl":"https://doi.org/10.1002/andp.202400200","url":null,"abstract":"This research explores the effects of decoherence on local quantum Fisher information and quantum coherence dynamics in a spin-1/2 Ising-XYZ chain model with independent reservoirs at zero temperature. Contrasting these effects with those in the spin-1/2 Heisenberg XYZ model reveals intricate interactions among quantum coherence, entanglement, and environmental decoherence in spin systems. Analysis of coherence dynamics highlights differences between the original and hybrid models, showcasing increased entanglement due to Ising interactions alongside reduced coherence from environmental redistribution. <math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>L</mi>\u0000 <mi>Q</mi>\u0000 <mi>F</mi>\u0000 <mi>I</mi>\u0000 </mrow>\u0000 <annotation>$LQFI$</annotation>\u0000 </semantics></math> proves more resilient than coherence in specific scenarios, emphasizing decoherence's varying impacts on quantum correlations. This research underscores the complexity of quantum coherence dynamics and the crucial role of environmental factors in shaping quantum correlations, providing insights into entanglement and coherence behavior under environmental influences and guiding future studies in quantum information processing and correlation dynamics.","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143119120","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

Generation of Entanglement and Perfect One-Way EPR Steering via Kerr Nonlinearity in Cavity Magnonics System 腔磁系统中纠缠的产生及基于Kerr非线性的完美单向EPR转向

IF 2.2 4区物理与天体物理

Annalen der Physik Pub Date : 2024-11-25 DOI: 10.1002/andp.202400307

Jia-Xin Wang, Cheng-Hua Bai, Qi Guo

{"title":"Generation of Entanglement and Perfect One-Way EPR Steering via Kerr Nonlinearity in Cavity Magnonics System","authors":"Jia-Xin Wang, Cheng-Hua Bai, Qi Guo","doi":"10.1002/andp.202400307","DOIUrl":"https://doi.org/10.1002/andp.202400307","url":null,"abstract":"A scheme is proposed for generating entanglement and achieving perfect one-way EPR (Einstein–Podolsky–Rosen) steering in a cross-shaped cavity magnonics system via the Kerr effect arising from magnetocrystalline anisotropy. The scheme involves two microwave cavities with distinct quality factors that simultaneously couple to a magnon mode of a macroscopic yttrium-iron-garnet sphere via the magnetic-dipole interaction. It is demonstrated that both the bipartite and tripartite entanglement among the three modes will be generated due to Kerr nonlinearity, and the perfect one-way EPR steering will also be achieved between the cavity with higher quality factor and the magnon mode. Notably, this scheme differs from conventional protocols that produce asymmetric EPR steering by introducing additional unbalanced losses or noises; instead, it can generate and manipulate one-way EPR steering solely by adjusting the detuning between the magnon mode and the microwave drive field. It is also analyzed that the robustness of the entanglement and EPR steering against the dissipation of magnon and environmental temperature. The present scheme may provide a promising platform and an efficient quantum resource for quantum information processing.","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 2","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143389438","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

Surface Phonons and Possible Structural Phase Transition in a Topological Semimetal PbTaSe2 拓扑半金属PbTaSe2的表面声子和可能的结构相变

IF 2.2 4区物理与天体物理

Annalen der Physik Pub Date : 2024-11-25 DOI: 10.1002/andp.202400277

Vivek Kumar, Pradeep Kumar

{"title":"Surface Phonons and Possible Structural Phase Transition in a Topological Semimetal PbTaSe2","authors":"Vivek Kumar, Pradeep Kumar","doi":"10.1002/andp.202400277","DOIUrl":"https://doi.org/10.1002/andp.202400277","url":null,"abstract":"Topological insulators are characterized by protected gapless surface or edge states but insulating bulk states which is due to the presence of spin-orbit interactions and time-reversal symmetry. Here, an in-depth investigation of a topological nodal line semimetal PbTaSe2 via temperature, polarization dependent Raman spectroscopy, and temperature dependent single crystal X-ray diffraction (SC-XRD) measurements is reported. The analysis shows signature of electron-phonon coupling as reflected in the Fano asymmetry in line shape of M1-M4 modes and anomalous temperature variation of line-width of P3-P4 modes. Further polarization dependent phonon symmetry changes at different temperature (6K and 300K), discontinuities in bulk phonon dynamics for P2-P5 modes, and disappearance of phonon modes, i.e., M1-M5, on decreasing temperature indicates toward a thermally induced structural phase transition which is also supported by the SC-XRD results. Hence based on the findings, it is proposed that M1-M4 modes are surface phonon modes, the material undergoes a thermally induced structural phase transition from α to β phase at Tα→β ≈ 150 K or is in close proximity to the β phase and another transition below TCDW+β ≈ 100K which is possibly due to the interplay of remanent completely commensurate charge density wave (CCDW) of 1H-TaSe2 and β phase.","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 2","pages":""},"PeriodicalIF":2.2,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143389439","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