arXiv - PHYS - Other Condensed Matter最新文献_第4页

Observation of Klein bottle quadrupole topological insulators in electric circuits 观察电路中的克莱因瓶四极拓扑绝缘体

arXiv - PHYS - Other Condensed Matter Pub Date : 2024-07-10 DOI: arxiv-2407.07470

Xizhou Shen, Keyu Pan, Xiumei Wang, Xingping Zhou

引用次数: 0

An All-encompassing Theory on Charge Transport in Spin Crossover Complexes 自旋交叉复合物电荷传输的全面理论

arXiv - PHYS - Other Condensed Matter Pub Date : 2024-07-10 DOI: arxiv-2407.17517

Archit Dhingra, Mohammad Zaid Zaz, Peter A. Dowben

引用次数: 0

Efficient Electron Spin Relaxation by Chiral Phonons in WSe$_2$ Monolayers 手性声子在 WSe$_2$ 单层中的高效电子自旋弛豫

arXiv - PHYS - Other Condensed Matter Pub Date : 2024-07-09 DOI: arxiv-2407.07188

D. Lagarde, M. Glazov, V. Jindal, K. Mourzidis, Iann Gerber, A. Balocchi, L. Lombez, P. Renucci, T. Taniguchi, K. Watanabe, C. Robert, X. Marie

引用次数: 0

Polarization spontaneous and piezo: fundamentals and their implementation in ab initio calculations 极化自发和压电：基本原理及其在 ab initio 计算中的应用

arXiv - PHYS - Other Condensed Matter Pub Date : 2024-07-01 DOI: arxiv-2407.01134

Pawel Strak, Pawel Kempisty, Konrad Sakowski, Jacek Piechota, Izabella Grzegory, Eva Monroy, Agata Kaminska, Stanislaw Krukowski

{"title":"Polarization spontaneous and piezo: fundamentals and their implementation in ab initio calculations","authors":"Pawel Strak, Pawel Kempisty, Konrad Sakowski, Jacek Piechota, Izabella Grzegory, Eva Monroy, Agata Kaminska, Stanislaw Krukowski","doi":"arxiv-2407.01134","DOIUrl":"https://doi.org/arxiv-2407.01134","url":null,"abstract":"Fundamental properties of spontaneous and piezo polarization are reformulated\u0000and critically reviewed. It was demonstrated that Landau definition of\u0000polarization as a dipole density could be used to the infinite systems. The\u0000difference between the bulk polarization and surface polarity are distinguished\u0000thus creating clear identification of both components. The local model of\u0000spontaneous polarization was created and used to calculate spontaneous\u0000polarization as the electric dipole density. It was shown that the proposed\u0000local model correctly predicts c-axis spontaneous polarization values of the\u0000nitride wurtzite semiconductors. It was also shown that the proposed model\u0000predicts zero polarization in the plane perpendicular to the c-axis, in\u0000accordance with symmetry requirements. In addition, the model results are in\u0000accordance with polarization equal to zero for zinc blende lattice. These data\u0000confirm the basic correctness of the proposed model. The spontaneous\u0000polarization values obtained for all wurtzite III nitrides (BN, AlN, GaN and\u0000InN) are in basic agreement with the earlier calculations using Berry phase and\u0000slab models of Bernardini et al. {Bernardini et al. Phys Rev B 56 (2001) R10024\u0000& 63 (2001) 193201} but not with Dreyer et al. {Dreyer et al. Phys. Rev X 6\u0000(2016) 021038}. Wurtzite nitride superlattices ab initio calculations were\u0000performed to derive polarization-induced fields in the coherently strained\u0000lattices showing good agreement with the polarization values. The strained\u0000superlattice data were used to determine the piezoelectric parameters of\u0000wurtzite nitrides obtaining the values that were in basic agreement with the\u0000earlier data. Zinc blende superlattices were also modeled using ab initio\u0000calculations showing results that are in agreement with the absence of\u0000polarization of all nitrides in zinc blende symmetry.","PeriodicalId":501211,"journal":{"name":"arXiv - PHYS - Other Condensed Matter","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141500866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ultrafast high-temperature sintering of dense and textured alumina 致密和纹理氧化铝的超快高温烧结

arXiv - PHYS - Other Condensed Matter Pub Date : 2024-06-28 DOI: arxiv-2407.00255

Rohit Pratyush Behera, Matthew Jun-Hui Reavley, Zehui Du, Gan Chee Lip, Hortense Le Ferrand

{"title":"Ultrafast high-temperature sintering of dense and textured alumina","authors":"Rohit Pratyush Behera, Matthew Jun-Hui Reavley, Zehui Du, Gan Chee Lip, Hortense Le Ferrand","doi":"arxiv-2407.00255","DOIUrl":"https://doi.org/arxiv-2407.00255","url":null,"abstract":"Crystallographic texture engineering in ceramics is essential to achieve\u0000direction-specific properties. Current texture engineering methods are\u0000time-consuming, energy extensive, or can lead to unnecessary diffusion of added\u0000dopants. Herein, we explore ultrafast high-temperature sintering (UHS) to\u0000prepare dense and textured alumina using templated grain growth (TGG). From a\u0000slurry containing alumina microplatelets coated with Fe3O4 nanoparticles\u0000dispersed in a matrix of alumina nanoparticles, green bodies with oriented\u0000microplatelets were prepared using magnetic assisted slip casting (MASC). The\u0000effects of the sintering temperature, time and heating rate on the density and\u0000microstructure of the obtained ceramics were then studied. We found that TGG\u0000occurs for a temperature range between 1640 and 1780 {deg}C and 10 s sintering\u0000time. Sintering at 1700 {deg}C for 10 s led to dense and textured alumina with\u0000anisotropic grains thanks to the Fe3O4 coating, which did not have the time to\u0000diffuse. The highest texture and relative density were obtained with a heating\u0000rate of ~5,500 {deg}C/min, leading to texture-dependent anisotropic mechanical\u0000properties. This study opens new avenues for fabricating textured ceramics in\u0000ultra-short times.","PeriodicalId":501211,"journal":{"name":"arXiv - PHYS - Other Condensed Matter","volume":"167 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141520110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

THz Control of Exchange Mode in a Ferrimagnetic Cavity 太赫兹控制铁磁腔中的交换模式

arXiv - PHYS - Other Condensed Matter Pub Date : 2024-06-28 DOI: arxiv-2406.19849

Chris Reinhoffer, Ilya Razdolski, Philipp Stein, Semyon Germanskiy, Andrzej Stupakiewicz, Paul H. M. van Loosdrecht, Evgeny A. Mashkovich

引用次数: 0

Subharmonic oscillations in the Floquet circuit with the frequency-synthesis dimension 具有频率合成维度的 Floquet 电路中的次谐波振荡

arXiv - PHYS - Other Condensed Matter Pub Date : 2024-06-26 DOI: arxiv-2406.18769

Bo Lv, Shiyun Xia, Ye Tian, Ting Liu, Hongyang Mu, Zhichao Shen, Sijie Wang, Zheng Zhu, Huibin Tao, Fanyi Meng, Jinhui Shi

{"title":"Subharmonic oscillations in the Floquet circuit with the frequency-synthesis dimension","authors":"Bo Lv, Shiyun Xia, Ye Tian, Ting Liu, Hongyang Mu, Zhichao Shen, Sijie Wang, Zheng Zhu, Huibin Tao, Fanyi Meng, Jinhui Shi","doi":"arxiv-2406.18769","DOIUrl":"https://doi.org/arxiv-2406.18769","url":null,"abstract":"The period-doubling oscillation emerges with the coexistence between zero and\u0000{pi} modes in Floquet topological insulator. Here, utilized the flexibility of\u0000the circuit, we construct the Floquet circuit with frequency-synthetic\u0000dimension and find the topological-protected deeply-subharmonic oscillations\u0000with the period extensively exceeding the doubling-driven period. In the\u0000construction framework, the periodically-driven mechanism is attained by\u0000implementing the circuit-oscillator hierarchy with the stepping-variation\u0000resonances in frequency domain. The zero and {pi} modes that arise at the\u0000Floquet band in the circuit indicate the anomalous boundary-bulk\u0000correspondence. The coexistence of zero and {pi} modes, results in a\u0000subharmonic oscillation with the extremely-low frequency on the edge of the\u0000Floquet circuit. Furthermore, we explore the Floquet band with the enhanced\u0000periodically-driven strength tailored by the component flexibility of the\u0000circuit. Our method provides a flexible scheme to study Floquet topological\u0000phases, and open a new path for realizing the deeply subwavelength system.","PeriodicalId":501211,"journal":{"name":"arXiv - PHYS - Other Condensed Matter","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141500867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Free Electron Theory for Thin Metal Films 金属薄膜的自由电子理论

arXiv - PHYS - Other Condensed Matter Pub Date : 2024-06-23 DOI: arxiv-2406.16197

Philip B. Allen

引用次数: 0

Wave functions in the Critical Phase: a Planar textit{Sierpiński} Fractal Lattice 临界相中的波函数：平面textit{Sierpiński}分形晶格分形晶格

arXiv - PHYS - Other Condensed Matter Pub Date : 2024-06-23 DOI: arxiv-2406.16130

Qi Yao, Xiaotian Yang, Askar A. Iliasov, Mikhail I. Katsnelson, Shengjun Yuan

{"title":"Wave functions in the Critical Phase: a Planar textit{Sierpiński} Fractal Lattice","authors":"Qi Yao, Xiaotian Yang, Askar A. Iliasov, Mikhail I. Katsnelson, Shengjun Yuan","doi":"arxiv-2406.16130","DOIUrl":"https://doi.org/arxiv-2406.16130","url":null,"abstract":"Electronic states play a crucial role in many quantum systems of moire\u0000superlattices, quasicrystals, and fractals. As recently reported in\u0000textit{Sierpi'{n}ski} lattices [Phys. Rev. B 107, 115424 (2023)], the\u0000critical states are revealed by the energy level-correlation spectra, which are\u0000caused by the interplay between aperiodicity and determined self-similarity\u0000characters. In the case of the textit{Sierpi'{n}ski Carpet}, our results\u0000further demonstrate that there is some degree of spatial overlap between these\u0000electronic states. These states could be strongly affected by its `seed\u0000lattice' of the $generator$, and slightly modulated by the dilation pattern and\u0000the geometrical self-similarity level. These electronic states are multifractal\u0000by scaling the $q$-order inverse participation ratio or fractal dimension,\u0000which correlates with the subdiffusion behavior. In the $gene$ pattern, the\u0000averaged state-based multifractal dimension of second-order would increase as\u0000its textit{Hausdoff dimension} increases. Our findings could potentially\u0000contribute to understanding quantum transports and single-particle quantum\u0000dynamics in fractals.","PeriodicalId":501211,"journal":{"name":"arXiv - PHYS - Other Condensed Matter","volume":"73 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141500871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Efficient Band Structure Calculation for Transitional-Metal Dichalcogenides Using the Semiempirical Pseudopotential Method 使用半经验伪势法高效计算过渡金属二钴化物的能带结构

arXiv - PHYS - Other Condensed Matter Pub Date : 2024-06-22 DOI: arxiv-2406.15913

Raj Kumar Paudel, Chung-Yuan Ren, Yia-Chung Chang

引用次数: 0