Results 91 to 100 of about 145,201 (332)

Large Anomalous and Topological Hall Effect and Nernst Effect in a Dirac Kagome Magnet Fe3Ge

Advanced Functional Materials, EarlyView.
Fe3Ge, a Kagome‐lattice magnet, exhibits remarkable anomalous Hall and Nernst effects, with transverse thermoelectric conductivity surpassing or comaprable to some well‐known ferromagnets. First‐principles calculations attribute these to Berry curvature from massive Dirac gaps. Additionally, topological Hall and Nernst signals emerge from field‐induced
Chunqiang Xu, Shuvankar Gupta, Hengxin Tan, Hyeonhu Bae, Olajumoke Oluwatobiloba Emmanuel, Mingyu Xu, Yan Wu, Xiaofeng Xu, Pengpeng Zhang, Weiwei Xie, Binghai Yan, Xianglin Ke   +11 more
wiley   +1 more source

Robustification of fault detection algorithm in a three‐phase induction motor using MCSA for various single and multiple faults

IET Electric Power Applications, 2021
Fault diagnosis in induction machines, particularly at a premature stage, has become necessary to avoid unexpected interruption of the industrial process.
K. C. Deekshit Kompella, Naga Sreenivasu Rongala, Srinivasa Rao Rayapudi, Venu Gopala Rao Mannam   +3 more
doaj   +1 more source

Knot Floer homology and the four-ball genus

, 2003
We use the knot filtration on the Heegaard Floer complex to define an integer invariant tau(K) for knots. Like the classical signature, this invariant gives a homomorphism from the knot concordance group to Z. As such, it gives lower bounds for the slice
Boileau, Donaldson, Gordon, Kauffman, Kawamura, Milnor, Ozsváth, Ozsváth, Peter Ozsváth, Rolfsen, Zoltán Szabó   +10 more
core   +2 more sources

Photoswitching Conduction in Framework Materials

Advanced Functional Materials, EarlyView.
This mini‐review summarizes recent advances in state‐of‐the‐art proton and electron conduction in framework materials that can be remotely and reversibly switched on and off by light. It discusses the various photoswitching conduction mechanisms and the strategies employed to enhance photoswitched conductivity.
Helmy Pacheco Hernandez, Stefan Hecht, Wolfgang Wenzel, Lars Heinke, Mariana Kozlowska   +4 more
wiley   +1 more source

Topological Signature of 19th Century Novelists: Persistent Homology in Text Mining

Big Data and Cognitive Computing, 2018
Topological Data Analysis (TDA) refers to a collection of methods that find the structure of shapes in data. Although recently, TDA methods have been used in many areas of data mining, it has not been widely applied to text mining tasks.
Shafie Gholizadeh, Armin Seyeditabari, Wlodek Zadrozny   +2 more
doaj   +1 more source

Signature for the Shape of the Universe

, 2001
If the universe has a nontrivial shape (topology) the sky may show multiple correlated images of cosmic objects. These correlations can be couched in terms of distance correlations.
A. F. F. TEIXEIRA, Bernui A., Cornish N. J., G. I. GOMERO, Lehoucq R., Lehoucq R., Levin J. J., Levin J. J., M. J. REBOUÇAS, Rebouças M. J., Uzan J.-P.   +10 more
core   +1 more source

Direct Evidence of Topological Dirac Fermions in a Low Carrier Density Correlated 5d Oxide

Advanced Functional Materials, EarlyView.
The 5d oxide BiRe2O6 is discovered as a low‐carrier‐density topological semimetal hosting symmetry‐protected Dirac fermions stabilized by nonsymmorphic symmetries. Angle‐resolved photoemission spectroscopy, quantum oscillations, and magnetotransport measurements reveal gapless Dirac cones, quasi‐2D Fermi surfaces, high carrier mobility, and a field ...
Premakumar Yanda, Jorge Cardenas‐Gamboa, Ding Pei, François Bertran, Leila Noohinejad, Snehashish Chatterjee, Changjiang Yi, Iñigo Robredo, Horst Borrmann, Maia G. Vergniory, Chandra Shekhar, Claudia Felser   +11 more
wiley   +1 more source

Rich unconventional Hall effects in a single quasi-kagome Kondo Weyl semimetal candidate Ce3TiSb5

Communications Materials
It is generally believed that electronic correlation, geometric frustration, and topology, individually, can facilitate the emergence of various intriguing properties that have attracted a broad audience for both fundamental research and potential ...
Xiaobo He, Ying Li, Yongheng Ge, Hai Zeng, Shi-Jie Song, Jie Liu, Shuo Zou, Zhuo Wang, Yuke Li, Wenxin Ding, Jianhui Dai, Guang-Han Cao, Xiao-Xiao Zhang, Tianyou Zhai, Gang Xu, Yongkang Luo   +15 more
doaj   +1 more source

Simple generalizations of Anti-de Sitter space-time

, 2010
We consider new cosmological solutions which generalize the cosmological patch of the Anti-de Sitter (AdS) space-time, allowing for fluids with equations of state such that $w\neq -1$. We use them to derive the associated full manifolds.
Ali Mozaffari, Carroll S B, Gibbons G W, Gibbons G W Warnick C M, João Magueijo, Maldacena J, Townsend P K, Vikman A, Witten E   +8 more
core   +2 more sources

Functional Materials for Environmental Energy Harvesting in Smart Agriculture via Triboelectric Nanogenerators

Advanced Functional Materials, EarlyView.
This review explores functional and responsive materials for triboelectric nanogenerators (TENGs) in sustainable smart agriculture. It examines how particulate contamination and dirt affect charge transfer and efficiency. Environmental challenges and strategies to enhance durability and responsiveness are outlined, including active functional layers ...
Rafael R. A. Silva, Giulio Fatti, Emanuel Carlos, Guilherme Ferreira, Sumita Goswami, Suman Nandy, Luiz H. C. Mattoso, Elvira Fortunato, Caio G. Otoni, Rodrigo Martins   +9 more
wiley   +1 more source