scholarly journals An alternative formulation of Hall effect and quantum phases in noncommutative space

2010 ◽  
Vol 374 (37) ◽  
pp. 3810-3817 ◽  
Author(s):  
Ömer F. Dayı ◽  
Barış Yapışkan
Keyword(s):  
Hall Effect ◽  
Noncommutative Space ◽  
Alternative Formulation ◽  
Quantum Phases

scholarly journals Critical thickness for the emergence of Weyl features in Co3Sn2S2 thin films

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Junya Ikeda ◽  
Kohei Fujiwara ◽  
Junichi Shiogai ◽  
Takeshi Seki ◽  
Kentaro Nomura ◽  
...  
Keyword(s):  
Hall Effect ◽  
Water Oxidation ◽  
Critical Thickness ◽  
Anomalous Hall Effect ◽  
Spin Orbit Coupling ◽  
Quantum Phases ◽  
Weyl Semimetal ◽  
Unit Cells ◽  
Ferromagnetic Ordering ◽  
Surface Conduction

AbstractMagnetic Weyl semimetals are quantum phases of matter arising from the interplay of linearly dispersive bands, spin-orbit coupling, and time reversal symmetry breaking. This can be realised, for example, in Co3Sn2S2, based on a cobalt kagome lattice and characterised by intriguing phenomena such as large anomalous Hall effect, Nernst effect, and water oxidation. Here, we attempt to determine the robustness of the twofold necessary conditions for the emergence of the magnetic Weyl semimetal phase in Co3Sn2S2 ultrathin films. Except for two-dimensional layered materials, a reduction of thickness generally makes it difficult to develop topological character and ferromagnetic long-range order. In Co3Sn2S2 films, while ferromagnetic ordering appears robustly even in average thicknesses of one or two unit cells with island-like polycrystalline domains, the anomalous Hall conductivity appears only above a critical thickness of approximately 10 nm. The emergence of surface conduction and large anomalous Hall effect implies the distinct contribution of Weyl nodes and their Berry curvature. These findings reveal an exotic feature of Weyl physics in thin-film based superstructures as well as a potential for future applications in electronic devices.

HALL EFFECT IN SILVER - RARE EARTH AMORPHOUS ALLOYS

1980 ◽  
Vol 41 (C8) ◽  
pp. C8-467-C8-469 ◽  
Author(s):  
R. Asomoza ◽  
J. B. Bieri ◽  
A. Fert ◽  
B. Boucher ◽  
J. C. Ousset
Keyword(s):  
Rare Earth ◽  
Hall Effect ◽  
Amorphous Alloys

Strategi Penyelenggaraan Diklat Dan Ujian Sertifikasi Keahlian Pengadaan Barang/ Jasa Pemerintah Di Lingkungan Pemerintah Kabupaten Magelang

2017 ◽  
Vol 24 (1) ◽  
pp. 87-106
Author(s):  
Wiharyanto Wiharyanto
Keyword(s):  
Education And Training ◽  
Test System ◽  
Civil Servants ◽  
Quality Of Education ◽  
Alternative Formulation ◽  
Computer Assisted ◽  
Certification Exams ◽  
The Government ◽  
And Training

The study aims to analyze about the low graduation and certification exam training participants of the procurement of goods / services of the government and its contributing factors, and formulate a strategy of education and training and skills certification exams procurement of goods / services of the government. Collecting data using the method of study documentation, interviews, and questionnaires. Is the official source of information on the structural and functional Regional Employment Board, as well as the participants of the training and skills certification exams procurement of goods / services of the government in Magelang regency government environment. Analysis using 4 quadrant SWOT analysis, to determine the issue or strategic factors in improving the quality of education and training and skills certification exams procurement of government goods / services within the Government of Magelang regency. The results show organizer position is in quadrant I, which is supporting the growth strategy, with 3 alternative formulation strategies that improve the quality of education and training and skills certification exams procurement of government goods / services, and conducts certification examination of the procurement of government goods / services with computer assisted test system (CAT). Based on the research recommendations formulated advice to the organizing committee, namely: of prospective participants of the training and skills certification exams procurement of goods / services the government should consider the motivation of civil servants, is examinees who have attended training in the same period of the year, the need for simulation procurement of goods / services significantly, an additional allocation of training time, giving sanction to civil servants who have not passed the exam, the provision of adequate classroom space with the number of participants of each class are proportional, as well as explore the evaluation of education and training and skills certification exams procurement of goods / services for Government of participants.

The Hall effect and its analogs

2015 ◽  
Vol 185 (5) ◽  
pp. 479-488 ◽  
Author(s):  
Aleksandr F. Barabanov ◽  
Yurii M. Kagan ◽  
Leonid A. Maksimov ◽  
Andrey V. Mikheyenkov ◽  
Tatyana V. Khabarova
Keyword(s):  
Hall Effect
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