Results 191 to 200 of about 4,381,528 (386)

Ab Initio Study on 3D Anisotropic Ferroelectric Switching Mechanism and Coercive Field in HfO2 and ZrO2

open access: yesAdvanced Functional Materials, EarlyView.
This study uncovers a new switching mechanism in HfO2 and ZrO2, where the absence of a non‐polar layer along the a‐direction induces interaction between polar layers. Consequently, the switching barriers for growth are lower than those for nucleation in this direction, leading to a size‐dependent coercive field that matches experimental observations ...
Kun Hee Ye   +6 more
wiley   +1 more source

Is prostate cancer different in black men? Answers from 3 natural history models

open access: yesCancer, 2017
A. Tsodikov   +7 more
semanticscholar   +1 more source

The natural history of acute heart attacks. Cape general practitioner series.

open access: yesSouth African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde, 1982
One hundred and twenty-nine Cape Town general practitioner participated in an emergency coronary care project in which one of the main aims was to survey the natural history of acute heart attacks in their practices over a 14-month period. Although the 1-month community mortality rate (28% of 445 patients of all ages and 23% of 356 patients under the ...
openaire   +1 more source

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

open access: yesAdvanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai   +8 more
wiley   +1 more source

Single Pair of Weyl Points Evolve From Spin Group‐Protected Nodal Line in Half‐Metallic Ferromagnet V3S4

open access: yesAdvanced Functional Materials, EarlyView.
A spin group (SG)‐based mechanism is proposed to realize a single pair of Weyl points. PT‐symmetric nodal lines (NLs) persist under T‐breaking, protected by the combination of SG and P symmetry. When considering spin‐orbit coupling, the SG‐protected NL will split into Weyl points, which will also induce anomalous transport phenomena arising from ...
Shifeng Qian   +6 more
wiley   +1 more source

Home - About - Disclaimer - Privacy