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Control of vortex chirality in regular polygonal nanomagnets using in-plane magnetic field
The authors have proposed a control method of the magnetic vortex chirality in regular polygonal nanomagnets with an odd number of sides. The asymmetric nucleation energy of the vortex from the uniformly magnetized state enables us to simply control the vortex chirality by an in-plane magnetic field. The reliability of the proposed method has been numerically and experimentally confirmed in the triangle, pentagonal, heptagonal, and nonagonal Permalloy nanomagnets. The authors also confirmed that the vortex chirality is uncontrollable when the number of the side is even. © 2010 American Institute of Physics.. |
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Yoshichika Otani, Takashi Kimura, Manipulation of spin currents in metallic systems, PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 10.1098/rsta.2011.0010, Vol.369, No.1948, pp.3136-3149, 2011.08, The transport properties of diffusive spin currents have been investigated in lateral ferromagnetic/non-magnetic metal hybrid structures. The spin diffusion processes were found to be strongly dependent on the magnitude of the spin resistances of connected materials. Efficient spin injection and detection are accomplished by optimizing the junction structures on the basis of the spin resistance circuitry. The magnetization switching of a nanoscale ferromagnetic particle and also room temperature spin Hall effect measurements were realized by using an efficient pure-spin-current injection.. |
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Spin Current
© Oxford University Press 2017. All rights reserved. Advance Care Planning (ACP) is an essential part of quality end of life care in the UK and in most developed countries, enabling more people to live well and die well as they would choose. In the context of the ageing population, with increasing possibilities for medical interventions, ACP is an crucial consideration, with important implications for the individual person and their family and for our wider population. This book takes a comprehensive look at the subject, helps readers explore a wide range of issues and practicalities in providing ACP; frames the purpose, process, and outcomes; provides updates on national and international research, policy, and practice and includes contributions from experts from around the world. Death will affect us all; it is the one certainty in life. Yet the subject of death remains something of a taboo, we rarely discuss what our preferences would be at end of life, what we would want, where we would want to be cared for, not even with loved ones.. |
