짧은 전류 펄스를 이용한 전류 유도 자화 반전에서 에너지 장벽 분포의 효과Effect of Energy Barrier Distribution on Current-Induced Magnetization Switching with Short Current Pulses
- Other Titles
- Effect of Energy Barrier Distribution on Current-Induced Magnetization Switching with Short Current Pulses
- Authors
- 김우영; 이경진
- Issue Date
- 2011
- Publisher
- 한국자기학회
- Keywords
- spin transfer torque; short-pulse switching; 스핀전달토크; 짧은 펄스에 의한 자화 반전
- Citation
- 한국자기학회지, v.21, no.2, pp.48 - 51
- Indexed
- KCI
- Journal Title
- 한국자기학회지
- Volume
- 21
- Number
- 2
- Start Page
- 48
- End Page
- 51
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/113932
- ISSN
- 1598-5385
- Abstract
- We performed macro-spin simulation studies of the current-induced magnetization reversal of nanomagnetic elements with short current pulses. A special attention was paid to the effect of the energy barrier on the switching current distribution. The switching current and its distribution increase with decreasing the current pulse-width. The relationship between the energy barrier and switching current distribution is described by the Arrhenius-Néel law at a long pulse-width regime. At a regime of short pulse-width, however, the relationship is left unaddressed. The difficulty to address this issue arises because the magnetization switching with a short current pulse is governed not by the thermal activation but by the precession motion. Therefore, an exact formulation for the short pulse regime by solving the Fokker-Plank equation is needed to understand the result.
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Collections - College of Engineering > Department of Materials Science and Engineering > 1. Journal Articles
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