Cited 0 time in webofscience Cited 0 time in scopus

Observation of multi-states anomalous Hall resistance due to domain wall motion in a single Hall bar for the neuromorphic applications

Title
Observation of multi-states anomalous Hall resistance due to domain wall motion in a single Hall bar for the neuromorphic applications
Authors
Yoonui Kim
DGIST Authors
Kim, Yoonui; Hong, Jung-IlYou, Chun Yeol
Advisor(s)
유천열
Co-Advisor(s)
Jung-Il Hong
Issue Date
2019
Available Date
2019-08-23
Degree Date
2019-08
Type
Thesis
Description
시냅스 모방소자, 멤리스티브 특성, 자구벽 운동, 이상 홀 효과
Table Of Contents
Ⅰ. INTRODUCTION 1 Ⅱ. THEORTICAL BACKGROUND 2.1 DW types in perpendicular magnetic anisotropy 3 2.2 Landau-Lifshitz and Gilbert equation (LLG equation) 8 2.3 Field-induced pinning / depinning of DW 10 2.4 Anomalous Hall Effect 13 2.5 Polar Magneto-Optic Kerr microscopy 15 Ⅲ. DEVICE FABRICATION TECHNIQUE 3.1 DC magnetron sputtering 20 3.2 Photolithography 24 3.3 Ion beam milling system 26 3.4 E-beam evaporator 28 Ⅳ. RESULTS & DISCSSUION 4.1 Film characterization 30 4.2 Memristive functionality originated from DW movement 35 4.3 Spintronics synapses for artificial neural network 38 4.4 Correlation between the change of R_H and DW pinning process 42 4.5 The number of multi-states in R_H as a function of field intensity 45 4.6 The variation of R_H for the different τ_d of field 47 4.7 R_H in various shape according to the number of field pulses 49 4.8 STDP learning rules related with pulse conditions 53 4.9 Various shape of R_H by modulating the polarities 56 4.10 Potentiation and depression of R_H with DW motion 59 Ⅴ. CONCLUSION 62 Ⅵ. REFERENCE 63
URI
http://dgist.dcollection.net/common/orgView/200000217289
http://hdl.handle.net/20.500.11750/10461
DOI
10.22677/thesis.200000217289
Degree
Master
Department
Department of Emerging Materials Science
University
DGIST
Related Researcher
  • Author Hong, Jung-Il Spin Nanotech Laboratory
  • Research Interests Electric and Magnetic Properties of Nanostructured Materials; Spintronics
Files:
There are no files associated with this item.
Collection:
Department of Emerging Materials ScienceThesesMaster


qrcode mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE