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dc.contributor.advisor 홍정일 -
dc.contributor.author Nguyen Thi Thanh Huong -
dc.date.accessioned 2023-09-18T21:00:54Z -
dc.date.available 2023-09-18T21:00:54Z -
dc.date.issued 2023 -
dc.identifier.uri http://hdl.handle.net/20.500.11750/46416 -
dc.identifier.uri http://dgist.dcollection.net/common/orgView/200000688393 -
dc.description Epitaxial Cr/Fe bilayer; Unidirectional spin Hall magnetoresistance; electron-magnon scattering; magnetic damping -
dc.description.tableofcontents Ⅰ. Introduction 1
Overview of magnonics 1
II. Theoretical perspectives 4
2.1 Magnon 4
2.1.1 Zero spin wave 4
2.1.2 Magnon 8
2.2 Spin Hall effect and Orbital Hall effect 10
2.2.1 Spin Hall effect 11
2.2.2 Orbital Hall effect 13
2.3 Spin dissipation 14
2.3.1 Intrinsic damping 15
2.3.2 Extrinsic damping 17
2.3.3 Spin pumping damping 18
2.3 Magnetoresistance 20
2.3.1 Anisotropic magnetoresistance 20
2.3.2 Unidirectional spin Hall magnetoresistance 21
2.3.3 Spin Hall magnetoresistance 22
2.3.4 Magnon magnetoresistance 24
III. Experimental methods 26
3.1 Molecular beam epitaxy for epitaxial film growth 26
3.2 Unidirectional spin Hall MR: 2nd harmonic voltage measurement 28
3.3 Ferromagnetic resonance measurement 30
3.4 Photolithography & Ion milling 33
IV. Unidirectional spin Hall magnetoresistance in epitaxial Cr/Fe bilayer from electron-magnon scattering. 37
4.1 Introduction 37
4.2 Crystalline structure and magnetic properties 38
4.3 Magnetoresistance results 40
4.4 Discussion 47
4.5 Summary 49
V. Giant magnetic damping anisotropy in epitaxial Cr/Fe bilayer with the absence of magnetocrystalline anisotropy 50
5.1 Introduction 50
5.2 Crystalline structure and magnetic properties 51
5.3 Magnetic damping anisotropy 54
5.4 Discussion 57
5.5 Summary 61
VI. Conclusion and Outlook 62
6.1 Conclusion 62
6.2 Outlook 63
References 64
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dc.format.extent 73 -
dc.language eng -
dc.publisher DGIST -
dc.title Study on spin transport and spin dissipation in epitaxial Cr/Fe bilayer -
dc.title.alternative 에피성장된 Cr/Fe 이중층 구조에서의 스핀 수송 현상 및 스핀 소산 연구 -
dc.type Thesis -
dc.identifier.doi 10.22677/THESIS.200000688393 -
dc.description.degree Doctor -
dc.contributor.department Department of Physics and Chemistry -
dc.contributor.coadvisor Sanghoon Kim -
dc.date.awarded 2023-08-01 -
dc.publisher.location Daegu -
dc.description.database dCollection -
dc.citation XT.MD N576 202308 -
dc.date.accepted 2023-09-14 -
dc.contributor.alternativeDepartment 화학물리학과 -
dc.subject.keyword Epitaxial Cr/Fe bilayer -
dc.subject.keyword Unidirectional spin Hall magnetoresistance -
dc.subject.keyword electron-magnon scattering -
dc.subject.keyword magnetic damping -
dc.contributor.affiliatedAuthor Nguyen Thi Thanh Huong -
dc.contributor.affiliatedAuthor Jung-Il Hong -
dc.contributor.affiliatedAuthor Sanghoon Kim -
dc.contributor.alternativeName Nguyen Thi Thanh Huong -
dc.contributor.alternativeName Jung-Il Hong -
dc.contributor.alternativeName 김상훈 -
dc.rights.embargoReleaseDate 2025-08-31 -
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