UM  > INSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Affiliated with RCfalse
Status已發表Published
TitleCrystal Growth and Characterization of Kagome Magnets: From Frustration to Quantum Spin Liquid candidate
CreatorFu, Y.; Li, H.
Subtype博士Phd
Thesis AdvisorHai-Feng LI
Date Issued2021-11-10
Degree GrantorUniversity of Macau
Place of ConferralUniversity of Macau
KeywordCrystal Growth Characterization Kagome Magnets
Abstract

The quantum kagome magnets have been intensively investigated for study the exotic states, including quantum spin liquid (QSL), superconductivity, topological phases. Our research has focused on different kagome magnets and scoped in inplane ferromagnetism, ‘q=0’ type antiferromagnetism and absence of magnetic order. In α-Cu3Mg(OH)6Br2, we have observed Bose–Einstein condensation of magnons with field along c axis, and found that the out-of-plane Dzyaloshinskii Moriya (DM) interaction plays a center role in controlling the U(1) symmetry. YCu3(OH)6Cl3 performs ‘q=0’ type antiferromagnetic order, with substituting Y by lanthanides Ln3+ (Ln = Nd-Dy), the Ln3+ has dominated the low temperature magnetic behaviors but shows little impact on the magnetic order of kagome lattice of Cu2+. For Y3Cu9(OH)19Cl8 and related analogous compounds, we have observed two magnetic order: one is in near 2 K and another magnetic order is around 25-30 K. For Znbarlowite, when Zn content x is larger than 0.6, the ferromagnetic order can be totally suppressed and Zn0.8Cu3.2(OH)6FBr is a new QSL candidate. In the comparative Raman experiments, we observed deconfinement and confinement in the QSL candidate Zn0.8Cu3.2(OH)6FBr and antiferromagnetic-order compounds EuCu3(OH)6Cl3, respectively. For Zn0.8Cu3.2(OH)6FBr, we have obtained lowtemperature profile of Raman spectra for one-pair spinons.

Language英語English
PUB ID61945
Fulltext Access
Document TypeThesis
CollectionINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding AuthorLi, H.
Recommended Citation
GB/T 7714
Fu, Y.,Li, H.. Crystal Growth and Characterization of Kagome Magnets: From Frustration to Quantum Spin Liquid candidate[D]. University of Macau. University of Macau,2021.
Files in This Item: Download All
File Name/Size Publications Version Access License
PhD thesis_fuying_20(13359KB)Thesis 开放获取ODC BYView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Fu, Y.]'s Articles
[Li, H.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Fu, Y.]'s Articles
[Li, H.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Fu, Y.]'s Articles
[Li, H.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: PhD thesis_fuying_2021.12.06.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

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