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doctoral thesis
Novel phases in quasi-one-dimensional frustrated spin chain LiCuSbO4
Zagreb: University of Zagreb, Faculty of Science, 2022. urn:nbn:hr:217:231132
Bosiočić, Marko
University of Zagreb
Faculty of Science
Department of Physics

Institutional repository: Repository of the Faculty of Science

Cite this document

Bosiočić, M. (2022). Novel phases in quasi-one-dimensional frustrated spin chain LiCuSbO4 (Doctoral thesis). Zagreb: University of Zagreb, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:217:231132

Bosiočić, Marko. "Novel phases in quasi-one-dimensional frustrated spin chain LiCuSbO4." Doctoral thesis, University of Zagreb, Faculty of Science, 2022. https://urn.nsk.hr/urn:nbn:hr:217:231132

Bosiočić, Marko. "Novel phases in quasi-one-dimensional frustrated spin chain LiCuSbO4." Doctoral thesis, University of Zagreb, Faculty of Science, 2022. https://urn.nsk.hr/urn:nbn:hr:217:231132

Bosiočić, M. (2022). 'Novel phases in quasi-one-dimensional frustrated spin chain LiCuSbO4', Doctoral thesis, University of Zagreb, Faculty of Science, accessed 25 August 2024, https://urn.nsk.hr/urn:nbn:hr:217:231132

Bosiočić M. Novel phases in quasi-one-dimensional frustrated spin chain LiCuSbO4 [Doctoral thesis]. Zagreb: University of Zagreb, Faculty of Science; 2022 [cited 2024 August 25] Available at: https://urn.nsk.hr/urn:nbn:hr:217:231132

M. Bosiočić, "Novel phases in quasi-one-dimensional frustrated spin chain LiCuSbO4", Doctoral thesis, University of Zagreb, Faculty of Science, Zagreb, 2022. Available at: https://urn.nsk.hr/urn:nbn:hr:217:231132

Metadata
TitleNovel phases in quasi-one-dimensional frustrated spin chain LiCuSbO4
Title (croatian)Nove faze u kvazijednodimenzionalnom frustriranom spinskom lancu LiCuSbO4
AuthorMarko Bosiočić
MentorMiroslav Požek (mentor)
MentorFabrice Bert https://orcid.org/0000-0003-3627-5228 (komentor)
Committee memberMihael Srđan Grbić (predsjednik povjerenstva)
Committee memberMirta Herak (član povjerenstva)
Committee memberMiroslav Požek (član povjerenstva)
Committee memberFabrice Bert https://orcid.org/0000-0003-3627-5228 (član povjerenstva)
Committee memberDanko Radić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Science
(Department of Physics)
Zagreb
Defense date and country2022-10-07, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Universal decimal classification
(UDC)		53 - Physics
Abstract
Search for novel (quantum) states of matter is one of the prime goals of contemporary physics. Spin nematic phase, where spins form a state with vanishing dipolar moment while a more complex operator remains with non zero expectation value, was predicted in one dimensional (1D) spin systems with ferromagnetic (FM) interaction between first and antiferromagnetic (AFM) interaction between second neighbours in the region near saturation field. After decades of mainly theoretical work in low dimensional spin systems, the first material candidates started to emerge, albeit no clear experimental evidence for such a phase was presented so far. In this thesis, extensive experimental research on LiCuSbO_4 compound, a spin nematic candidate, is presented. This material shows distinct properties: absence of 3D ordering in zero magnetic field down to 30 mK, saturation field of ≈13 T. Nuclear magnetic resonance (NMR), muon spin rotation (μSR) and magnetic susceptibility (SQUID) techniques were used to unravel and tackle different parts of the experimental phase diagram. We conclude that the search for possible quadrupolar nematic (QN) phase is narrowed down to a field range 12.5-13 T, and remains a goal for future investigations. Results in this thesis are compared to the recent work by Grafe et al. [1]. Also, we summarize most important work on similar compound LiCuVO_4, which is investigated for 15 years and available in form of single crystals.
Abstract (croatian)
Potraga za novim(kvantnim) stanjima materije je jedan od važnijih ciljeva moderne fizike. Spinska nematska stanja, gdje spinovi formiraju stanja s iščezavajućim dipolnim momentom, dok kompleksniji operatori imaju ne iščezavajuće vrijednosti, predviđeni su u jednodimenzionalnim (1D) spinskim sustavima s feromagnetskom interakcijom među prvim i antiferomagnetskom interakcijom među drugim susjedima u području blizu saturacijskog polja. Nakon desetljeća, uglavnom teorijskih, radova u niskodimenzionalnim spinskim sustavima, prvi spojevi kandidati počeli su se pojavljivati, iako do sada nema jasnih eksperimentalnih dokaza za postojanje takvih faza. U ovom radu prezentirano je iscrpno eksperimentalno istraživanje spoja LiCuSbO_4, kandidata za opažanje spinske nematske faze. Ovaj spoj pokazuje sljedeća svojstva: nepostojanje3D uređenja u nultom magnetskom polju na temperaturama iznad 30 mK i saturacijsko polje od ≈13 T. U ovom su radu korištene tehnike nuklearne magnetske rezonancije (NMR), mionske spinske rotacije (μSR) i magnetske susceptibilnosti (SQUID) kako bi se istražili različiti dijelovi faznog dijagrama. Zaključujemo da je potraga za mogućom kvadrupolnom nematskom (QN) fazom sužena na područje izmedu 12.5 i 13 T i ostaje ciljem za buduća istraživanja. Rezultati predstavljeni u ovom radu uspoređeni su s nedavnim radom Grafea i suradnika [1]. Također, saželi smo najvažnije radove na sličnom spoju LiCuVO_4, koji je predmet istraživanja više od 15 godina i dostupan je kao monokristal.
Keywords
Keywords (croatian)
Languageenglish
URN:NBNurn:nbn:hr:217:231132
Promotion2022
Study programmeTitle: Physics
Study programme type: university
Study level: postgraduate
Academic / professional title: doktor/doktorica znanosti, područje prirodnih znanosti, polje fizika (doktor/doktorica znanosti, područje prirodnih znanosti, polje fizika)
Type of resourceText
Extent92 str.
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2022-10-11 15:33:29