Fluctuation-induced interactions and the spin-glass transition inFe2TiO5
| Autor: | Theo Siegrist, Sergey Syzranov, Arthur P. Ramirez, D. Phelan, Tiglet Besara, Yan Xin, P. G. LaBarre, S. Rosenkranz, Feng Ye |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Spin glass Strongly Correlated Electrons (cond-mat.str-el) Condensed matter physics Spins Transition temperature FOS: Physical sciences Disordered Systems and Neural Networks (cond-mat.dis-nn) 02 engineering and technology Condensed Matter - Disordered Systems and Neural Networks Neutron scattering 021001 nanoscience & nanotechnology 01 natural sciences Condensed Matter - Strongly Correlated Electrons Magnetization symbols.namesake 0103 physical sciences symbols Antiferromagnetism Condensed Matter::Strongly Correlated Electrons van der Waals force 010306 general physics 0210 nano-technology Glass transition |
| Zdroj: | Physical Review B. 103 |
| ISSN: | 2469-9969 2469-9950 |
| Popis: | We investigate the spin-glass transition in the strongly frustrated well-known compound $Fe_2TiO_5$. A remarkable feature of this transition, widely discussed in the literature, is its anisotropic properties: the transition manifests itself in the magnetic susceptibly only along one axis, despite $Fe^{3+}$ $d^5$ spins having no orbital component. We demonstrate, using neutron scattering, that below the transition temperature $T_g = 55 K$, $Fe_2TiO_5$ develops nanoscale surfboard shaped antiferromagnetic regions in which the $Fe^{3+}$ spins are aligned perpendicular to the axis which exhibits freezing. We show that the glass transition may result from the freezing of transverse fluctuations of the magnetization of these regions and we develop a mean-field replica theory of such a transition, revealing a type of magnetic van der Waals effect. 14 pages, 4 figures, 6 page supplemental material, 2 figures |
| Databáze: | OpenAIRE |
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