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Topological metamagnetism : thermodynamics and dynamics of the transition in spin ice under uniaxial compression

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Date
24/05/2022
Author
Pili, L.
Steppke, A.
Barber, M.E.
Jerzembeck, F.
Hicks, C.W.
Guruciaga, P.C.
Prabhakaran, D.
Moessner, R.
Mackenzie, A.P.
Grigera, S.A.
Borzi, R.A.
Keywords
QC Physics
NDAS
MCC
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Abstract
Metamagnetic transitions are analogs of a pressure-driven gas-liquid transition in water. In insulators, they are marked by a superlinear increase in the magnetization that occurs at a field strength set by the spin exchange interactions. Here we study topological metamagnets, in which the magnetization is itself a topological quantity and for which we find a single transition line for two materials with substantially different magnetic interactions: the spin ices Dy2Ti2O7 and Ho2Ti2O7. We study single crystals under magnetic field and stress applied along the [001] direction and show that this transition, of the Kasteleyn type, has a magnetization versus field curve with upward convexity and a distinctive asymmetric peak in the susceptibility. We also show that the dynamical response of Ho2Ti2O7 is sensitive to changes in the Ho3+ environment induced by compression along [001]. Uniaxial compression may open up experimental access to equilibrium properties of spin ice at lower temperatures.
Citation
Pili , L , Steppke , A , Barber , M E , Jerzembeck , F , Hicks , C W , Guruciaga , P C , Prabhakaran , D , Moessner , R , Mackenzie , A P , Grigera , S A & Borzi , R A 2022 , ' Topological metamagnetism : thermodynamics and dynamics of the transition in spin ice under uniaxial compression ' , Physical Review. B, Condensed matter and materials physics , vol. 105 , no. 18 , 184422 . https://doi.org/10.1103/PhysRevB.105.184422
Publication
Physical Review. B, Condensed matter and materials physics
Status
Peer reviewed
DOI
https://doi.org/10.1103/PhysRevB.105.184422
ISSN
1098-0121
Type
Journal article
Rights
Copyright © 2022 American Physical Society. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the final published version of the work, which was originally published at https://doi.org/10.1103/PhysRevB.105.184422.
Description
This work was carried out within the framework of a Max-Planck independent research group on strongly correlated systems. We acknowledge financial support from the Deutsche Forschungsgemeinschaft through SFB 1143 (Project No. 247310070) and Cluster of Excellence ct.qmat (EXC 2147, Project No. 390858490), EPSRC (EP/T028637/1), ShanghaiTech University, Agencia Nacional de Promoción Científica y Tecnológica through PICT 2017-2347, and Consejo Nacional de Investigaciones Científicas y Técnicas through PIP 0446.
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/25582

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