Strong spin-lattice coupling in CrSiTe3

Casto, Laura D.; Clune, Amanda; Yokosuk, Michael O.; Musfeldt, J. L.; Williams, Travis; Zhuang, Houlong; Lin, Ming‐Wei; Xiao, Kai; Hennig, Richard G.; Sales, B. C.; Yan, Jiaqiang; Mandrus, David

doi:10.1063/1.4914134

Cited by 229 publications

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“…Similar short range effects appear in other antiferromagnets including CrSiTe 3 , SrMnO 3 , TbInO 3 , and Cu(pyz) 2 HF 2 BF 4 . [37][38][39][40] The phase diagram of this molecule-based multiferroic is analogous to that of other quantum magnets like Mn[N(CN) 2 ] 2 and MnCl 2 (urea) 2 25,26,42 in that it contains only spin flop and saturation fields, although in this system, we have not only an adaptable framework but also a mechanism for multiferroic behavior. Thus, as magnetic field drives across the spin flop and saturation transitions, changes in electronic properties may become apparent.…”

Section: Resultsmentioning

confidence: 99%

“…Recent work on other magnetic materials reveals that short range correlations can survive well above the ordering temperature -sometimes to a surprising extent. [37][38][39][40] In [(CH 3 ) 2 NH 2 ]Mn(HCOO) 3 , this suggests that the magnetic aspects of multiferroicity can persist to much higher temperatures than previously supposed and certainly much higher than T N =8.5 K. Bringing these results together, we generated the magnetic field-temperature phase diagram of [(CH 3 ) 2 NH 2 ]Mn(HCOO) 3 (Fig. 4).…”

Section: Resultsmentioning

confidence: 99%

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Magnetic field-temperature phase diagram of multiferroic [(CH3)2NH2]Mn(HCOO)3<

et al. 2017

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We combined pulsed field magnetization and first principles spin density calculations to reveal the magnetic field-temperature phase diagram and spin state character in multiferroic [(CH3)2NH2]Mn(HCOO)3. Despite similarities with the rare earth manganites, the phase diagram is analogous to other Mn-based quantum magnets with a 0.31 T spin flop, a 15.3 T transition to the fully polarized state, and short range correlations that persist above the ordering temperature. The experimentally accessible saturation field opens the door to exploration of the high field phase.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Magnetic field-temperature phase diagram of multiferroic [(CH3)2NH2]Mn(HCOO)3<

et al. 2017

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“…This tetragonal to triclinic transition is not accompanied by any volume discontinuity and only involves a very weak modification of the lattice parameters from a = 8.325(1)Å and c = 5.090(1)Å at 300 K to a = 8.292(1)Å, b = 8.280(1)Å, and c = 5.067(1)Å together with unit-cell angles of α = 90.44(1) • , β = 90.60(1) • , and γ = 90.07(1) • at 4 K. In order to evaluate the impact of this distortion on the magnetic couplings, broken-symmetry calculations performed using the experimental structure determined at 300 K have been extended to a set of 61 structures obtained from the Rietveld refinement of neutron powder diffraction experiments carried out from 2 to 300 K. The results are summarized in Fig. 3(a) where data points are represented by dots and a smooth interpolation using Boltzmann sigmoids [32] is superimposed. It should be mentioned that the weakness of the triclinic distortion close to the transition temperature leads to large standard deviations in the Rietveld refinements and partly explains the noise visible in the results shown in Fig.…”

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Magnetic dimerization in the frustrated spin ladder Li2Cu2O(SO4)2

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“…Recent theoretical and experimental progress has identified several layered compounds as promising candidates to host magnetism in their thinfilm limit [5][6][7][8][9][10]. One of them is MnPSe 3 , a semiconductor with collinear antiferromagnetic order within each layer.…”

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Gate-Controllable Magneto-optic Kerr Effect in Layered Collinear Antiferromagnets

2016

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Using symmetry arguments and a tight-binding model, we show that for layered collinear antiferromagnets, magneto-optic effects can be generated and manipulated by controlling crystal symmetries through a gate voltage. This provides a promising route for electric field manipulation of the magneto-optic effects without modifying the underlying magnetic structure. We further demonstrate the gate control of magneto-optic Kerr effect (MOKE) in bilayer MnPSe3 using first-principles calculations. The field-induced inversion symmetry breaking effect leads to gate-controllable MOKE whose direction of rotation can be switched by the reversal of the gate voltage.PACS numbers: 75.50. Ee,75.70.Ak,78.20.Ls,85.70.Sq Magneto-optic effects are one of the defining features of time-reversal (T ) symmetry breaking in matter. Usually, the T symmetry is broken either by an external magnetic field, or by the spontaneous appearance of a macroscopic magnetization such as in ferromagnets. Similar to their ferromagnetic counterparts, the T symmetry is also broken in antiferromagnets. However, because of their vanishing net magnetization one would naively expect an absence of magneto-optic effects in antiferromagnets. This assumption has been recently challenged by the theoretical demonstration of a rather large magneto-optic Kerr effect (MOKE) in certain non-collinear antiferromagnets with zero net magnetization [1]. This effect is closely related to the anomalous Hall effect predicted in the same class of materials [2,3], both of which are dictated by the absence of certain crystal symmetries. The appearance of magneto-optic effects in antiferromagnets is of intrinsic interest, since it would allow direct detection of the magnetic order and therefore could be useful for antiferromagnets-based memory devices [4].While non-collinear antiferromagnets have been the focus of recent interest [1][2][3], in this Letter we show that magneto-optic effects can also exist in the more commonly available collinear antiferromagnets. We start by analyzing the general symmetry requirements for magneto-optic effects, and demonstrate the symmetry principles by constructing a tight-binding model with a collinear Néel type order. We show that, contrary to the general belief, lifting the spin degeneracy of the energy bands is not a sufficient condition to generate magnetooptic effects; it is the crystal symmetry that actually controls these effects.Based on this understanding, we predict that a perpendicular electric field can be used to generate and control the MOKE in layered antiferromagnets using firstprinciples calculations. Recent theoretical and experimental progress has identified several layered compounds as promising candidates to host magnetism in their thinfilm limit [5][6][7][8][9][10]. One of them is MnPSe 3 , a semiconductor with collinear antiferromagnetic order within each layer. We show that the field-induced inversion (I) symmetry breaking in bilayer MnPSe 3 gives rise to a MOKE whose direction of rotation can be switched by the reversal...

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Strong spin-lattice coupling in CrSiTe3

Cited by 229 publications

References 59 publications

Magnetic field-temperature phase diagram of multiferroic [(CH3)2NH2]Mn(HCOO)3<

Magnetic field-temperature phase diagram of multiferroic [(CH3)2NH2]Mn(HCOO)3<

Magnetic dimerization in the frustrated spin ladder Li2Cu2O(SO4)2

Gate-Controllable Magneto-optic Kerr Effect in Layered Collinear Antiferromagnets

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