Fractional Magnetization Plateaus and Magnetic Order in the Shastry-Sutherland Magnet<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>TmB</mml:mi><mml:mn>4</mml:mn></mml:msub></mml:math>

Siemensmeyer, K.; Wulf, E.; Mikeska, H. J.; Flachbart, К.; Gabáni, S.; Maťaš, S.; Priputen, P.; Efdokimova, A.; Shitsevalova, N. Yu.

doi:10.1103/physrevlett.101.177201

Cited by 157 publications

(225 citation statements)

References 24 publications

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“…22 Frustration also means that the system might be sensitive to external perturbations such as magnetic field. 38,39 Indeed, novel magnetic phases such as fractional magnetization plateaus 40,41 or skyrmion crystals 42,43 can be stabilized by a magnetic field in several highly frustrated magnets.…”

Section: Introductionmentioning

confidence: 99%

Kitaev-Heisenberg model in a magnetic field: Order-by-disorder and commensurate-incommensurate transitions

et al. 2017

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We present a theoretical study of field-induced magnetic phases in the honeycomb KitaevHeisenberg model, which is believed to describe the essential physics of Mott insulators with strong spin-orbit coupling such as A2IrO3 and α-RuCl3. We obtain rich finite temperature phase diagram in which the competition between the Zeeman coupling and thermal fluctuations gives rise to both collinear zigzag phases and non-coplanar magnetic orders. Our large-scale classical MonteCarlo simulations also unveil intriguing commensurate-incommensurate transitions and multiple-Q incommensurate phases at high field. Experimental implications are also discussed.

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Section: Introductionmentioning

confidence: 99%

Kitaev-Heisenberg model in a magnetic field: Order-by-disorder and commensurate-incommensurate transitions

et al. 2017

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“…These arise due to a diverse range of magnetic phases stabilized by a magnetic field across the family of compounds, including a ferrimagnetic state corresponding to M/M sat = 1 2 in ErB 4 [16], while TmB 4 has a complex striped structure consisting of regions of antiferromagnetic order, separated by ferromagnetic stripes 7 or 9 units cells apart corresponding to M/M sat = 1 7 and 1 9 , respectively. An additional plateau at M/M sat = 1 2 arises due to equally sized antiferromagnetic and ferromagnetic stripes [17].…”

Section: Introductionmentioning

confidence: 99%

Field-induced magnetic states in holmium tetraboride

et al. 2017

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A study of the zero field and field induced magnetic states of the frustrated rare earth tetraboride HoB 4 has been carried out using single crystal neutron diffraction complemented by magnetization measurements. In zero field, HoB 4 shows magnetic phase transitions at T N1 = 7.1 K to an incommensurate state with a propagation vector (δ,δ,δ ), where δ = 0.02 and δ = 0.43 and at T N2 = 5.7 K to a noncollinear commensurate antiferromagnetic structure. Polarized neutron diffraction measurements in zero field have revealed that the incommensurate reflections, albeit much reduced in intensity, persist down to 1.5 K despite antiferromagnetic ordering at 5.7 K. At lower temperatures, application of a magnetic field along the c axis initially re-establishes the incommensurate phase as the dominant magnetic state in a narrow field range, just prior to HoB 4 ordering with an up-up-down ferrimagnetic structure characterized by the (h k 1 3 )-type reflections between 18 and 24 kOe. This field range is marked by the previously reported M/M sat = 1 3 magnetization plateau, which we also see in our magnetization measurements. The region between 21 and 33 kOe is characterized by the increase in the intensity of the antiferromagnetic reflections, such as (100), the maximum of which coincides with the appearance of the narrow magnetization plateau with M/M sat ≈ 3 5 . Further increase of the magnetic field results in the stabilization of a polarized state above 33 kOe, while the incommensurate reflections are clearly present in all fields up to 59 kOe. We propose the H -T phase diagram of HoB 4 for the H c containing both stationary and transitionary magnetic phases which overlap and show significant history dependence.

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“…The metallic RB 4 (R = Ho,Er,Tm,Tb) compounds order AF with period-doubling Néel ground states with Ising-like moments oriented perpendicular to the SSL planes [13][14][15][16]. In metallic The neutron diffraction measurements presented here demonstrate that the in-plane Ising-like Yb moments in Yb 2 Pt 2 Pb have a remarkably complex magnetic structure, with a commensurate superlattice of ordered stripes consisting of moment-bearing and magnetically compensated Yb pairs with moments perpendicular to the (110) and (−110) dimer bonds.…”

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confidence: 99%

“…The metallic RB 4 (R = Ho,Er,Tm,Tb) compounds order AF with period-doubling Néel ground states with Ising-like moments oriented perpendicular to the SSL planes [13][14][15][16]. In metallic Yb 2 Pt 2 Pb, Yb moments form the orthogonal dimers of the SSL planes, and AF order appears below the Néel temperature T N = 2.07 K [17].…”

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Magnetic structure ofYb2Pt2Pb: Ising moments on the Shastry-Sutherland lattice

Miiller

Kim

et al. 2016

Phys. Rev. B

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Neutron diffraction measurements were carried out on single crystals and powders of Yb 2 Pt 2 Pb, where Yb moments form two interpenetrating planar sublattices of orthogonal dimers, a geometry known as ShastrySutherland lattice, and are stacked along the c axis in a ladder geometry. Yb 2 Pt 2 Pb orders antiferromagnetically at T N = 2.07 K, and the magnetic structure determined from these measurements features the interleaving of two orthogonal sublattices into a 5 × 5 × 1 magnetic supercell that is based on stripes with moments perpendicular to the dimer bonds, which are along (110) and (−110). Magnetic fields applied along (110) or (−110) suppress the antiferromagnetic peaks from an individual sublattice, but leave the orthogonal sublattice unaffected, evidence for the Ising character of the Yb moments in Yb 2 Pt 2 Pb that is supported by point charge calculations. Specific heat, magnetic susceptibility, and electrical resistivity measurements concur with neutron elastic scattering results that the longitudinal critical fluctuations are gapped with E 0.07 meV. DOI: 10.1103/PhysRevB.93.104419 Much attention is focused on coupled spin-dimer systems, where frustrated magnetic interactions can lead to spin liquid ground states [1,2]. The Shastry-Sutherland lattice (SSL), consisting of planes of orthogonal dimers with intradimer exchange J and interdimer exchange J , is of particular interest as it has been exactly solved [3] to show that the ground state is ordered antiferromagnetically (AF) for J /J less than a critical value (J /J ) C and otherwise has a singlet ground state with gapped magnetic excitations. Insulating SrCu 2 (BO 3 ) 2 is an example of the SSL dimer liquid ground state [4][5][6]. Here, frustrated exchange interactions tend to localize singlet and triplet dimers into complex ordered superstructures at high fields [7][8][9], resulting in quantized plateaus in the magnetic field B dependence of the magnetization M(B) [10][11][12].Most SSL systems are magnetically ordered, where the closure of the singlet dimer gap yields a nonzero magnetization that makes AF order possible even for B = 0. The metallic RB 4 (R = Ho,Er,Tm,Tb) compounds order AF with period-doubling Néel ground states with Ising-like moments oriented perpendicular to the SSL planes [13][14][15][16]. In metallic The neutron diffraction measurements presented here demonstrate that the in-plane Ising-like Yb moments in Yb 2 Pt 2 Pb have a remarkably complex magnetic structure, with a commensurate superlattice of ordered stripes consisting of moment-bearing and magnetically compensated Yb pairs with moments perpendicular to the (110) and (−110) dimer bonds. The magnetic cell contains 200 Yb atoms, whose Ising character results in the formation of two independent and orthogonal sublattices that are separately polarized by magnetic fields along either (110) or (−110). The persistence of AF order in the surviving AF sublattice shows that the two orthogonal bonds of the B = 0 SSL are effectively decoupled in magnetic field, leading to a un...

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Fractional Magnetization Plateaus and Magnetic Order in the Shastry-Sutherland MagnetTmB4

Cited by 157 publications

References 24 publications

Kitaev-Heisenberg model in a magnetic field: Order-by-disorder and commensurate-incommensurate transitions

Kitaev-Heisenberg model in a magnetic field: Order-by-disorder and commensurate-incommensurate transitions

Field-induced magnetic states in holmium tetraboride

Magnetic structure ofYb2Pt2Pb: Ising moments on the Shastry-Sutherland lattice

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