Evolution of field-induced metastable phases in the Shastry-Sutherland lattice magnet 
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Lançon, D.; Scagnoli, V.; Staub, U.; Petrenko, O. A.; Hatnean, Monica Ciomaga; Canévet, E.; Sibille, Romain; Francoual, S.; Mardegan, J. R. L.; Beauvois, K.; Heyderman, Laura J.; Rüegg, Ch.; Fennell, T.

doi:10.1103/physrevb.102.060407

Cited by 8 publications

(5 citation statements)

References 50 publications

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“…These results appear to be consistent with the observations in Ref. 25 , where in this part of the phase diagram many long-ranged ordered phases with different propagation vectors are observed, in particular when the applied field drives the system from one plateau phase to another. One should also mention that interesting field and temperature dependent effects are observed in other REB 4 compounds, e.g.…”

Section: Resultssupporting

confidence: 92%

“…Similarly, by means of neutron- and X-ray-scattering experiments and magnetization measurements, it was shown in Ref. 25 that the 1 / 8 FP is metastable, arising because the spin dynamics is frozen below T ≈ 4 . 5 K.…”

Section: Introductionmentioning

confidence: 89%

“…Quantum spins with AF coupling on frustrating lattices have attracted widespread interest due to the discovery of new types of complex quantum ground states as e.g. spin ice 1 , quantum spin liquid-like states 2 , and fractional magnetization plateaus on the Shastry–Sutherland lattice 3 , among them on SrCu 2 (BO 3 ) 2 4 – 9 as well as on the family of rare earth tetraborides, REB 4 (RE = Tm, Er, Ho, Dy, Tb, Gd, Sm, Nd) 10 – 25 . Even if they share the same frustrated lattice, the phase diagrams of the magnetic REB 4 compounds differ from SrCu 2 (BO 3 ) 2 .…”

Section: Introductionmentioning

confidence: 99%

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Ground state and stability of the fractional plateau phase in metallic Shastry–Sutherland system TmB4

Orendáč

Gabáni

Farkašovský

et al. 2021

Sci Rep

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We present a study of the ground state and stability of the fractional plateau phase (FPP) with M/Msat = 1/8 in the metallic Shastry–Sutherland system TmB4. Magnetization (M) measurements show that the FPP states are thermodynamically stable when the sample is cooled in constant magnetic field from the paramagnetic phase to the ordered one at 2 K. On the other hand, after zero-field cooling and subsequent magnetization these states appear to be of dynamic origin. In this case the FPP states are closely associated with the half plateau phase (HPP, M/Msat = ½), mediate the HPP to the low-field antiferromagnetic (AF) phase and depend on the thermodynamic history. Thus, in the same place of the phase diagram both, the stable and the metastable (dynamic) fractional plateau (FP) states, can be observed, depending on the way they are reached. In case of metastable FP states thermodynamic paths are identified that lead to very flat fractional plateaus in the FPP. Moreover, with a further decrease of magnetic field also the low-field AF phase becomes influenced and exhibits a plateau of the order of 1/1000 Msat.

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Section: Resultssupporting

confidence: 92%

Section: Introductionmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Ground state and stability of the fractional plateau phase in metallic Shastry–Sutherland system TmB4

Orendáč

Gabáni

Farkašovský

et al. 2021

Sci Rep

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“…As a consequence, many RB 4 compounds show a number of competing phases at low temperatures [12]. A seemingly generic feature in the RB 4 compounds, which raised considerable interest, is the appearance of fractional magnetization plateaus as seen in NdB 4 [13], TbB 4 [14,15], HoB 4 [16], ErB 4 [16,17], and TmB 4 [18][19][20]. While many frustrated systems realize quantum magnets, rare-earth ions exhibit large magnetic moments, which makes rare-earth compounds prime systems for investigating frustrated behavior in the classical limit.…”

Section: Introductionmentioning

confidence: 99%

Magnetic phase diagram and magnetoelastic coupling of NdB4 studied by high-resolution capacitance dilatometry up to 35 T

Ohlendorf,

Spachmann,

Fischer

et al. 2023

Phys. Rev. B

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We report high-resolution dilatometry studies on single crystals of the Shastry-Sutherland-lattice magnet NdB 4 supported by specific heat and magnetometry data. Our dilatometric studies evidence pronounced anomalies at the phase boundaries, which imply strong magnetoelastic coupling. The evolution of the three zero-field phase transitions separating distinct antiferromagnetic phases at T N = 17.2 K, T IT = 6.8 K, and T LT = 4.8 K can thus be traced in applied magnetic fields, which provides the magnetic phase diagrams for B c up to 15 T and for B [110] up to 35 T. In-field phases are discovered for both field directions and already known phases are confirmed. In particular, phase boundaries between different phases are unambiguously shown by sign changes of observed anomalies and corresponding changes in uniaxial pressure effects. For B||c, we find a 1/4-magnetization plateau in addition to a previously reported plateau at 1/5 of the saturation magnetization. T N increases for B c in fields up to 15 T implying that magnetic moments of the all-in/all-out structure in the high-temperature AFM ordered phase are driven towards the c axis in high magnetic fields. Uniaxial pressure dependencies ∂T crit /∂ p c of the phase transition temperatures for magnetic fields and pressure applied along the c axis are derived from the data.

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“…In the magnetization curve of TmB 4 also various plateaus were observed with values 1/2, 1/8 of the saturation magnetization M sat [12,15]. Recently it was argued that the 1/8 plateau is metastable, arising because the spin dynamics is frozen below T ≈ 4.5 K [15,16].…”

Section: Introductionmentioning

confidence: 99%

Tuning the magnetocaloric effect in the Lu-doped frustrated Shastry-Sutherland system TmB4

et al. 2020

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TmB 4 is an anisotropic, metallic magnetic system with geometrical frustration of the Shastry-Sutherland type. Here an experimental study of the magnetocaloric effect (MCE) in Lu doped Tm 1-x Lu x B 4 (x = 0.06, 0.30), evaluated from the temperature dependence of heat capacity and magnetization curves at 2 K, is presented. The results are described within a theoretical model based on an extended Ising Hamiltonian which considers interactions up to the 4th next nearest neighbours. Model parameters were optimized to achieve the best match to the experimental results over the whole range of Lu 3+ ion concentrations. After optimisation a good quantitative agreement with the adiabatic temperature change and a good qualitative agreement with magnetization curves is obtained. Our study shows that the efficiency of the MCE can be tuned by dilution with non-magnetic Lu ions. The theoretical model developed could be used to design new magnetocaloric materials.

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Evolution of field-induced metastable phases in the Shastry-Sutherland lattice magnet TmB4

Cited by 8 publications

References 50 publications

Ground state and stability of the fractional plateau phase in metallic Shastry–Sutherland system TmB4

Ground state and stability of the fractional plateau phase in metallic Shastry–Sutherland system TmB4

Magnetic phase diagram and magnetoelastic coupling of NdB4 studied by high-resolution capacitance dilatometry up to 35 T

Tuning the magnetocaloric effect in the Lu-doped frustrated Shastry-Sutherland system TmB4

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