Spin rotation induced by applied pressure in the Cd-doped 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Ce</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>RhIn</mml:mi><mml:mn>8</mml:mn></mml:msub></mml:mrow></mml:math>
 intermetallic compound

Christovam, D. S.; Giles, C.; Mendonça-Ferreira, L.; Leão, Juscelino B.; Ratcliff, William; Lynn, J. W.; Ramos, S. M.; Hering, E. N.; Hidaka, Hisao; Baggio-Saitovich, E.; Fisk, Z.; Pagliuso, P. G.; Adriano, C.

doi:10.1103/physrevb.100.165133

Cited by 3 publications

(1 citation statement)

References 31 publications

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“…Correspondingly, the superconducting phases have lower T c values of 0.4 and 0.68 K for Ce 2 CoIn 8 [10] and Ce 2 PdIn 8 [11] at ambient pressure and a maximum of T c = 2 K at 2.3 GPa for Ce 2 RhIn 8 [12]. On the other hand, these different series of related Ce-based heavy-fermion systems also exhibit different magnetic ground states and crystalline electric field (CEF) level schemes [13][14][15][16][17], and therefore, it is challenging to disentangle the role of these factors from that of the reduced dimensionality. The elucidation of the interplay between these different aspects requires examining additional families of layered Ce-based heavy-fermion systems for quantum critical behaviors as well as detailed characterizations of the magnetic ground states and exchange interactions.…”

Section: Introductionmentioning

confidence: 99%

Magnetic properties of the layered heavy-fermion antiferromagnetCePdGa6

et al. 2022

Phys. Rev. B

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We report the magnetic properties of the layered heavy-fermion antiferromagnet CePdGa 6 and their evolution upon tuning with the application of magnetic field and pressure. CePdGa 6 orders antiferromagnetically below T N = 5.2 K, where there is evidence for heavy-fermion behavior from an enhanced Sommerfeld coefficient. Our results are best explained by a magnetic ground state of ferromagnetically coupled layers of Ce 4 f moments orientated along the c axis, with antiferromagnetic coupling between layers. At low temperatures, we observe two metamagnetic transitions for fields applied along the c axis corresponding to spin-flip transitions, where the lower transition is to a different magnetic phase with a magnetization one-third of the saturated value. From our analysis of the magnetic susceptibility, we propose a crystalline electric field level scheme which accounts for the Ising anisotropy at low temperatures, and we find that the evolution of the magnetic ground state can be explained considering both antiferromagnetic exchange between nearest neighbor and next-nearest neighbor layers, indicating the influence of long-range interactions. Meanwhile, we find little change of T N upon applying hydrostatic pressures up to 2.2 GPa, suggesting that significantly higher pressures are required to examine for possible quantum critical behaviors.

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Section: Introductionmentioning

confidence: 99%

Magnetic properties of the layered heavy-fermion antiferromagnetCePdGa6

et al. 2022

Phys. Rev. B

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Evolution of the magnetic properties in the antiferromagnet Ce2RhIn8 simultaneously doped with Cd and Ir

et al. 2020

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X-ray spectroscopic investigation of crystal fields in Ce2Rh1−xIrxIn8 heavy fermions

Christovam,

Marino,

Falke

et al. 2024

Phys. Rev. B

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The higher dimensionality in the crystal fields of the Ce2MIn8 (M=Rh,Ir) compounds and its interplay with hybridization and disorder are key ingredients to understand the complex phase diagrams by this family, which have been explored extensively by macroscopic techniques. Here, we present an investigation of the crystal-electric field schemes of Ce2Rh1−xIrxIn8 using x-ray absorption spectroscopy. Our full multiplet calculations for the 4f1 configuration of Ce3+ to describe the temperature-dependent linear dichroism in Ce2MIn8 are consistent with a Γ71=1−α2·|∓32〉−|α|·|±52〉 ground state containing a predominant |±3/2〉 contribution that increases further with x. This enhancement is believed to favor superconductivity in Ce-based heavy fermion materials, observed in previous results in the CeMIn5 family. Our recent observations shed light on the unexpected emergence of the ambient-pressure superconducting dome in the center of the composition phase diagram and its subsequent suppression on the Ir-rich side due to the early onset of fluctuations associated with the structurally more disordered state, inferred from previous neutron magnetic diffraction experiments. Published by the American Physical Society 2024

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Spin rotation induced by applied pressure in the Cd-doped Ce2RhIn8 intermetallic compound

Cited by 3 publications

References 31 publications

Magnetic properties of the layered heavy-fermion antiferromagnetCePdGa6

Magnetic properties of the layered heavy-fermion antiferromagnetCePdGa6

Evolution of the magnetic properties in the antiferromagnet Ce2RhIn8 simultaneously doped with Cd and Ir

X-ray spectroscopic investigation of crystal fields in Ce2Rh1−xIrxIn8 heavy fermions

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