Suppression of ferromagnetism in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi mathvariant="normal">Ce</mml:mi><mml:msub><mml:mi mathvariant="normal">Si</mml:mi><mml:mn>1.81</mml:mn></mml:msub></mml:mrow></mml:math>under temperature and pressure

Drotziger, S.; Pfleiderer, C.; Uhlarz, M.; Löhneysen, H. v.; Souptel, D.; Löser, W.; Behr, G.

doi:10.1103/physrevb.73.214413

Cited by 30 publications

(22 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2,26,27,34 However, disorder undoubtedly plays a role in determining the ground state behavior in this system and likely perturbs the predicted behaviors, as is also seen for URh 1−x Ru x Ge and CeSi 1.81 . [35][36][37] We additionally speculate that the slight saturation in C/T for x = 0.22 occurs either due to disorder or being slightly away from the ideal x cr .…”

Section: Discussionmentioning

confidence: 83%

Ferromagnetic quantum critical point in UCo1−xFexGe

et al. 2013

View full text Add to dashboard Cite

We have carried out a comprehensive study of the UCo1−xFexGe series across the entire range of compositions 0 ≤ x ≤ 1, and report the results of x-ray diffraction, magnetization, specific heat, and electrical resistivity measurements to uncover the T − x phase diagram. Substitution of Fe into UCoGe initially results in an increase in the Curie temperature and a rapid destruction of the superconductivity. Near x = 0.22, the ferromagnetic transition is suppressed to zero temperature at an apparent ferromagnetic itinerant electron quantum critical point, where the temperature dependence of the electrical resistivity and specific heat in this region reveal non-Fermi liquid behavior.

show abstract

Section: Discussionmentioning

confidence: 83%

Ferromagnetic quantum critical point in UCo1−xFexGe

et al. 2013

View full text Add to dashboard Cite

show abstract

“…It crystallizes in the α-ThSi 2 structure with a broad homogeneity range, 1.7 ≤ x ≤ 2 (Ruggiero and Olcese, 1964;. It shows a paramagnetic ground state for x ≥ 1.85, while a magnetically ordered state was found for x ≤ 1.8 with a transition temperature around 10 K. The nature of the magnetic order is not clear (Drotziger et al, 2006). Susceptibility measurements suggest that the magnetic structure depends on the Si vacancy distribution (Shaheen and Mendoza, 1999), and magnetization measurements indicate that the ground state may not be pure FM, but rather a ferrimagnet or canted ferromagnet resulting from the RKKY interaction between the Ce 4f local moments on two different lattice sites (Drotziger et al, 2006).…”

Section: Systems Showing a Continuous Transitionmentioning

confidence: 99%

“…Susceptibility measurements suggest that the magnetic structure depends on the Si vacancy distribution (Shaheen and Mendoza, 1999), and magnetization measurements indicate that the ground state may not be pure FM, but rather a ferrimagnet or canted ferromagnet resulting from the RKKY interaction between the Ce 4f local moments on two different lattice sites (Drotziger et al, 2006). Drotziger et al (2006) studied the magnetization of a single crystal of CeSi 1.81 as a function of temperature and hydrostatic pressure. Pressure was found to suppress T C monotonically from its ambient-pressure value of 9.5 K. T C vanishes at a critical pressure p c ≈ 13.1 kbar, with a concomitant continuous suppression of the magnetic moment from 0.2 µ B /Ce to zero.…”

Section: Systems Showing a Continuous Transitionmentioning

confidence: 99%

See 1 more Smart Citation

Metallic quantum ferromagnets

et al. 2016

View full text Add to dashboard Cite

We give an overview of quantum phase transitions (QPTs) in metallic ferromagnets, discussing both experimental and theoretical aspects. These QPTs can be classified with respect to the presence and strength of quenched disorder: Clean systems generically show a discontinuous, or first-order, QPT from a ferromagnetic to a paramagnetic state as a function of some control parameter, as predicted by theory. Disordered systems are much more complicated, depending on the disorder strength and the distance from the QPT. In many disordered materials the QPT is continuous, or second order, and Griffiths-phase effects coexist with QPT singularities near the transition. In other systems the transition from the ferromagnetic state at low temperatures is to a different type of long-range order, such as an antiferromagnetic or a spin-density-wave state. In still other materials a transition to a state with glass-like spin dynamics is suspected. The review provides a comprehensive discussion of the current understanding of these various transitions, and of the relation between experiment and theory.

show abstract

“…Although the heavy-fermion systems are more often regarded as antiferromagnetic, ferromagnetism in these materials is not so rare. Interestingly, most of the examples contain cerium as the source of magnetism [3,4,5,6,7,8,9]. A special consideration is required for CeRuPO, whose isostructural sister CeOsPO is antiferromagnetic [7].…”

Section: Introductionmentioning

confidence: 99%

Influence of strain on the properties of CeRuPO and CeOsPO Kondo systems

Komelj

2015

Journal of Magnetism and Magnetic Materials

View full text Add to dashboard Cite

We investigated the influence of isotropic strain on the type of the magnetic ground-state and the Fermi surface for the structurally-equivalent CeRuPO and CeOsPO crystals with slightly different lattice parameters. The two systems exhibit different magnetic orderings at zero strain. According to the phase diagram of CeRuPO under pressure the difference might be due to the different Ce-Ce inter-atomic distances. We applied ab-initio calculations based on the density-functional theory and the generalized-gradient approximation with an additional Coulomb repulsion (GGA+U ), which indeed reveal a significant impact of the strain and the effective U parameter on the magnetic ground state.However, it is demonstrated that the difference is more likely related to the details in the Fermi surface.

show abstract

Suppression of ferromagnetism inCeSi1.81under temperature and pressure

Cited by 30 publications

References 36 publications

Ferromagnetic quantum critical point in UCo1−xFexGe

Ferromagnetic quantum critical point in UCo1−xFexGe

Metallic quantum ferromagnets

Influence of strain on the properties of CeRuPO and CeOsPO Kondo systems

Contact Info

Product

Resources

About