Superconductivity induced by spark erosion in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi mathvariant="normal">Zr</mml:mi><mml:msub><mml:mi mathvariant="normal">Zn</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>

Yelland, E. A.; Hayden, Stephen M; Yates, S. J. C.; Pfleiderer, C.; Uhlarz, M.; Vollmer, R.; Löhneysen, H. v.; Bernhoeft, N.; Smith, Robert P.; Saxena, S. S.; Kimura, Noriaki

doi:10.1103/physrevb.72.214523

Cited by 44 publications

(27 citation statements)

References 19 publications

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“…The resistivity of stoichiometric Ni 3 Al shows a pronounced NFL temperature dependence on either side of the transition, ∆ρ ∝ T n , with n somewhere between 3/2 and 5/3 (Fluitman et al, 1973;Pfleiderer, 2007;Steiner et al, 2003). At ambient pressure and in zero magnetic field Steiner et al (2003) found n = 1.65 for temperatures between about 0.5 and 3.5 K. The prefactor is comparable with that of the T 3/2 behavior of the resistivity in ZrZn 2 (Pfleiderer et al, 2001b;Yelland et al, 2005).…”

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confidence: 75%

Metallic quantum ferromagnets

et al. 2016

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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.

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confidence: 75%

Metallic quantum ferromagnets

et al. 2016

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“…Here more recent work suggests that the superconductivity is not intrinsic, but due to the Zn depletion of spark eroded sample surfaces (Yelland et al, 2005).…”

Section: B Border Of Ferromagnetismmentioning

confidence: 98%

Superconducting phases off-electron compounds

2009

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Intermetallic compounds containing f-electron elements display a wealth of superconducting phases, that are prime candidates for unconventional pairing with complex order parameter symmetries. For instance, superconductivity has been found at the border of magnetic order as well as deep within ferro-and antiferromagnetically ordered states, suggesting that magnetism may promote rather than destroy superconductivity. Superconductivity near valence transitions, or in the vicinity of magneto-polar order are candidates for new superconductive pairing interactions such as fluctuations of the conduction electron density or the crystal electric field, respectively. The experimental status of the study of the superconducting phases of f-electron compounds is reviewed.

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“…5 Interestingly, superconductivity originates from the surface alloy rich in Zn. 6 In addition, the spin-singlet pairing superconductivity and magnetic order parameters entwine each other in a spatially modulated pattern, which allows for their mutual coexistence in for example borocarbides, 7 CeCoIn 5 in high magnetic fields, 8,9 HoMo 6 S 8 , 10 P doped EuFe 2 As 2 , 11 and ErRh 4 B 4 .…”

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confidence: 99%

Surface-induced magnetic fluctuations in a single-crystal NiBi3superconductor

et al. 2012

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We report anistropy in superconducting and normal state of NiBi3 single crystals with Tc = 4.06 K. The magnetoresistance results indicate the absence of scattering usually associated with ferromagnetic metals, suggesting the absence of bulk long range magnetic order below 300 K. However, the electron spin resonance results demonstrate that ferromagnetism fluctuations exist on the surface of the crystal below 150K.

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Superconductivity induced by spark erosion inZrZn2

Cited by 44 publications

References 19 publications

Metallic quantum ferromagnets

Metallic quantum ferromagnets

Superconducting phases off-electron compounds

Surface-induced magnetic fluctuations in a single-crystal NiBi3superconductor

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