Magnetic Structures of Holmium. I. The Virgin State

Koehler, W. C.; Cable, J. W.; Wilkinson, M. K.; Wollan, E. O.

doi:10.1103/physrev.151.414

Cited by 271 publications

(128 citation statements)

References 19 publications

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“…The magnetic structure of bulk Ho was investigated using neutron scattering by Koehler et al [13]. Below the Neel temperature (T N =132.2 K) the magnetic system of the hexagonal close packing structure of Ho orders in the spin helix.…”

Section: Pacs Numbersmentioning

confidence: 99%

Field-induced chirality in the helix structure of Ho/Y multilayers

Tarnavich

Lott

Mattauch³

et al. 2014

Phys. Rev. B

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Section: Pacs Numbersmentioning

confidence: 99%

Field-induced chirality in the helix structure of Ho/Y multilayers

Tarnavich

Lott

Mattauch³

et al. 2014

Phys. Rev. B

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“…Holmium is a rare earth metal with a complex magnetic phase diagram 16,17 . As the temperature is reduced from room temperature, Ho first undergoes a transition to a spinspiral antiferromagnetic (AFM) state with a Néel temperature of ~ 133K 16 .…”

Section: Methodsmentioning

confidence: 99%

“…As the temperature is reduced from room temperature, Ho first undergoes a transition to a spinspiral antiferromagnetic (AFM) state with a Néel temperature of ~ 133K 16 . In a previous study it was shown using polarised X-ray Bragg diffraction that there were domains of different chirality in the AFM state of a Ho single crystal 18 .…”

Section: Methodsmentioning

confidence: 99%

Evidence for spin mixing in holmium thin film and crystal samples

et al. 2011

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In a number of recent experiments, holmium has been shown to promote spin triplet pairing when in proximity to a spin singlet superconductor. The condition for the support of spin triplet pairing is that the ferromagnet should have an inhomogeneous magnetic state at the interface with the superconductor. Here we use Andreev reflection spectroscopy to study the properties of single ferromagnet/superconductor interfaces formed of holmium and niobium, as a function of the contact resistance of the junction between them. We find that both single crystal and c-axis oriented thin film holmium show unusual behavior for low junction contact resistance, characteristic of spin mixing type properties, which are thought necessary to underpin spin triplet formation. We also explore whether this signature is observed when the junction is formed of Ni 19 Pd 81 and niobium.

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“…and the reduced magnetization σ = S /S is derived from the neutron scattering in Ho [33]. By using Eq.…”

Section: Discussionmentioning

confidence: 99%

Theory of Spin Waves in Rare Earth Metals with Non-Linear <i>c</i>-<i>f</i> Exchange Interaction Effect

Kaino¹,

Kasuya²

2017

Forma

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Using a simple band model which produces a helical spin ordering, we show the magnetic phase diagram by minimizing the unperturbed energy which includes the c-f exchange interaction by replacing the f -spin operator S n with the expectation value S n . As the c-f exchange interaction increases, the helix and the cone structures appears without any crystal fields, and then the ferromagnetic structure becomes more stable. Secondly, we obtain formulae of spin-wave dispersions and show their instabilities on the second-order transition boundaries. Near the ferro-helix boundary, the spin-wave constant of the ferromagnetic spin-wave vanishes, while in the helical phase the whole region of the wave-number 0 < q z < Q shows softening where the helical wave-number Q decreases continuously. Thirdly, by the method of the double-time Green function, we derive the spin-wave dispersion at finite temperatures. Finally, anomalous properties in magnon dispersions at finite temperatures for Gd, Ho and those for diluted Tb-Y alloys are explained by use of numerical calculations.

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Magnetic Structures of Holmium. I. The Virgin State

Cited by 271 publications

References 19 publications

Field-induced chirality in the helix structure of Ho/Y multilayers

Field-induced chirality in the helix structure of Ho/Y multilayers

Evidence for spin mixing in holmium thin film and crystal samples

Theory of Spin Waves in Rare Earth Metals with Non-Linear <i>c</i>-<i>f</i> Exchange Interaction Effect

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