P J Ryan
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Explore the profile of P J Ryan including associated specialties, affiliations and a list of published articles.
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Articles
127
Citations
920
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Recent Articles
1.
Ryan P, Rutherford J, Rafferty M, Arnous S, Abbas A, McCormack I, et al.
Ir Med J
. 2024 Jul;
117(6):977.
PMID: 39041538
No abstract available.
2.
Ryan P, Elmore S, Harrison J, Lovell J, Stephen R
Rev Sci Instrum
. 2023 Oct;
94(10).
PMID: 37782217
A detailed description of the Langmuir probe system on Mega Ampere Spherical Tokamak Upgrade is presented. The system features 850 tile-embedded probes and 40 bespoke electronic modules that each have...
3.
Nan T, Quintela C, Irwin J, Gurung G, Shao D, Gibbons J, et al.
Nat Commun
. 2020 Sep;
11(1):4671.
PMID: 32938910
The interconversion of charge and spin currents via spin-Hall effect is essential for spintronics. Energy-efficient and deterministic switching of magnetization can be achieved when spin polarizations of these spin currents...
4.
Meyers D, Cao Y, Fabbris G, Robinson N, Hao L, Frederick C, et al.
Sci Rep
. 2019 Mar;
9(1):4263.
PMID: 30862782
Fundamental control of magnetic coupling through heterostructure morphology is a prerequisite for rational engineering of magnetic ground states. We report the tuning of magnetic interactions in superlattices composed of single...
5.
Lee D, Chung B, Shi Y, Kim G, Campbell N, Xue F, et al.
Science
. 2018 Dec;
362(6418):1037-1040.
PMID: 30498123
The metal-insulator transition in correlated materials is usually coupled to a symmetry-lowering structural phase transition. This coupling not only complicates the understanding of the basic mechanism of this phenomenon but...
6.
Ferromagnetism and Charge Order from a Frozen Electron Configuration in Strained Epitaxial LaCoO_{3}
Sterbinsky G, Nanguneri R, Ma J, Shi J, Karapetrova E, Woicik J, et al.
Phys Rev Lett
. 2018 May;
120(19):197201.
PMID: 29799260
We report ordering of the cobalt electron configuration in ferromagnetic strained epitaxial LaCoO_{3}. Specifically, the presence of charge order is demonstrated from distinct features of the resonant cobalt contribution to...
7.
Middey S, Meyers D, Kareev M, Cao Y, Liu X, Shafer P, et al.
Phys Rev Lett
. 2018 May;
120(15):156801.
PMID: 29756872
Coupled transitions between distinct ordered phases are important aspects behind the rich phase complexity of correlated oxides that hinder our understanding of the underlying phenomena. For this reason, fundamental control...
8.
Cao Y, Wang Z, Park S, Yuan Y, Liu X, Nikitin S, et al.
Nat Commun
. 2018 Apr;
9(1):1547.
PMID: 29670098
Polar metals, commonly defined by the coexistence of polar crystal structure and metallicity, are thought to be scarce because the long-range electrostatic fields favoring the polar structure are expected to...
9.
Meyers D, Liu J, Freeland J, Middey S, Kareev M, Kwon J, et al.
Sci Rep
. 2016 Jun;
6:27934.
PMID: 27324948
In complex materials observed electronic phases and transitions between them often involve coupling between many degrees of freedom whose entanglement convolutes understanding of the instigating mechanism. Metal-insulator transitions are one...
10.
Kim T, Puggioni D, Yuan Y, Xie L, Zhou H, Campbell N, et al.
Nature
. 2016 Apr;
533(7601):68-72.
PMID: 27096369
Gauss's law dictates that the net electric field inside a conductor in electrostatic equilibrium is zero by effective charge screening; free carriers within a metal eliminate internal dipoles that may...