Výsledky vyhledávání - "Radaelli, Pg"

Activating magnetoelectric optical properties by twisting antiferromagnetic bilayers

Autor: Yananose, K, Radaelli, PG, Cuoco, M, Yu, J, Stroppa, A

Publikováno v: Physical Review B. 106

Twisting in bilayers introduces structural chirality with two enantiomers, i.e., left- and right-hand bilayers, depending on the oriented twist angle. The interplay between this global chirality and additional degrees of freedom, such as magnetic ord

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c80eb430e486f5c900d608ad59cec245
https://doi.org/10.1103/physrevb.106.184408

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Absolute crystal and magnetic chiralities in the langasite compound Ba3NbFe3Si2O14 determined by polarized neutron and x-ray scattering

Autor: Qureshi, N, Bombardi, A, Picozzi, S, Barone, P, Lelièvre-Berna, E, Xu, X, Stock, C, McMorrow, DF, Hearmon, A, Fabrizi, F, Radaelli, PG, Cheong, S-W, Chapon, LC

We present a combined polarized neutron and x-ray scattering study on two enantiopure langasite single crystals aimed at the determination of their absolute structural and magnetic chiralities and the coupling between them. Our respective data sets u

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______1064::db6f0857f01ae74374fea231b497db55
https://ora.ox.ac.uk/objects/uuid:61422a73-ef04-472f-b6d6-d9f1be469e4d

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Micromagnetic modelling and imaging of vortex|merons structures in an oxide|metal heterostructure

Autor: Radaelli, PG, Radaelli, J, Waterfield-Price, N, Johnson, RD

Using micromagnetic simulations, we have modelled the formation of imprinted merons and anti-merons in cobalt overlayers of different thickness (1-8 nm), stabilised by interfacial exchange with antiferromagnetic vortices in $\alpha$-Fe2O3. Structures

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ee2e954c394e51f03d5643fad11e3f1
http://arxiv.org/abs/1912.07511

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Crystal and magnetic structures of the colossal magnetoresistance manganates Sr2-xNd1+xMn2O7 (x=0.0, 0.1)

Autor: Battle, PD, Green, MA, Laskey, NS, Millburn, JE, Radaelli, PG, Rosseinsky, MJ, Sullivan, SP, Vente, JF

Neutron powder diffraction techniques have been used to refine the crystal and magnetic structures of the Ruddlesden Popper (RP) compounds Sr2-xNd1+xMn2O7 (x=0.0, 0.1), which show colossal magnetoresistance below 100 K. Samples of both compositions h

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::d583f3a0cedbdbcf1952adfbe5c74774
https://doi.org/10.1103/physrevb.54.15967

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Simultaneous structural, magnetic, and electronic transitions in La1-xCaxMnO3 with x=0.25 and 0.50

Autor: Radaelli, PG, Cox, DE, Marezio, M, Cheong, SW, Schiffer, PE, Ramirez, AP

The magnetic transitions in La1-xCaxMnO3 (x=0.25, 0.50) were studied by synchrotron x-ray and neutron powder diffraction. For x=0.25 the large V=0.13% at TC is due to the simultaneous insulator-to-metal transition. For x=0.50 below TC we observed a d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::8fa60127b20019be6b251651eefb49f9
https://ora.ox.ac.uk/objects/uuid:c39d6eff-cabc-41a4-90f3-d37511c96c44

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Structural inhomogeneities in oxygen-deficient ErBa2Cu3O6+x associated with the tetragonal-to-orthorhombic transition: Evidence of first-order behavior

Autor: Radaelli, PG, Segre, CU, Hinks, DG, Jorgensen, JD

Neutron powder diffraction and ac susceptibility data on a series of ErBa2Cu3O6+x samples prepared to achieve thermal equilibrium at low temperature provide evidence of structural inhomogeneities near the tetragonal-to- orthorhombic (T'O) transition.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::7d3e7e7e3de9aa4f74a6d3fe2dee8663
https://doi.org/10.1103/physrevb.45.4923

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Evidence of apical oxygen in Nd2CuOy determined by single-crystal neutron diffraction

Autor: Radaelli, PG, Jorgensen, JD, Schultz, AJ, Peng, JL, Greene, RL

The defect structure of oxygenated and reduced Nd2CuOy (y4) was investigated by single-crystal neutron diffraction. Structural refinements indicate the presence of interstitial oxygen atoms in the apical O(3) position, directly above or below the cop

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::708e7e6726eef7f35c293c2a6e1c552a
https://ora.ox.ac.uk/objects/uuid:b2b40980-88f8-42b5-b05e-f756a79b5707

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Tunneling spectroscopy into YBa2Cu4O8: Intralayer and interlayer analysis

Autor: Cucolo, AM, Leo, RD, Romano, P, Dabrowski, B, Hinks, DG, Radaelli, PG

We have measured the superconducting and normal tunneling characteristics of quality controlled planar junctions based on YBa2Cu4O8 (Y124) single crystals. Our data show that the in-plane properties are similar to the YBa2Cu3O7 (Y123) system. A highe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::3e2a8bf064f75fd9e40f2f9667f6142a
https://ora.ox.ac.uk/objects/uuid:e595ac00-b2f5-4b21-ac75-136d0c788c12

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