Výsledky vyhledávání - "A. J. Princep"

Magnetically driven loss of centrosymmetry in metallic Pb2CoOsO6

Autor: Andrew T. Boothroyd, Yoshitaka Matsushita, Anatoliy Senyshyn, M. C. Rahn, S. J. Blundell, Franz Lang, Dmitry D. Khalyavin, Yanfeng Guo, A. J. Princep, Pascal Manuel, Kazunari Yamaura, Hongming Weng, Yahua Yuan, Hai L. Feng

We report magnetic, transport, neutron diffraction, and muon spin rotation data showing that Pb$_2$CoOsO$_6$, a newly synthesized metallic double-perovskite with a centrosymmetric space group at room temperature, exhibits a continuous second-order ph

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4b86dba51713bc128b5a9b21c672e8b9
https://ora.ox.ac.uk/objects/uuid:6f9aedd3-a1ff-4bf9-9789-2a5028edc2fc

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Magnetically induced metal-insulator transition in Pb2CaOsO6

Autor: Claire A. Murray, M. Moretti Sala, Yanfeng Guo, Yoshitaka Matsushita, Jie Chen, Masahiro Nagao, Andrew T. Boothroyd, Yoshihiro Tsujimoto, A. J. Princep, Kazunari Yamaura, M. C. Rahn, C. Donnerer, Dmitry D. Khalyavin, Hai L. Feng, J. G. Vale, Pascal Manuel, Henrik Jacobsen

Publikováno v: Physical Review B

We report on the structural, magnetic, and electronic properties of two new double-perovskites synthesized under high pressure; Pb2CaOsO6 and Pb2ZnOsO6. Upon cooling below 80 K, Pb2CaOsO6 simultaneously undergoes a metal--insulator transition and dev

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7120ee77cb8fa725cf29a227f08ca7b2
http://hdl.handle.net/11311/1155023

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Evidence for a Jeff=0 ground state and defect-induced spin glass behavior in the pyrochlore osmate Y2Os2O7

Autor: Yanfeng Guo, Donghang Yan, Henrik Jacobsen, I. da Silva, Craig V. Topping, Andrew T. Boothroyd, Y. G. Shi, Ch. J. Sahle, A. J. Princep, Franziska K. K. Kirschner, N. R. Davies, S. J. Blundell, Peter J. Baker, D. F. McMorrow, Matthew Bristow, M. C. Rahn, J. G. Vale

Publikováno v: Physical Review B. 99

We present AC and DC magnetometry, heat capacity, muon spin relaxation ($\ensuremath{\mu}\mathrm{SR}$), and resonant inelastic x-ray scattering (RIXS) studies of the pyrochlore osmate ${\mathrm{Y}}_{2}{\mathrm{Os}}_{2}{\mathrm{O}}_{7}$. Consistent wi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5bd0cffbfa23c7d66317893bcb799a5e
https://doi.org/10.1103/physrevb.99.174442

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Spin dynamics and exchange interactions in CuO measured by neutron scattering

Autor: S. M. Gaw, Russell A. Ewings, Sándor Tóth, D. Prabhakaran, E. Hamilton, Henrik Jacobsen, E. M. Hétroy Wheeler, A. J. Princep, M. Enderle, Andrew T. Boothroyd

The magnetic properties of CuO encompass several contemporary themes in condensed-matter physics, including quantum magnetism, magnetic frustration, magnetically-induced ferroelectricity, and orbital currents. Here we report polarized and unpolarized

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e18ef20ce8e13ead294b917b603021c7

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Covalency and vibronic couplings make a nonmagnetic j=3/2 ion magnetic

Autor: Peter Fulde, Nikolay A. Bogdanov, Lei Xu, Liviu Hozoi, A. J. Princep, Jeroen van den Brink

Publikováno v: npj Quantum Materials

For 4$d^1$ and 5$d^1$ spin-orbit-coupled electron configurations, the notion of nonmagnetic j=3/2 quartet ground state discussed in classical textbooks is at odds with the observed variety of magnetic properties. Here we throw fresh light on the elec

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::50830938334910a274cca592a3a2ffb7
https://doi.org/10.1038/npjquantmats.2016.29

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A ferroelectric-like structural transition in a metal

Autor: Yuichi Shirako, Yuichi Michiue, Kazunari Yamaura, Shan Yu, Andrew T. Boothroyd, Yanfeng Guo, A. J. Princep, Pascal Manuel, Youguo Shi, Kenji Tsuda, Dmitry D. Khalyavin, Masaki Akaogi, Masao Arai, Xia Wang, Nanlin Wang, Akira Sato

Publikováno v: Nature Materials. 12:1024-1027

Metals cannot exhibit ferroelectricity because static internal electric fields are screened by conduction electrons, but in 1965, Anderson and Blount predicted the possibility of a ferroelectric metal, in which a ferroelectric-like structural transit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4c934a159358504fe650dc1607d66421
https://doi.org/10.1038/nmat3754

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Coupling of magnetic order to planar Bi electrons in the anisotropic Dirac metals AMnBi(2) (A = Sr, Ca)

Autor: Yf F. Guo, Pascal Manuel, Aj J. Princep, At T. Boothroyd, Yg G. Shi, Dmitry D. Khalyavin, Xiuhui Zhang, Igor Mazin

We report powder and single crystal neutron diffraction measurements of the magnetic order in AMnBi2 (A = Sr and Ca), two layered manganese pnictides with anisotropic Dirac fermions on a Bi square net. Both materials are found to order at TN approx 3

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1ed0c4471d23305c56238277745a3686
https://ora.ox.ac.uk/objects/uuid:1563f321-3eb1-47b6-9ce4-6129777b3bc9

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Sc2NiMnO6: A Double-Perovskite with a Magnetodielectric Response Driven by Multiple Magnetic Orders

Autor: Anatoliy Senyshyn, Igor A. Presniakov, Pascal Manuel, A. J. Princep, Wei Yi, Yanfeng Guo, Andrew T. Boothroyd, Alexey V. Sobolev, Masahiko Tanaka, Alexei A. Belik, Yoshitaka Matsushita, Dmitry D. Khalyavin, Roger Johnson

Publikováno v: Inorganic chemistry. 54(16)

Perovskite materials provide a large variety of interesting physical properties and applications. Here, we report on unique properties of a fully ordered magnetodielectric double-perovskite, Sc2NiMnO6 (space group P21/n, a = 4.99860 A, b = 5.35281 A,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2f9b3c55146e84bb2cb9e20fb3f2550b
https://pubmed.ncbi.nlm.nih.gov/26241691

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Crystal field states ofTb3+in the pyrochlore spin liquidTb2Ti2O7from neutron spectroscopy

Autor: D. T. Adroja, A. J. Princep, D. Prabhakaran, Helen Walker, Andrew T. Boothroyd

Publikováno v: Physical Review B. 91

We report time-of-flight neutron scattering measurements of the magnetic spectrum of ${\mathrm{Tb}}^{3+}$ in ${\mathrm{Tb}}_{2}{\mathrm{Ti}}_{2}{\mathrm{O}}_{7}$. The data, which extend up to 120 meV and have calibrated intensity, enable us to consol

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5bb0efd697856ff3d64c15346482a8d8
https://doi.org/10.1103/physrevb.91.224430

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Magnetic ground state of Dy3+ in DyNiAl4

Autor: D. H. Ryan, Glen A. Stewart, A. J. Princep, Wayne D. Hutchison, J. M. Cadogan, Ross Stewart

Publikováno v: AIP Advances, Vol 7, Iss 5, Pp 055702-055702-5 (2017)

Previously, the bulk magnetisation of polycrystalline DyNiAl4 was found to reach barely half its expected saturation value with a 9 T applied field. New inelastic neutron scattering and 161Dy-Mössbauer spectroscopy results suggest that the crystal f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2f7156ed41446547d5f01ac62452de08
https://doi.org/10.1063/1.4972997

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