Zobrazeno 1 - 10
of 178
pro vyhledávání: '"Kimber, Simon A. J."'
Autor:
Kimber, Simon A. J., Zhang, Jiayong, Liang, Charles H., Guzman-Verri, Gian G., Littlewood, Peter B., Cheng, Yongqiang, Abernathy, Douglas L., Hudspeth, Jessica M., Luo, Zhong-Zhen, Kanatzidis, Mercouri G., Chatterji, Tapan, Ramirez-Cuesta, Anibal J., Billinge, Simon J. L.
Publikováno v:
Nature Materials, 22, 311-315 (2023)
Cubic energy materials such as thermoelectrics or hybrid perovskite materials are often understood to be highly disordered. In GeTe and related IV-VI compounds, this is thought to provide the low thermal conductivities needed for thermoelectric appli
Externí odkaz:
http://arxiv.org/abs/2202.05565
Autor:
Lawler, Keith V., Smith, Dean, Evans, Shaun R., Santos, Antonio M. dos, Molaison, Jamie J., Bos, Jan-Willem G., Mutka, Hannu, Henry, Paul F., Argyriou, Dimitri N., Salamat, Ashkan, Kimber, Simon A. J.
The $A$MnO$_{2}$ delafossites ($A$=Na, Cu), are model frustrated antiferromagnets, with triangular layers of Mn$^{3+}$~spins. At low temperatures ($T_{N}$=65 K), a $C2/m \rightarrow P\overline{1}$ transition is found in CuMnO$_2$, which breaks frustr
Externí odkaz:
http://arxiv.org/abs/2104.06281
Publikováno v:
J. Phys.: Condens. Matter 32 445802 (2020)
The Ising triangular lattice remains the classic test-case for frustrated magnetism. Here we report neutron scattering measurements of short range magnetic order in CuMnO$_2$, which consists of a distorted lattice of Mn$^{3+}$ spins with single-ion a
Externí odkaz:
http://arxiv.org/abs/2006.06273
Publikováno v:
Scientific Reports, 8, 17637 (2018)
We study the spontaneous crystallization of an assembly of highly monodisperse steel spheres under shaking, as it evolves from localized icosahedral ordering towards a packing reaching crystalline ordering. Towards this end, real space neutron tomogr
Externí odkaz:
http://arxiv.org/abs/1812.01959
Autor:
Jimenez-Segura, Marco-Polo, Ikeda, Atsutoshi, Kimber, Simon A. J., Giacobbe, Carlotta, Yonezawa, Shingo, Maeno, Yoshiteru
The honeycomb-lattice ruthenate Li$_2$RuO$_3$ is made heavily Li-deficient by chemical oxidation by iodine. The delithiation triggers a different phase Li$_{2-x}$RuO$_3$, the "D-phase", with superlattice. For the first time we disclose the magnetic a
Externí odkaz:
http://arxiv.org/abs/1603.08764
The prototypical phase change material GeTe shows an enigmatic phase transition at Tc ca. 650 K from rhombohedral (R3m) to cubic (Fm-3m) symmetry. While local probes see little change in bonding, in contrast, average structure probes imply a displaci
Externí odkaz:
http://arxiv.org/abs/1506.08944
Publikováno v:
Science, 347, 292-4 (2015)
Colloidal nanoparticles, used for applications from catalysis and energy applications to cosmetics, are typically embedded in matrixes or dispersed in solutions. The entire particle surface, which is where reactions are expected to occur, is thus exp
Externí odkaz:
http://arxiv.org/abs/1503.01887
Autor:
Kimber, Simon A. J., Chatterji, Tapan
Publikováno v:
J. Phys.: Condens. Matter 27 226003 (2015)
We report the characterisation of natural samples of the cubic pyrite mineral MnS2 using very high resolution synchrotron X-ray diffraction techniques. At low temperatures we find a new low temperature polymorph, which results from coupling between m
Externí odkaz:
http://arxiv.org/abs/1501.02129
Autor:
Kimber, Simon A. J.
Spin and orbital orderings are amongst the most important phenomena in the solid state chemistry of oxides. Physical property and powder neutron and X-ray diffraction measurements are reported for a range of mostly low dimensional ternary transition
Externí odkaz:
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.562313
Autor:
Kimber, Simon A. J., Mazin, I. I., Shen, Juan, Jeschke, Harald O., Streltsov, Sergey V., Argyriou, Dimitri N., Valenti, Roser, Khomskii, Daniel I.
Publikováno v:
Phys. Rev. B 89, 081408(R) (2014)
The honeycomb lattice material Li2RuO3 undergoes a dimerization of Ru4+ cations on cooling below 270C, where the magnetic susceptibility vanishes. We use density functional theory calculations to show that this reflects the formation of a 'valence bo
Externí odkaz:
http://arxiv.org/abs/1310.7810