Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Boseggia, S."'
Autor:
Vale, J. G., Boseggia, S., Walker, H. C., Springell, R. S., Hunter, E. C., Perry, R. S., Collins, S. P., McMorrow, D. F.
X-ray magnetic critical scattering measurements and specific heat measurements were performed on the perovskite iridate Sr$_3$Ir$_2$O$_7$. We find that the magnetic interactions close to the N\'{e}el temperature $T_N$ = 283.4(2) K are three-dimension
Externí odkaz:
http://arxiv.org/abs/1812.08682
Autor:
Pincini, D., Boseggia, S., Perry, R., Gutmann, M. J., Riccò, S., Veiga, L. S. I., Dashwood, C. D., Collins, S. P., Nisbet, G., Bombardi, A., Porter, D. G., Baumberger, F., Boothroyd, A. T., McMorrow, D. F.
Publikováno v:
Phys. Rev. B 98, 014429 (2018)
The chemical and magnetic structures of the series of compounds Ca$_{2-x}$La$_x$RuO$_4$ [$x = 0$, $0.05(1)$, $0.07(1)$, $0.12(1)$] have been investigated using neutron diffraction and resonant elastic x-ray scattering. Upon La doping, the low tempera
Externí odkaz:
http://arxiv.org/abs/1805.05796
Autor:
Boseggia, S.
Transition metal oxides containing a 5d element are increasingly attracting attention as an arena in which to search for novel electronic states. These are proposed to derive from the interplay between the strong spin-orbit interaction (SOI) in the 5
Externí odkaz:
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.639622
Autor:
Vale, J. G., Boseggia, S., Walker, H. C., Springell, R., Feng, Z., Hunter, E. C., Perry, R. S., Prabhakaran, D., Boothroyd, A. T., Collins, S. P., Rønnow, H. M., McMorrow, D. F.
Publikováno v:
Phys. Rev. B 92, 020406(R), 2015
The magnetic critical scattering in Sr$_2$IrO$_4$ has been characterized using X-ray resonant magnetic scattering (XRMS) both below and above the 3D antiferromagnetic ordering temperature, T$_{\text{N}}$. The order parameter critical exponent below T
Externí odkaz:
http://arxiv.org/abs/1506.07720
Autor:
Sala, M. Moretti, Schnells, V., Boseggia, S., Simonelli, L., Al-Zein, A., Vale, J. G., Paolasini, L., Hunter, E. C., Perry, R. S., Prabhakaran, D., Boothroyd, A. T., Krisch, M., Monaco, G., McMorrow, H. M. Ronnow D. F., Mila, F.
Publikováno v:
Phys. Rev. B 92, 024405 (2015)
The magnetic excitation spectrum in the bilayer iridate Sr$_3$Ir$_2$O$_7$ has been investigated using high-resolution resonant inelastic x-ray scattering (RIXS) performed at the iridium L$_3$ edge and theoretical techniques. A study of the systematic
Externí odkaz:
http://arxiv.org/abs/1506.04877
Autor:
Sala, M. Moretti, Rossi, M., Al-Zein, A., Boseggia, S., Hunter, E. C., Perry, R. S., Prabhakaran, D., Boothroyd, A. T., Brookes, N. B., McMorrow, D. F., Monaco, G., Krisch, M.
Publikováno v:
Phys. Rev. B 90, 085126 (2014)
Non-resonant Raman spectroscopy in the hard X-ray regime has been used to explore the electronic structure of the first two members of the Ruddlesden-Popper series Sr$_{n+1}$Ir$_n$O$_{3n+1}$ of iridates. By tuning the photon energy transfer around 53
Externí odkaz:
http://arxiv.org/abs/1405.6522
Autor:
Sala, M. Moretti, Rossi, M., Boseggia, S., Akimitsu, J., Brookes, N. B., Isobe, M., Minola, M., Okabe, H., Ronnow, H. M., Simonelli, L., McMorrow, D. F., Monaco, G.
Publikováno v:
Phys. Rev. B 89, 121101(R) (2014)
The nature of the electronic groundstate of Ba2IrO4 has been addressed using soft X-ray absorption and inelastic scattering techniques in the vicinity of the oxygen K edge. From the polarization and angular dependence of XAS we deduce an approximatel
Externí odkaz:
http://arxiv.org/abs/1312.0857
Autor:
Boseggia, S., Walker, H. C., Vale, J., Springell, R., Feng, Z., Sala, M. Moretti, Rønnow, H. M., Collins, S. P., McMorrow, D. F.
Publikováno v:
J. Phys.: Condens. Matter 25 (2013) 422202
Sr2IrO4 is a prototype of the class of Mott insulators in the strong spin-orbit interaction (SOI) limit described by a $J_{\mathrm{eff}}=1/2$ ground state. In Sr2IrO4, the strong SOI is predicted to manifest itself in the slaving of the canting of th
Externí odkaz:
http://arxiv.org/abs/1308.6460
Publikováno v:
Phys. Rev. Lett. 112, 026403 (2014)
The resonant X-ray scattering (magnetic elastic, RXMS, and inelastic, RIXS) of Ir$^{4+}$ at the L$_{2,3}$ edges relevant to spin-orbit Mott insulators A$_{n+1}$Ir$_{n}$O$_{3n+1}$ (A=Sr, Ba, etc.) are calculated using a single-ion model which treats t
Externí odkaz:
http://arxiv.org/abs/1308.0128
Autor:
Boseggia, S., Springell, R., Walker, H. C., Rüegg, Ch., Okabe, H., Isobe, M., Perry, R. S., Collins, S. P., McMorrow, D. F.
Publikováno v:
Phys. Rev. Lett. 110, 117207 (2013)
The magnetic structure and electronic groundstate of the layered perovskite Ba2IrO4 have been investigated using x-ray resonant magnetic scattering (XRMS). Our results are compared with those for Sr2IrO4, for which we provide supplementary data on it
Externí odkaz:
http://arxiv.org/abs/1212.5912