Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Davies, N"'
Background: Instrumental variables (IVs) can be used to provide evidence as to whether a treatment X has a causal effect on an outcome Y. Even if the instrument Z satisfies the three core IV assumptions of relevance, independence and the exclusion re
Externí odkaz:
http://arxiv.org/abs/2010.10017
Autor:
Vale, J. G., Calder, S., Bogdanov, N. A., Donnerer, C., Sala, M. Moretti, Davies, N. R., Yamaura, J., Hiroi, Z., Mandrus, D., Brink, J. van den, Christianson, A. D., McMorrow, D. F.
Publikováno v:
Phys. Rev. B 101, 014441 (2020)
High-resolution resonant inelastic x-ray scattering (RIXS) measurements ($\Delta$E = 46 meV) have been performed on Cd$_2$Os$_2$O$_7$ through the metal-to-insulator transition (MIT). A magnetic excitation at 125 meV evolves continuously through the M
Externí odkaz:
http://arxiv.org/abs/1812.08689
Autor:
Davies, N. R., Topping, C. V., Jacobsen, H., Princep, A. J., Kirschner, F. K. K., Rahn, M. C., Bristow, M., Vale, J. G., da Silva, I., Baker, P. J., Sahle, Ch. J., Guo, Y. -F., Yan, D. -Y., Shi, Y. -G., Blundell, S. J., McMorrow, D. F., Boothroyd, A. T.
Publikováno v:
Phys. Rev. B 99, 174442 (2019)
We present AC and DC magnetometry, heat capacity, muon spin relaxation ($\mu$SR) and resonant inelastic X-ray scattering (RIXS) studies of the pyrochlore osmate Y$_2$Os$_2$O$_7$. We observe a non-zero effective moment governed by $\sqrt{f}\mu_{\rm{ef
Externí odkaz:
http://arxiv.org/abs/1808.01530
Autor:
Kirk, A, Adamek, J, Akers, RJ, Allan, S, Appel, L, Lucini, F Arese, Barnes, M, Barrett, T, Ayed, N Ben, Boeglin, W, Bradley, J, Browning, P K, Brunner, J, Cahyna, P, Carr, M, Casson, F, Cecconello, M, Challis, C, Chapman, IT, Chapman, S, Conroy, S, Conway, N, Cooper, WA, Cox, M, Crocker, N, Crowley, B, Cardnell, S, Chorley, J, Cunningham, G, Danilov, A, Darrow, D, Dendy, R, Dickinson, D, Dorland, W, Dudson, B, Easy, L, Elmore, S, Evans, M, Farley, T, Fedorczak, N, Field, A, Fitzgerald, I, Fox, M, Freethy, S, Garzotti, L, Ghim, YC, Gi, K, Gorelenkova, M, Gracias, W, Gurl, C, Guttenfelder, W, Ham, C, Harting, D, Havlickova, E, Hawkes, N, Hender, T, Henderson, S, Hillesheim, J, Hnat, B, Horacek, J, Howard, J, Howell, D, Dunai, D, Fishpool, G, Gibson, K, Harrison, J, Highcock, E, Huang, B, Inomoto, M, Imazawa, R, Jones, O, Kadowaki, K, Kaye, S, Keeling, D, Kocan, M, Kogan, L, Komm, M, Lai, W, Leddy, J, Leggate, H, Imada, K, Klimek, I, Hollocombe, J, Lipschultz, B, Lisgo, S, Liu, YQ, Lloyd, B, Lomanowski, B, Lukin, V, Maddison, G, Madsen, J, Mailloux, J, Martin, R, McArdle, G, Lupelli, I, McClements, K, McMillan, B, Meakins, A, Meyer, H, Michael, C, Militello, F, Milnes, J, Motojima, G, Muir, D, Naylor, G, Nielsen, A, O'Brien, M, O'Mullane, M, Olsen, J, Omotani, J, Ono, Y, Pamela, S, Morris, AW, O'Gorman, T, Pangione, L, Parra, F, Patel, A, Peebles, W, Perez, R, Pinches, S, Piron, L, Price, M, Reinke, M, Ricci, P, Riva, F, Roach, C, Romanelli, M, Ryan, D, Saarelma, S, Saveliev, A, Scannell, R, Schekochihin, A, Sharapov, S, Sharples, R, Shevchenko, V, Shinohara, K, Silburn, S, Simpson, J, Stanier, A, Storrs, J, Summers, H, Takase, Y, Tamain, P, Tanabe, H, Tanaka, H, Tani, K, Taylor, D, Thomas, D, Thomas-Davies, N, Thornton, A, Turnyanskiy, M, Valovic, M, Vann, R, Van Wyk, F, Walkden, N, Watanabe, T, Wilson, H, Wischmeier, M, Yamada, T, Young, J, Zoletnik, S, Team, the MAST, Team, the EUROfusion MST1
New results from MAST are presented that focus on validating models in order to extrapolate to future devices. Measurements during start-up experiments have shown how the bulk ion temperature rise scales with the square of the reconnecting field. Dur
Externí odkaz:
http://arxiv.org/abs/1611.06047
Autor:
Davies, N. R., Rahn, M. C., Walker, H. C., Ewings, R. A., Woodruff, D. N., Clarke, S. J., Boothroyd, A. T.
Publikováno v:
Phys. Rev. B 94, 144503 (2016)
We have performed inelastic neutron scattering measurements on a powder sample of the superconductor lithium iron selenide hydroxide Li$_{1-x}$Fe$_{x}$ODFe$_{1-y}$Se ($x \simeq 0.16, y \simeq 0.02$, $T_{\rm c} = 41$\,K). The spectrum shows an enhance
Externí odkaz:
http://arxiv.org/abs/1607.05588
Autor:
Davies, N. R., Johnson, R. D., Princep, A. J., Gannon, L. A., Ma, J. -Z., Qian, T., Richard, P., Li, H., Nowell, H., Baker, P. J., Shi, Y. G., Ding, H., Luo, J., Guo, Y. F., Boothroyd, A. T.
Publikováno v:
Phys. Rev. B 94, 104515 (2016)
We report single crystal X-ray diffraction measurements on Na$_2$Ti$_{2}Pn_{2}$O ($Pn$ = As, Sb) which reveal a charge superstructure that appears below the density wave transitions previously observed in bulk data. From symmetry-constrained structur
Externí odkaz:
http://arxiv.org/abs/1604.07284
Autor:
Watson, M. D., Kim, T. K., Haghighirad, A. A., Blake, S. F., Davies, N. R., Hoesch, M., Wolf, T., Coldea, A. I.
Publikováno v:
Phys. Rev. B 92, 121108 (2015)
We report a high-resolution angle-resolved photo-emission spectroscopy study of the evolution of the electronic structure of FeSe1-xSx single crystals. Isovalent S substitution onto the Se site constitutes a chemical pressure which subtly modifies th
Externí odkaz:
http://arxiv.org/abs/1508.05016
Autor:
Watson, M. D., Kim, T. K., Haghighirad, A. A., Davies, N. R., McCollam, A., Narayanan, A., Blake, S. F., Chen, Y. L., Ghannadzadeh, S., Schofield, A. J., Hoesch, M., Meingast, C., Wolf, T., Coldea, A. I.
Publikováno v:
Phys. Rev. B 91, 155106 (2015)
We present a comprehensive study of the evolution of the nematic electronic structure of FeSe using high resolution angle-resolved photoemission spectroscopy (ARPES), quantum oscillations in the normal state and elastoresistance measurements. Our hig
Externí odkaz:
http://arxiv.org/abs/1502.02917
Publikováno v:
J.Math.Phys.44:3640-3656,2003
We examine the low-energy dynamics of four-dimensional supersymmetric gauge theories and calculate the values of the gluino condensate for all simple gauge groups. By initially compactifying the theory on a cylinder we are able to perform calculation
Externí odkaz:
http://arxiv.org/abs/hep-th/0006011
Autor:
Davies, N. Michael, Khoze, Valentin V.
Publikováno v:
JHEP 0001 (2000) 015
Certain exact results in supersymmetric gauge theories are generated by non-perturbative effects different from instantons. In supersymmetric QCD with N colours and Nf fundamental flavours we examine the Affleck-Dine-Seiberg (ADS) superpotential usin
Externí odkaz:
http://arxiv.org/abs/hep-th/9911112