Zobrazeno 1 - 10
of 77
pro vyhledávání: '"Ghannadzadeh, S."'
Autor:
Curley, S. P. M., Huddart, B. M., Kamenskyi, D., Coak, M. J., Williams, R. C., Ghannadzadeh, S., Schneider, A., Okubo, S., Sakurai, T., Tidey, J. P., Graf, D., Clark, S. J., Blundell, S. J., Pratt, F. L., Telling, M. T. F., Lancaster, T., Manson, J. L., Goddard, P. A.
We present here a study of the magnetic properties of the antiferromagnetic dimer material CuVOF$_4$(H$_2$O)$_6\cdot$H$_2$O, in which the dimer unit is composed of two different $S = 1/2$ species, Cu(II) and V(IV). An applied magnetic field of $\mu_0
Externí odkaz:
http://arxiv.org/abs/2109.01529
Publikováno v:
SciPost Phys. 5, 056 (2018)
The electronic structure of heavy-fermion materials is highly renormalised at low temperatures with localised moments contributing to the electronic excitation spectrum via the Kondo effect. Thus, heavy-fermion materials are very susceptible to Lifsh
Externí odkaz:
http://arxiv.org/abs/1808.09756
Autor:
Pfau, H., Daou, R., Friedemann, S., Karbassi, S., Ghannadzadeh, S., Kuechler, R., Hamann, S., Steppke, A., Sun, D., Koenig, M., Mackenzie, A. P., Kliemt, K., Krellner, C., Brando, M.
Publikováno v:
Phys. Rev. Lett. 119, 126402 (2017)
A ferromagnetic quantum critical point is thought not to exist in two and three-dimensional metallic systems yet is realized in the Kondo lattice compound YbNi4(P,As)2, possibly due to its one-dimensionality. It is crucial to investigate the dimensio
Externí odkaz:
http://arxiv.org/abs/1612.06273
Autor:
Ramshaw, B. J., Harrison, N., Sebastian, S. E., Ghannadzadeh, S., Modic, K. A., Bonn, D. A., Hardy, W. N., Liang, Ruixing, Goddard, P. A.
Broken fourfold rotational (C$_4$) symmetry is observed in the experimental properties of several classes of unconventional superconductors. It has been proposed that this symmetry breaking is important for superconducting pairing in these materials,
Externí odkaz:
http://arxiv.org/abs/1607.07145
Autor:
Foronda, F. R., Ghannadzadeh, S., Sedlmaier, S. J., Wright, J. D., Burns, K., Cassidy, S. J., Goddard, P. A., Lancaster, T., Clarke, S. J., Blundell, S. J.
Publikováno v:
Phys. Rev. B 92, 134517 (2015)
The superconducting properties of a recently discovered high $T_{\rm c}$ superconductor, Sr/ammonia-intercalated FeSe, have been measured using pulsed magnetic fields down to $4.\,\rm {K}$ and muon spin spectroscopy down to $1.5\,\rm K$. This compoun
Externí odkaz:
http://arxiv.org/abs/1510.01919
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
Autor:
Liu, J., Goddard, P. A., Singleton, J., Brambleby, J., Foronda, F., Möller, J. S., Kohama, Y., Ghannadzadeh, S., Ardavan, A., Blundell, S. J., Lancaster, T., Xiao, F., Williams, R. C., Pratt, F. L., Baker, P. J., Wierschem, K., Lapidus, S. H., Stone, K. H., Stephens, P. W., Bendix, J., Lees, M. R., Woods, T. J., Carreiro, K. E., Tran, H. E., Villa, C. J., Manson, J. L.
The crystal structures of Ni$X_2$(pyz)$_2$ ($X$ = Cl (\textbf{1}), Br (\textbf{2}), I (\textbf{3}) and NCS (\textbf{4})) were determined at 298~K by synchrotron X-ray powder diffraction. All four compounds consist of two-dimensional (2D) square array
Externí odkaz:
http://arxiv.org/abs/1410.3077
Autor:
Ghannadzadeh, S., Wright, J. D., Foronda, F. R., Blundell, S. J., Clarke, S. J., Goddard, P. A.
Publikováno v:
Phys. Rev. B 89, 054502 (2014)
The upper critical field of NaFe$_{1-x}$Co$_x$As was measured from $x=0$ to $x=0.08$, with the magnetic field applied parallel ($H_{\rm c2}^\parallel$) and normal ($H_{\rm c2}^\perp$) to the planes. The data were fitted using one-band and two-band mo
Externí odkaz:
http://arxiv.org/abs/1312.3171
Autor:
Lancaster, T., Goddard, P. A., Blundell, S. J., Foronda, F. R., Ghannadzadeh, S., Möller, J. S., Baker, P. J., Pratt, F. L., Baines, C., Huang, L., Wosnitza, J., McDonald, R. D., Modic, K. A., Singleton, J., Topping, C. V., Beale, T. A. W., Xiao, F., Schlueter, J. A., Cabrera, R. D., Carreiro, K. E., Tran, H. E., Manson, J. L.
We investigate the structural and magnetic properties of two molecule-based magnets synthesized from the same starting components. Their different structural motifs promote contrasting exchange pathways and consequently lead to markedly different mag
Externí odkaz:
http://arxiv.org/abs/1311.7614
Autor:
Ghannadzadeh, S., Möller, J. S., Goddard, P. A., Lancaster, T., Xiao, F., Blundell, S. J., Maisuradze, A., Khasanov, R., Manson, J. L., Tozer, S. W., Graf, D., Schlueter, J. A.
Publikováno v:
Phys. Rev. B 87, 241102(R) (2013)
We present the results of high-field magnetization and muon-spin relaxation measurements on the coordination polymer CuF_2(H_2O)_2(pyrazine) in pressures up to 22.5 kbar. We observe a transition from a quasi-two-dimensional to a quasi-one-dimensional
Externí odkaz:
http://arxiv.org/abs/1304.5403