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Publikováno v:
In Schizophrenia Research February 2021 228:336-343
Publikováno v:
Phys. Rev. B 74 (2006) 024413(1-6).
We have investigated the structural, magnetic, thermodynamic, and dielectric properties of polycrystalline CoCr$_2$O$_4$, an insulating spinel exhibiting both ferrimagnetic and spiral magnetic structures. Below $T_c$ = 94 K the sample develops long-r
Externí odkaz:
http://arxiv.org/abs/cond-mat/0603307
Autor:
Heitmann, T. W., Bu, S. D., Kim, D. M., Choi, J. H., Giencke, J., Eom, C. B., Regan, K. A., Rogado, N., Hayward, M. A., He, T., Slusky, J. S., Khalifah, P., Haas, M., Cava, R. J., Larbalestier, D. C, Rzchowski, M. S.
We report scanning tunneling spectroscopy (STS) measurements of the gap properties of both ceramic MgB2 and c-axis oriented epitaxial MgB2 thin films. Both show a temperature dependent zero bias conductance peak and evidence for two superconducting g
Externí odkaz:
http://arxiv.org/abs/cond-mat/0212194
Autor:
Hayward, M. A., Cussen, E. J., Claridge, J. B., Bieringer, M., Rosseinsky, M. J., Kiely, C. J., Blundell, S. J., Marshall, I. M., Pratt, F. L.
Publikováno v:
Science, vol 295, 1882 (2002)
We present the synthesis and structural characterisation of a transition metal oxide hydride, LaSrCoO_3H_{0.7}, which adopts an unprecedented structure in which oxide chains are bridged by hydride anions to form a two- dimensional extended network. T
Externí odkaz:
http://arxiv.org/abs/cond-mat/0207660
Electron diffraction and high resolution microscopy have been performed on Mg1-xAlxB2 with x~0.5. This composition displays a superstructure with a repeat period of exactly 2c along the c axis and about 10 nm in the a-b plane. The superstructure resu
Externí odkaz:
http://arxiv.org/abs/cond-mat/0109301
Autor:
Rogado, N., Hayward, M. A., Regan, K. A., Wang, Yayu, Ong, N. P., Rowell, John M., Cava, R. J.
We report the fabrication of MgB2 with bulk superconducting properties by conventional solid state methods at temperatures as low as 550 C. Mg deficiencies of the type Mg1-xB2 were tested. Tc was found to decrease by about 1K at large x, though the a
Externí odkaz:
http://arxiv.org/abs/cond-mat/0107534
Autor:
Bordet, P., Mezouar, M., Nunez-Regueiro, M., Monteverde, M., Nunez-Regueiro, M. D., Rogado, N., Regan, K. A., Hayward, M. A., He, T., Loureiro, S. M., Cava, R. J.
We report measurements on MgB2 up to ~40GPa. Increasing pressure yields a monotonous decrease of the lattice parameters and of the c/a ratio, but no structural transition down to parameters smaller than those of AlB2. The transition superconducting t
Externí odkaz:
http://arxiv.org/abs/cond-mat/0106585
We report (13)C NMR characterization of the new superconductor MgCNi_3 (He et al., Nature (411), 54 (2001)). We found that both the uniform spin susceptibility and the spin fluctuations show a strong enhancement with decreasing temperature, and satur
Externí odkaz:
http://arxiv.org/abs/cond-mat/0106476
Autor:
Huang, Q., He, T., Regan, K. A., Rogado, N., Hayward, M., Haas, M. K., Inumaru, K., Cava, R. J.
We report the structural parameters of superconducting MgCxNi3 (x=0.96, TC=7.3 K) as a function of temperature, from 2 K to 295 K, determined by neutron powder diffraction profile refinement. The compound has the perovskite structure over the whole t
Externí odkaz:
http://arxiv.org/abs/cond-mat/0105240