Zobrazeno 1 - 10
of 151
pro vyhledávání: '"Milne, C. J."'
Autor:
Makita, M., Vartiainen, I., Mohacs, I., Caleman, C., Diaz, A., Jönsson, H. O., Juranić, P., Medvedev, N., Meents, A., Mozzanica, A., Opara, N., Padeste, C., Panneels, V., Saxena, V., Sikorski, M., Song, S., Vera, L., Willmott, P. R., Beaud, P., Milne, C. J., Ziaja-Motyka, B., David, C.
The evolution of the bismuth crystal structure upon excitation of its A$_{1g}$ phonon has been intensely studied with short pulse optical lasers. Here we present the first-time observation of a hard x-ray induced ultrafast phase transition in a bismu
Externí odkaz:
http://arxiv.org/abs/1807.06865
Autor:
Mansart, B., Cottet, M. J. G., Mancini, G. F., Jarlborg, T., Dugdale, S. B., Johnson, S. L., Mariager, S. O., Milne, C. J., Beaud, P., Grübel, S., Johnson, J. A., Kubacka, T., Ingold, G., Prsa, K., Rønnow, H. M., Conder, K., Pomjakushina, E., Chergui, M., Carbone, F.
Publikováno v:
Physical Review B 88, 054507 (2013)
The strength of the electron-phonon coupling parameter and its evolution throughout a solid's phase diagram often determines phenomena such as superconductivity, charge- and spin-density waves. Its experimental determination relies on the ability to
Externí odkaz:
http://arxiv.org/abs/1401.4072
Autor:
Caviezel, A., Mariager, S. O., Johnson, S. L., Möhr-Vorobeva, E., Huang, S. W., Ingold, G., Staub, U., Milne, C. J., Cheong, S. -W., Beaud, P.
We apply grazing-incidence femtosecond x-ray diffraction to investigate the details of the atomic motion connected with a displacively excited coherent optical phonon. We concentrate on the low frequency phonon associated with the charge and orbital
Externí odkaz:
http://arxiv.org/abs/1304.6900
We directly measure by femtosecond time-resolved x-ray diffraction the E$_g$ symmetry coherent phonon excited in bismuth by strong optical excitation. The magnitude of the E$_g$ mode observed is 0.2 pm peak-to-peak, compared against the 2.7 pm initia
Externí odkaz:
http://arxiv.org/abs/1212.2348
Autor:
Mariager, S. O., Pressacco, F., Ingold, G., Mancini, E., Caviezel, A., Möhr-Vorobeva, E., Beaud, P., Johnson, S. L., Milne, C. J., Moyerman, S., Fullerton, E., Feidenhans'l, R., Back, C. H., Quitmann, C.
Publikováno v:
Phys. Rev. Lett. 108, 087201 (2012)
We use time-resolved x-ray diffraction and magnetic optical Kerr effect to study the laser induced antiferromagnetic to ferromagnetic phase transition in FeRh. The structural response is given by the nucleation of independent ferromagnetic domains (\
Externí odkaz:
http://arxiv.org/abs/1111.6435
Autor:
Feyerherm, R., Dudzik, E., Valencia, S., Wolter, A. U. B., Milne, C. J., Landsgesell, S., Alber, D., Argyriou, D. N.
Publikováno v:
Phys. Rev. B 82 (2010) 024103
Synchrotron X-ray diffraction investigations of two single crystals of Na_xCoO_2 from different batches with composition x = 0.525-0.530 reveal homogeneous incommensurate sodium ordering with propagation vector (0.53 0.53 0) at room-temperature. The
Externí odkaz:
http://arxiv.org/abs/1004.4990
Publikováno v:
Phys. Rev. B 76, 134506 (2007)
We have utilized neutron powder diffraction to probe the crystal structure of layered Na$_{x}$CoO$_{2}$ near the half doping composition of $x=$0.46 over the temperature range of 2 to 600K. Our measurements show evidence of a dynamic transition in th
Externí odkaz:
http://arxiv.org/abs/0709.1038
Autor:
Argyriou, D. N., Milne, C. J., Aliouane, N., Radaelli, P. G., Chapon, L. C., Chemseddine, A., Veira, J., Cox, S., Mathur, N. D., Midgley, P. A.
We have used electron and neutron powder diffraction to elucidate the structural properties of superconducting \NaD. Our measurements show that our superconducting sample exhbits a number of supercells ranging from ${1/3}a^{*}$ to ${1/15}a^{*}$, but
Externí odkaz:
http://arxiv.org/abs/cond-mat/0403661
Revised superconducting phase diagram of hole doped Na$_{x}$(H$_{3}$O)$_{z}$CoO$_{2}\cdot y$H$_{2}$O
Autor:
Milne, C. J., Argyriou, D. N., Chemseddine, A., Aliouane, N., Veira, J., Landsgesell, S., Alber, D.
Publikováno v:
Phys. Rev. Lett. 93, 247007 (2004)
We have studied the superconducting phase diagram of \NaH\space as a function of electronic doping, characterizing our samples both in terms of Na content $x$ and the Co valence state. Our findings are consistent with a recent report that intercalati
Externí odkaz:
http://arxiv.org/abs/cond-mat/0401273