Zobrazeno 1 - 10
of 219
pro vyhledávání: '"Vorderwisch, P."'
SIKA, a high-flux cold-neutron triple-axis spectrometer at the OPAL reactor at the Australian Nuclear Science and Technology Organization, is equipped with a 13-blade analyser and position-sensitive detector. This multiplexing design endows SIKA high
Externí odkaz:
http://arxiv.org/abs/1901.02089
Autor:
Stone, M. B., Broholm, C., Reich, D. H., Schiffer, P., Tchernyshyov, O., Vorderwisch, P., Harrison, N.
We report magnetic susceptibility, specific heat, and neutron scattering measurements as a function of applied magnetic field and temperature to characterize the $S=1/2$ quasi-two-dimensional frustrated magnet piperazinium hexachlorodicuprate (PHCC).
Externí odkaz:
http://arxiv.org/abs/cond-mat/0611463
An inelastic neutron scattering study of the lattice dynamics of the martensite phase of the ferromagnetic shape memory alloy, Ni2MnGa, reveals the presence of well-defined phasons associated with the charge density wave (CDW) resulting from Fermi su
Externí odkaz:
http://arxiv.org/abs/cond-mat/0608729
Autor:
Lake, B., Lefmann, K., Christensen, N. B., Aeppli, G., McMorrow, D. F., Ronnow, H. M., Vorderwisch, P., Smeibidl, P., Mangkorntong, N., Sasagawa, T., Nohara, M., Takagi, H.
Publikováno v:
Nature Materials 4, 658-662 (2005)
Many physical properties of high-temperature (high-Tc) superconductors are two-dimensional phenomena derived from their square planar CuO2 building blocks. This is especially true of the magnetism from the copper ions. As mobile charge carriers enter
Externí odkaz:
http://arxiv.org/abs/cond-mat/0605164
Exchange interactions between $S=\frac{1}{2}$ sites in piperazinium hexachlorodicuprate produce a frustrated bilayer magnet with a singlet ground state. We have determined the field-temperature phase diagram by high field magnetization and neutron sc
Externí odkaz:
http://arxiv.org/abs/cond-mat/0503450
Autor:
Hagiwara, M., Regnault, L. P., Zheludev, A., Stunault, A., Metoki, N., Suzuki, T., Suga, S., Kakurai, K., Koike, Y., Vorderwisch, P., Chung, J. H.
Inelastic neutron scattering experiments on the S=1 quasi-one-dimensional bond-alternating antiferromagnet Ni(C9D24N4)(NO2)ClO4 have been performed under magnetic fields below and above a critical field Hc at which the energy gap closes. Normal field
Externí odkaz:
http://arxiv.org/abs/cond-mat/0501207
Autor:
Khaykovich, B., Wakimoto, S., Birgeneau, R. J., Kastner, M. A., Lee, Y. S., Smeibidl, P., Vorderwisch, P., Yamada, K.
Publikováno v:
Phys Rev B 71, 220508 (2005)
We report the observation of a magnetic-field-induced transition between magnetically disordered and ordered phases in slightly under-doped La(2-x)SrxCuO4 with x=0.144. Static incommensurate spin-density-wave order is induced above a critical field o
Externí odkaz:
http://arxiv.org/abs/cond-mat/0411355
Autor:
Stock, C., Wakimoto, S., Birgeneau, R. J., Danilkin, S., Klenke, J., Smeibidl, P., Vorderwisch, P.
We present elastic neutron scattering results at high magnetic fields for Mg-doped CuGeO$_{3}$. For low magnesium concentrations, where a spin-Peierls phase is present, we find an enhancement of the long range antiferromagnetic order in the structura
Externí odkaz:
http://arxiv.org/abs/cond-mat/0407772
Autor:
Zheludev, A., Shapiro, S. M., Honda, Z., Katsumata, K., Grenier, B., Ressouche, E., Regnault, L. -P., Chen, Y., Vorderwisch, P., Mikeska, H. -J., Kolezhuk, A. K.
We report the results of elastic and inelastic neutron scattering experiments on the Haldane gap quantum antiferromagnet Ni(C5D14N2)2N3(PF6) performed at mK temperatures in a wide range of magnetic field applied parallel to the S = 1 spin chains. Eve
Externí odkaz:
http://arxiv.org/abs/cond-mat/0308545
Autor:
Khaykovich, B., Birgeneau, R. J., Chou, F. C., Erwin, R. W., Kastner, M. A., Lee, S. -H., Lee, Y. S., Smeibidl, P., Vorderwisch, P., Wakimoto, S.
Publikováno v:
Phys. Rev. B 67, 054501 (2003)
We have measured the enhancement of the static incommensurate spin-density wave (SDW) order by an applied magnetic field in stage-4 and stage-6 samples of superconducting La2CuO(4+y). We show that the stage-6 La2CuO(4+y) (Tc=32 K) forms static long-r
Externí odkaz:
http://arxiv.org/abs/cond-mat/0209648