Zobrazeno 1 - 10
of 172
pro vyhledávání: '"Strässle, Th."'
Autor:
White, J. S., Honda, T., Sibille, R., Gauthier, N., Dmitriev, V., Strässle, Th., Niedermayer, Ch., Kimura, T., Kenzelmann, M.
Publikováno v:
Phys. Rev. B 94, 024439 (2016)
At ambient pressure (P) and below 5.5 K, olivine-type Mn2GeO4 hosts a multiferroic (MF) phase where a multicomponent, i.e., multi-k magnetic order generates spontaneous ferromagnetism and ferroelectricity (FE) along the c axis. Under high P the FE di
Externí odkaz:
http://arxiv.org/abs/1608.00823
Publikováno v:
Phys. Rev. B 90, 144434 (2014)
Inelastic neutron scattering experiments were performed to study manganese(II) dimer excitations in the diluted one-, two-, and three-dimensional compounds CsMn(x)Mg(1-x)Br(3), K(2)Mn(x)Zn(1-x)F(4), and KMn(x)Zn(1-x)F(3) (x<0.10), respectively. The t
Externí odkaz:
http://arxiv.org/abs/1410.6617
Autor:
Zayed, M. E., Rüegg, Ch., Strässle, Th., Roessli, U. Stuhr B., Ay, M., Mesot, J., Link, P., Pomjakushina, E., Stingaciu, M., Conder, K., Rønnow, H. M.
Publikováno v:
Phys. Rev. Lett. 113, 067201 (2014)
The temperature dependence of the gapped triplet excitations (triplons) in the 2D Shastry-Sutherland quantum magnet SrCu$_2$(BO$_3$)$_2$ is studied by means of inelastic neutron scattering. The excitation amplitude rapidly decreases as a function of
Externí odkaz:
http://arxiv.org/abs/1408.3135
Publikováno v:
Phys. Rev. B 89, 144402 (2014)
Defects intentionally introduced into magnetic materials often have a profound effect on the physical properties. Specifically tailored neutron spectroscopic experiments can provide detailed information on both the local exchange interactions and the
Externí odkaz:
http://arxiv.org/abs/1406.0602
Autor:
Ummethum, J., Nehrkorn, J., Mukherjee, S., Ivanov, N. B., Stuiber, S., Strässle, Th., Tregenna-Pigott, P. L. W., Mutka, H., Christou, G., Waldmann, O., Schnack, J.
Publikováno v:
Phys. Rev. B 86 (2012) 104403
The low-temperature elementary spin excitations in the AFM molecular wheel Fe18 were studied experimentally by inelastic neutron scattering and theoretically by modern numerical methods, such as dynamical density matrix renormalization group or quant
Externí odkaz:
http://arxiv.org/abs/1206.6203
Autor:
Bendele, M., Ichsanow, A., Pashkevich, Yu., Keller, L., Strässle, Th., Gusev, A., Pomjakushina, E., Conder, K., Khasanov, R., Keller, H.
Publikováno v:
Phys. Rev. B 85, 064517 (2012)
An extended investigation of the electronic phase diagram of FeSe$_{1-x}$ up to pressures of $p\simeq2.4$\,GPa by means of ac and dc magnetization, zero field muon spin rotation (ZF $\mu$SR), and neutron diffraction is presented. ZF $\mu$SR indicates
Externí odkaz:
http://arxiv.org/abs/1112.2602
Autor:
Furrer, A., Strässle, Th., Embs, J. P., Juranyi, F., Pomjakushin, V., Schneider, M., Krämer, K. W.
Publikováno v:
Phys, Rev. Lett. 107, 115502 (2011)
We introduce a novel method for local structure determination with a spatial resolution of the order of 0.01 Angstroem. It can be applied to materials containing clusters of exchange-coupled magnetic atoms. We use neutron spectroscopy to probe the en
Externí odkaz:
http://arxiv.org/abs/1109.1965
Publikováno v:
Phys. Rev. B 83, 024404 (2011)
Anisotropy effects can significantly control or modify the ground-state properties of magnetic systems. Yet the origin and the relative importance of the possible anisotropy terms is difficult to assess experimentally and often ambiguous. Here we pro
Externí odkaz:
http://arxiv.org/abs/1106.0615
Publikováno v:
Phys. Rev. B 83, 174442 (2011)
Inelastic neutron scattering was employed to study the magnetic excitations of Mn3+ dimers in LaMn0.1Ga0.9O3. The nearest-neighbor interaction of Mn3+ ions is ferromagnetic in the basal (a,b)-plane, but antiferromagnetic along the c-direction, thus t
Externí odkaz:
http://arxiv.org/abs/1106.0161
Publikováno v:
Phys. Rev. B 83, 094117 (2011)
We use electron momentum density in ice as a tool to quantify order-disorder transitions by comparing Compton profiles differences of ice VI, VII, VIII and XII with respect to ice Ih. Quantitative agreement is found between theory and experiment for
Externí odkaz:
http://arxiv.org/abs/1101.2212