Zobrazeno 1 - 10
of 114
pro vyhledávání: '"Voneshen, D."'
Autor:
Samartzis, A., Chillal, S., Jeschke, H. O., Voneshen, D. J., Lu, Z., Islam, A. T. M. N., Lake, B.
Publikováno v:
Physical Review B 107, 184435 (2023)
The magnetic excitation spectrum and Hamiltonian of the quantum magnet BaCuTe2O6 is studied by inelastic neutron scattering (INS) and density functional theory (DFT). INS on powder and single crystal samples reveals overlapping spinon continuua - the
Externí odkaz:
http://arxiv.org/abs/2305.03825
Autor:
Bera, A. K., Yusuf, S. M., Saha, S. K., Kumar, M., Voneshen, D., Skourski, Y., Zvyagin, S. A.
Publikováno v:
Nature Communications 13, 6888 (2022)
Understanding exotic forms of magnetism in quantum spin systems is an emergent topic of modern condensed matter physics. Quantum dynamics can be described by particle-like carriers of information, known-as quasiparticles that appear from the collecti
Externí odkaz:
http://arxiv.org/abs/2210.11765
Autor:
Weber, T., Fobes, D. M., Waizner, J., Steffens, P., Tucker, G. S., Böhm, M., Beddrich, L., Franz, C., Gabold, H., Bewley, R., Voneshen, D., Skoulatos, M., Georgii, R., Ehlers, G., Bauer, A., Pfleiderer, C., Böni, P., Janoschek, M., Garst, M.
Publikováno v:
Science 375, 1025 (2022)
The motion of a spin excitation across topologically non-trivial magnetic order exhibits a deflection that is analogous to the effect of the Lorentz force on an electrically charged particle in an orbital magnetic field. We used polarized inelastic n
Externí odkaz:
http://arxiv.org/abs/2203.08159
Publikováno v:
Nature Physics 19, 99 (2023)
Theories of the origin of superconductivity in cuprates are dependent on an understanding of their normal state which exhibits various competing orders. Transport and thermodynamic measurements on La$_{2-x}$Sr$_x$CuO$_4$ show signatures of a quantum
Externí odkaz:
http://arxiv.org/abs/2201.11719
Autor:
Lane, H., Rodriguez, E. E., Walker, H. C., Niedermayer, Ch., Stuhr, U., Bewley, R. I., Voneshen, D. J., Green, M. A., Rodriguez-Rivera, J. A., Fouquet, P., Cheong, S. -W., Attfield, J. P., Ewings, R. A., Stock, C.
Publikováno v:
Phys. Rev. B 104, 104404 (2021)
CaFe$_{2}$O$_{4}$ is an $S=5/2$ antiferromagnet exhibiting two magnetic orders which shows regions of coexistence at some temperatures. Using a Green's function formalism, we model neutron scattering data of the spin wave excitations in this material
Externí odkaz:
http://arxiv.org/abs/2108.09679
Autor:
Nikitin, S. E., Podlesnyak, A., Xu, J., Voneshen, D., Le, M. Duc, Bud'ko, S. L., Canfield, P. C., Sokolov, D. A.
Publikováno v:
Phys. Rev. B 104, 115169 (2021)
A significant number of Kondo-lattice ferromagnets order perpendicular to the easy magnetization axis dictated by the crystalline electric field. The nature of this phenomenon has attracted considerable attention, but remains poorly understood. In th
Externí odkaz:
http://arxiv.org/abs/2103.15137
Autor:
Samartzis, A., Khalyavin, D., Islam, A. T. M. N., Chillal, S., Siemensmeyer, K., Prokes, K., Voneshen, D. J., Senyshyn, A., Lake, B.
Publikováno v:
Phys. Rev. B 103, 094417 (2021)
We investigate the structural and magnetic properties of the new quantum magnet BaCuTe$_2$O$_6$. This compound is synthesized for the first time in powder and single crystal form. Synchrotron X-ray and neutron diffraction reveal a cubic crystal struc
Externí odkaz:
http://arxiv.org/abs/2102.07490
Autor:
Inosov, D. S., Onykiienko, Y. O., Tymoshenko, Y. V., Akopyan, A., Shukla, D., Prasai, N., Doerr, M., Gorbunov, D., Zherlitsyn, S., Voneshen, D. J., Boehm, M., Tsurkan, V., Felea, V., Loidl, A., Cohn, J. L.
Publikováno v:
Phys. Rev. B 102, 184431 (2020)
Anisotropic low-temperature properties of the cubic spinel helimagnet ZnCr2Se4 in the single-domain spin-spiral state are investigated by a combination of neutron scattering, thermal conductivity, ultrasound velocity, and dilatometry measurements. In
Externí odkaz:
http://arxiv.org/abs/2009.13424
Autor:
Venkat, G., Cox, C. D. W., Voneshen, D., Caruana, A. J., Piovano, A., Cropper, M. D., Morrison, K.
Publikováno v:
Phys. Rev. Materials 4, 075402 (2020)
The determination of the magnon diffusion length (MDL) is important for increasing the efficiency of spin Seebeck effect (SSE) based devices utilising non-metallic magnets. We extract the MDL at $50$ and $300\,\rm{K}$ in an $\rm{Fe}_{3}\rm{O}_{4}$ si
Externí odkaz:
http://arxiv.org/abs/2001.03738
Autor:
Allenspach, S., Biffin, A., Stuhr, U., Tucker, G. S., Ohira-Kawamura, S., Kofu, M., Voneshen, D. J., Boehm, M., Normand, B., Laflorencie, N., Mila, F., Rüegg, Ch.
Publikováno v:
Phys. Rev. Lett. 124, 177205 (2020)
The dimerized quantum magnet BaCuSi$_2$O$_6$ was proposed as an example of "dimensional reduction" arising near the magnetic-field-induced quantum critical point (QCP) due to perfect geometrical frustration of its inter-bilayer interactions. We demon
Externí odkaz:
http://arxiv.org/abs/1911.04161