Zobrazeno 1 - 10
of 889
pro vyhledávání: '"Walker, H C"'
Autor:
Andriushin, N. D., Grumbach, J., Kulbakov, A. A., Tymoshenko, Y. V., Onykiienko, Y. A., Firouzmandi, R., Cheng, E., Granovsky, S., Skourski, Y., Ollivier, J., Walker, H. C., Kocsis, V., Buchner, B., Keimer, B., Doerr, M., Inosov, D. S., Peets, D. C.
Centrosymmetric compounds which host three-dimensional topological spin structures comprise a distinct subclass of materials in which multiple-$\mathbf{q}$ magnetic order is stabilized by anisotropy and bond frustration in contrast to the more common
Externí odkaz:
http://arxiv.org/abs/2409.10214
Autor:
Tripathi, Rajesh, Adroja, D. T., Ritter, C., Sharma, Shivani, Yang, Chongli, Hillier, A. D., Koza, M. M., Demmel, F., Sundaresan, A., Langridge, S., Higemoto, Wataru, Ito, Takashi U., Strydom, A. M., Stenning, G. B. G., Bhattacharyya, A., Keen, David, Walker, H. C., Perry, R. S., Pratt, Francis, Si, Qimiao, Takabatake, T.
Publikováno v:
Physical Review B 106, 064436 (2022)
We present the results of muon spin relaxation ($\mu$SR) and neutron scattering on the Ce-based quasikagome lattice CeRh$_{1-x}$Pd$_{x}$Sn ($x=0.1$ to 0.75). Our ZF-$\mu$SR results reveal the absence of static long-range magnetic order down to 0.05~K
Externí odkaz:
http://arxiv.org/abs/2208.03148
Autor:
Sukhanov, A. S., Tymoshenko, Y. V., Kulbakov, A. A., Cameron, A. S., Kocsis, V., Walker, H. C., Ivanov, A., Park, J. T., Pomjakushin, V., Nikitin, S. E., Morozov, I. V., Chernyavskii, I. O., Aswartham, S., Wolter, A. U. B., Yaresko, A., Büchner, B., Inosov, D. S.
Publikováno v:
Phys. Rev. B 105, 134424 (2022)
The metallic compound FeP belongs to the class of materials that feature a complex noncollinear spin order driven by magnetic frustration. While its double-helix magnetic structure with a period $\lambda_{\text{s}} \approx 5c$, where $c$ is the latti
Externí odkaz:
http://arxiv.org/abs/2201.10358
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:
Mustonen, O., Mutch, H., Walker, H. C., Baker, P. J., Coomer, F. C., Perry, R. S., Pughe, C., Stenning, G. B. G., Liu, C., Dutton, S. E., Cussen, E. J.
Publikováno v:
npj Quantum Mater. 7, 74 (2022)
$B$-site ordered 4$d^1$ and 5$d^1$ double perovskites have a number of potential novel ground states including multipolar order, quantum spin liquids and valence bond glass states. These arise from the complex interactions of spin-orbital entangled $
Externí odkaz:
http://arxiv.org/abs/2108.02209
Autor:
Guratinder, K., Schmidt, M., Walker, H. C., Bewley, R., Wörle, M., Cabra, D., Osorio, S. A., Villalba, M., Madsen, A. K., Keller, L., Wildes, A., Puphal, P., Cervellino, A., Rüegg, Ch., Zaharko, O.
The crystal structure and magnetic correlations in triangular antiferromagnet FeGa$_2$S$_4$ are studied by x-ray diffraction, magnetic susceptibility, neutron diffraction and neutron inelastic scattering. We report significant mixing at the cation si
Externí odkaz:
http://arxiv.org/abs/2107.06904
Autor:
Tripathi, Rajesh, Adroja, D. T., Lees, M. R., Sundaresa, A., Langridge, S., Bhattacharyya, A., Anand, V. K., Khalyavin, D., Sannigrahi, J., Cibin, G., Hillier, A. D., Smith, R. I., Walker, H. C., Muro, Y., Takabatake, T.
We report a systematic study of the $5d$-electron-doped system Ce(Fe$_{1-x}$Ir$_x$)$_2$Al$_{10}$ ($0 \leq x \leq 0.15$). With increasing $x$, the orthorhombic $b$~axis decreases slightly while accompanying changes in $a$ and $c$ leave the unit cell v
Externí odkaz:
http://arxiv.org/abs/2106.02710
Autor:
Shu, J. W., Adroja, D. T., Hillier, A. D., Zhang, Y. J., Chen, Y. X., Shen, B., Orlandi, F., Walker, H. C., Liu, Y., Cao, C., Steglich, F., Yuan, H. Q., Smidman, M.
Publikováno v:
Phys. Rev. B 104, L140411 (2021)
CeRh$_6$Ge$_4$ is an unusual example of a stoichiometric heavy fermion ferromagnet, which can be cleanly tuned by hydrostatic pressure to a quantum critical point. In order to understand the origin of this anomalous behavior, we have characterized th
Externí odkaz:
http://arxiv.org/abs/2102.12788
Autor:
Songvilay, M., Petit, S., Damay, F., Roux, G., Qureshi, N., Walker, H. C., Rodriguez-Rivera, J. A., Gao, B., Cheong, S. -W., Stock, C.
Publikováno v:
Phys. Rev. Lett. 126, 017201 (2021)
We apply neutron spectroscopy to measure the magnetic dynamics in the S=3/2 magnet $\beta$-CaCr$_2$O$_4$ (T$_N$=21 K). The low-energy fluctuations, in the ordered state, resemble large-S linear spin-waves from the incommensurate ground state. However
Externí odkaz:
http://arxiv.org/abs/2012.06314
Autor:
Sukhanov, A. S., Nikitin, S. E., Pavlovskii, M. S., Sterling, T. C., Andryushin, N. D., Cameron, A. S., Tymoshenko, Y. V., Walker, H. C., Morozov, I. V., Chernyavskii, I. O., Aswartham, S., Reznik, D., Inosov, D. S.
Publikováno v:
Phys. Rev. Research 2, 043405 (2020)
We present a comprehensive investigation of lattice dynamics in the double-helix antiferromagnet FeP by means of high-resolution time-of-flight neutron spectroscopy and ab-initio calculations. Phonons can hybridize with the magnetic excitations in no
Externí odkaz:
http://arxiv.org/abs/2009.07267