Zobrazeno 1 - 10
of 1 215
pro vyhledávání: '"Hur N"'
Autor:
Jin, Wentao, Chun, Sae Hwan, Kim, Jungho, Casa, Diego, Ruff, Jacob P. C., Won, C. J., Lee, K. D., Hur, N., Kim, Young-June
Publikováno v:
Phys. Rev. B 105, 054419 (2022)
By performing resonant inelastic x-ray scattering (RIXS) measurements at the Ir $\mathit{L_{\mathrm{3}}}$ edge, we have investigated the low-energy elementary excitations in a series of double perovskite iridate single crystals, La$_{2}$$\mathit{M}$I
Externí odkaz:
http://arxiv.org/abs/2202.04803
Autor:
Lee, J., Lee, H. J., Averitt, R. D., Trugman, S. A., Demsar, J., Funk, D. J., Hur, N. H., Moritomo, Y., Taylor, A. J., Prasankumar, R. P., Yarotski, D. A.
We have studied the sub-picosecond quasiparticle dynamics in the perovskite manganite La0.7Ca0.3MnO3 and the layered manganite La1.4Sr1.6Mn2O7 using ultrafast optical spectroscopy. We found that for T > TC, initial relaxation proceeds on the time sca
Externí odkaz:
http://arxiv.org/abs/1609.09155
Autor:
Jeong, I. -K., Hur, N.
To unravel the origin of the dielectric anomaly at the antiferromagnetic ordering of magnetoelectric Bi$_2$Fe$_4$O$_9$ we performed neutron powder diffraction measurements across the N$\acute{\rm e}$el temperature, $T_{\rm N}$. Both local structures
Externí odkaz:
http://arxiv.org/abs/1605.03681
Autor:
Bowlan, P., Trugman, S. A., Bowlan, J., Zhu, J. -X., Hur, N. J., Taylor, A. J., Yarotski, D. A., Prasankumar, R. P.
Publikováno v:
Phys. Rev. B 94, 100404 (2016)
We demonstrate a new approach for directly measuring the ultrafast energy transfer between elec- trons and magnons, enabling us to track spin dynamics in an antiferromagnet (AFM). In multiferroic HoMnO3, optical photoexcitation creates hot electrons,
Externí odkaz:
http://arxiv.org/abs/1602.03872
Autor:
van Duijn, J., Kim, K. H., Hur, N., Adroja, D. T., Bridges, F., Daoud-Aladine, A., Fernandez-Alonso, F., Ruiz-Bustos, R., Wen, J., Kearney, V., Huang, Q. Z., Cheong, S. -W., Nakatsuji, S., Broholm, C., Perring, T. G.
Publikováno v:
Phys. Rev. B 96, 094409 (2017)
The complex structure and magnetism of Pr$_{2-x}$Bi$_x$Ru$_2$O$_7$ was investigated by neutron scattering and EXAFS. Pr has an approximate doublet ground-state and the first excited state is a singlet. This overall crystal field level scheme is simil
Externí odkaz:
http://arxiv.org/abs/1407.0661
Autor:
Park, Joonbum, Kampert, E., Jin, Kyung-Hwan, Eom, Man Jin, Ok, Jongmok, Choi, E. S., Wolff-Fabris, F., Lee, K. D., Hur, N., Rhyee, J. -S, Jo, Y. J., Jhi, Seung-Hoon, Kim, Jun Sung
We present the Fermi-surface map of the spin-chiral bulk states for the non-centrosymmetric semiconductor BiTeI using de Haas-van Alphen and Shubnikov-de Haas oscillations. We identify two distinct Fermi surfaces with a unique spindle-torus-type topo
Externí odkaz:
http://arxiv.org/abs/1306.1747
We report on epitaxial growth of single-phase [Pb(Zr0.57Ti0.43)O3]0.8[Pb(Fe2/3W1/3)O3]0.2 (PZT-PFW) solid-solution thin films using pulsed laser deposition. X-ray diffraction measurements reveal that the films have a tetragonal structure. The films e
Externí odkaz:
http://arxiv.org/abs/1001.4973
Publikováno v:
Phys. Rev. B 81, 041405(R) (2010)
We report on angle resolved photoemission spectroscopic studies on a parent topological insulator (TI), Bi$_2$Se$_3$. The line width of the spectral function (inverse of the quasi-particle lifetime) of the topological metallic (TM) states shows an an
Externí odkaz:
http://arxiv.org/abs/0912.3883
Autor:
Talbayev, D., LaForge, A. D., Trugman, S. A., Hur, N., Taylor, A. J., Averitt, R. D., Basov, D. N.
We report a study of magnetic dynamics in multiferroic hexagonal manganite HoMnO3 by far-infrared spectroscopy. Low-temperature magnetic excitation spectrum of HoMnO3 consists of magnetic-dipole transitions of Ho ions within the crystal-field split J
Externí odkaz:
http://arxiv.org/abs/0811.0999
We present a unique example of giant magnetoelectric effect in a conventional multiferroic HoMnO3, where polarization is very large (~56 mC/m2) and the ferroelectric transition temperature is higher than the magnetic ordering temperature by an order.
Externí odkaz:
http://arxiv.org/abs/0805.3289