Zobrazeno 1 - 10
of 2 177
pro vyhledávání: '"Cheong, S-W."'
Autor:
Tyson, T. A., Amarasinghe, S., Abeykoon, AM M., Lalancette, R., Du, S. K., Fang, X., Cheong, S. -W., Al-Mahboob, A., Sadowski, J. T.
The surface magnetization of Fe$_3$GeTe$_2$ was examined by low-energy electron microscopy (LEEM) using an off-normal incidence electron beam. We found that the 180$^o$ domain walls are of Bloch type. Temperature-dependent LEEM measurements yield a s
Externí odkaz:
http://arxiv.org/abs/2409.03565
Autor:
Maluski, D., Langenbach, M., Szaller, D., Reschke, S., Prodan, L., Mayorga, I. Cámara, Cheong, S. -W., Tsurkan, V., Kézsmárki, I., Hemberger, J., Grüninger, M.
In NiTe$_3$O$_6$ with a chiral crystal structure, we report on a giant natural optical rotation of the lowest-energy magnon. This polarization rotation, as large as 140 deg/mm, corresponds to a path difference between right and left circular polariza
Externí odkaz:
http://arxiv.org/abs/2312.02733
Autor:
Li, Fei, Nie, Hao, Zhao, Yu, Zhao, Zhihe, Huo, Juntao, Shen, Hongxian, Jiang, Sida, Chen, Renjie, Yan, Aru, Cheong, S-W, Xia, Weixing, Zhang, Lunyong, Sun, Jianfei
Magnetic skyrmions offer promising prospects for constructing future energy-efficient and high-density information technology, leading to extensive explorations of new skyrmionic materials recently. The topological Hall effect has been widely adopted
Externí odkaz:
http://arxiv.org/abs/2310.13997
Autor:
Lee, A. C., Sarkar, S., Du, K., Kung, H. -H., Won, C. J., Wang, K., Cheong, S. -W., Maiti, S., Blumberg, G.
Publikováno v:
Phys. Rev. B 109, L041111 (2024)
We use polarization resolved Raman spectroscopy to demonstrate that for a 3D giant Rashba system the bulk plasmon collective mode can directly couple to the Raman response even in the long wavelength $\mathbf q \rightarrow 0$ limit. Although conventi
Externí odkaz:
http://arxiv.org/abs/2310.04394
We study surface states in the three-dimensional topological insulators Bi$_2$Te$_{3-x}$Se$_{x}$ (x = 0, 2, 3) by polarization resolved resonant Raman spectroscopy. By tracking the spectral intensity of the surface phonon modes with respect to the in
Externí odkaz:
http://arxiv.org/abs/2305.17546
Autor:
Chan, E., Lane, H., Pásztorová, J., Songvilay, M., Johnson, R. D., Downie, R., Bos, J-W. G., Rodriguez-Rivera, J. A., Cheong, S. -W., Ewings, R. A., Qureshi, N., Stock, C.
Publikováno v:
Phys. Rev. B 107, 144420 (2023)
MnSb$_{2}$O$_{6}$ is based on the noncentrosymmetric $P321$ space group with magnetic Mn$^{2+}$ ($S={5/2}$, $L\approx 0$) spins ordering below $T_{\mathrm{N}}=12$ K in a helicoidal structure. The ground state magnetic structure, expected to be built
Externí odkaz:
http://arxiv.org/abs/2304.05732
Autor:
Park, K., Kim, J., Choi, S., Fan, S., Kim, C., Oh, D. G., Lee, N., Cheong, S. -W., Kiryukhin, V., Choi, Y. J., Vanderbilt, D., Lee, J. H., Musfeldt, J. L.
In order to explore the consequences of spin-orbit coupling on spin-phonon interactions in a set of chemically-similar mixed metal oxides, we measured the infrared vibrational properties of Co$_4B_2$O$_9$ ($B$ = Nb, Ta) as a function of temperature a
Externí odkaz:
http://arxiv.org/abs/2304.04865
Autor:
Watanabe, Y., Matsumoto, D., Urakami, Y., Masuda, A., Miyauchi, S., Kaku, S., Cheong, S. -W., Yamato, M., Carter, E.
We find novel polar orders that yield electron (e-) and hole (h+) gas and depend on surface terminations, using density functional theory (DFT) that, unlike existing reports, relaxed all the ion positions of ATiO3 having spontaneous polarization Ps (
Externí odkaz:
http://arxiv.org/abs/2210.12600
Autor:
Chan, E., Pásztorová, J., Johnson, R. D., Songvilay, M., Downie, R. A., Bos, J-W. G., Fabelo, O., Ritter, C., Beauvois, K., Niedermayer, Ch., Cheong, S. -W., Qureshi, N., Stock, C.
Publikováno v:
Phys. Rev. B 106, 064403 (2022)
MnSb$_{2}$O$_{6}$ is based on the structural chiral $P$321 space group #150 where the magnetic Mn$^{2+}$ moments ($S=5/2$, $L\approx 0$) order antiferromagnetically at $T_\mathrm{N}=12$ K. Unlike the related iron based langasite (Ba$_3$NbFe$_3$Si$_2$
Externí odkaz:
http://arxiv.org/abs/2207.10977
Autor:
Park, K., Yokosuk, M. O., Goryca, M., Yang, J. J., Crooker, S. A., Cheong, S. -W., Haule, K., Vanderbilt, D., Kim, H. -S., Musfeldt, J. L.
Magnetoelectrics with ultra-low symmetry and spin-orbit coupling are well known to display a number of remarkable properties including nonreciprocal directional dichroism. As a polar and chiral magnet, Ni$_3$TeO$_6$ is predicted to host this effect i
Externí odkaz:
http://arxiv.org/abs/2203.02416