Zobrazeno 1 - 10
of 164
pro vyhledávání: '"Kung, H. H."'
Autor:
Bannies, J., Michiardi, M., Kung, H. -H., Godin, S., Simonson, J. W., Oudah, M., Zonno, M., Gorovikov, S., Zhdanovich, S., Elfimov, I. S., Damascelli, A., Aronson, M. C.
In the past two decades, various classes of topological materials have been discovered, spanning topological insulators, semimetals, and metals. While the observation and understanding of the topology of a material has been a primary focus so far, th
Externí odkaz:
http://arxiv.org/abs/2407.08798
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:
Lee, A. C., Peng, B., Du, K., Kung, H. -H., Monserrat, B., Cheong, S. -W., Won, C. J., Blumberg, G.
The optical transitions between spin-polarized bands of the quasi-two dimensional Rashba system BiTeI are investigated using polarization resolved resonant Raman spectroscopy. We detect chiral excitations between states with opposite helicity and com
Externí odkaz:
http://arxiv.org/abs/2202.03569
Autor:
Michiardi, M., Boschini, F., Kung, H. -H., Na, M. X., Dufresne, S. K. Y., Currie, A., Levy, G., Zhdanovich, S., Mills, A. K., Jones, D. J., Mi, J. L., Iversen, B. B., Hofmann, Ph., Damascelli, A.
Publikováno v:
Nature Communications 13, 3096 (2022)
In spintronic devices, the two main approaches to actively control the electrons' spin degree of freedom involve either static magnetic or electric fields. An alternative avenue relies on the application of optical fields to generate spin currents, w
Externí odkaz:
http://arxiv.org/abs/2105.09320
Autor:
Bannies, J., Razzoli, E., Michiardi, M., Kung, H. -H., Elfimov, I. S., Yao, M., Fedorov, A., Fink, J., Jozwiak, C., Bostwick, A., Rotenberg, E., Damascelli, A., Felser, C.
Publikováno v:
Phys. Rev. B 103, 155144 (2021)
Several early transition metal dipnictides have been found to host topological semimetal states and exhibit large magnetoresistance. In this study, we use angle-resolved photoemission spectroscopy (ARPES) and magneto-transport to study the electronic
Externí odkaz:
http://arxiv.org/abs/2103.13515
Autor:
Kung, H. -H., Goyal, A. P., Maslov, D. L., Wang, X., Lee, A., Kemper, A. F., Cheong, S. -W., Blumberg, G.
Publikováno v:
Proceedings of the National Academy of Sciences Feb 2019, 116 (10) 4006-4011
The protected electron states at the boundaries or on the surfaces of topological insulators (TIs) have been the subject of intense theoretical and experimental investigations. Such states are enforced by very strong spin-orbit interaction in solids
Externí odkaz:
http://arxiv.org/abs/1903.01999
Publikováno v:
Phys. Rev. Materials 3, 065003 (2019)
We performed an optical spectroscopy study of electronic and magnetic excitations for a rare-earth system with a single electron quasi-localized in the f-shell on an ion at high-symmetry crystallographic site in application to CeB$_{6}$ heavy-fermion
Externí odkaz:
http://arxiv.org/abs/1902.09049
Autor:
Wu, S. -F., Zhang, W. -L., Li, L., Cao, H. B., Kung, H. -H., Sefat, A. S., Ding, H., Richard, P., Blumberg, G.
We employ polarization-resolved Raman spectroscopy to study critical nematic fluctuations in Ba(Fe$_{1-x}$Au$_x$)$_2$As$_2$ superconductors above and across well separated tetragonal to orthorhombic phase transition at temperature $T_S(x)$ and the N\
Externí odkaz:
http://arxiv.org/abs/1712.06066
Autor:
Wu, S. -F., Zhang, W. -L., Li, L., Cao, H. -B., Kung, H. -H., Sefat, A. S., Ding, H., Richard, P., Blumberg, G.
Publikováno v:
Phys. Rev. B 102, 014501 (2020)
We used polarization-resolved Raman scattering to study magneto-elastic coupling in Ba(Fe$_{1-x}$Au$_{x}$)$_2$As$_2$ crystals as a function of light Au-doping, materials for which temperatures of the structural transition ($T_S$) and of the magnetic
Externí odkaz:
http://arxiv.org/abs/1712.01903