Zobrazeno 1 - 10
of 144
pro vyhledávání: '"Yarotski D"'
Autor:
Lee, Min-Cheol, Sirica, N., Teitelbaum, S. W., Maznev, A., Pezeril, T., Tutchton, R., Krapivin, V., de la Pena, G. A., Huang, Y., Zhao, L. X., Chen, G. F., Xu, B., Yang, R., Shi, J., Zhu, J., Yarotski, D. A., Qiu, X. G., Nelson, K. A., Trigo, M., Reis, D. A., Prasankumar, R. P.
Publikováno v:
Phys. Rev. Lett. 128, 155301 (2022)
Using femtosecond time-resolved X-ray diffraction, we investigated optically excited coherent acoustic phonons in the Weyl semimetal TaAs. The low symmetry of the (112) surface probed in our experiment enables the simultaneous excitation of longitudi
Externí odkaz:
http://arxiv.org/abs/2011.07196
Coherent Helicity-Dependent Spin-Phonon Oscillations in the Ferromagnetic van der Waals Crystal CrI3
Autor:
Padmanabhan, P., Buessen, F. L., Tutchton, R., Kwock, K. W. C., Gilinsky, S., Lee, M. C., McGuire, M. A., Singamaneni, S. R., Yarotski, D. A., Paramekanti, A., Zhu, J. -X., Prasankumar, R. P.
Publikováno v:
Nat Commun 13, 4473 (2022)
The discovery of two-dimensional (2D) systems hosting intrinsic long-range magnetic order represents a seminal addition to the rich physical landscape of van der Waals (vdW) materials. CrI3 has emerged as perhaps the most salient example, as the inte
Externí odkaz:
http://arxiv.org/abs/2010.04915
Ultrafast pump-probe technique is a powerful tool to understand and manipulate properties of materials for designing novel quantum devices. An intense, single cycle terahertz pulse can change the intrinsic properties of semiconductor quantum dots to
Externí odkaz:
http://arxiv.org/abs/2007.05151
Autor:
Sirica, N, Orth, P. P., Scheurer, M. S., Dai, Y. M., Lee, M. -C., Padmanabhan, P., Mix, L. T., Teitelbaum, S. W., Trigo, M., Zhao, L. X., Chen, G. F., Xu, B., Yang, R., Shen, B., Hu, C., Lee, C. -C., Lin, H., Cochran, T. A., Trugman, S. A., Zhu, J. -X., Hasan, M. Z., Ni, N., Qiu, X. G., Taylor, A. J., Yarotski, D. A., Prasankumar, R. P.
Publikováno v:
Nat. Mater. (2021)
Symmetry plays a central role in conventional and topological phases of matter, making the ability to optically drive symmetry change a critical step in developing future technologies that rely on such control. Topological materials, like the newly d
Externí odkaz:
http://arxiv.org/abs/2005.10308
Autor:
Sirica, N., Tobey, R. I., Zhao, L. X., Chen, G. F., Xu, B., Yang, R., Shen, B., Yarotski, D. A., Bowlan, P., Trugman, S. A., Zhu, J. -X., Dai, Y. M., Azad, A. K., Ni, N., Qiu, X. G., Taylor, A. J., Prasankumar, R. P.
Publikováno v:
Phys. Rev. Lett. 122, 197401 (2019)
We investigate polarization-dependent ultrafast photocurrents in the Weyl semimetal TaAs using terahertz (THz) emission spectroscopy. Our results reveal that highly directional, transient photocurrents are generated along the non-centrosymmetric c-ax
Externí odkaz:
http://arxiv.org/abs/1811.02723
Autor:
Bowlan, P., Bowlan, J., Trugman, S. A., Aguilar, R. Valdes, Qi, J., Liu, X., Furdyna, J., Dobrowolska, M., Taylor, A. J., Yarotski, D. A., Prasankumar, R. P.
Intense, single-cycle terahertz (THz) pulses offer a promising approach for understanding and controlling the properties of a material on an ultrafast time scale. In particular, resonantly exciting phonons leads to a better understanding of how they
Externí odkaz:
http://arxiv.org/abs/1610.00871
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:
Xu, B., Dai, Y. M., Zhao, L. X., Wang, K., Yang, R., Zhang, W., Liu, J. Y., Xiao, H., Chen, G. F., Trugman, S. A., Zhu, J. -X., Taylor, A. J., Yarotski, D. A., Prasankumar, R. P., Qiu, X. G.
Publikováno v:
Nat. Comm. 8, 14933 (2017)
Strong coupling between discrete phonon and continuous electron-hole pair excitations can give rise to a pronounced asymmetry in the phonon line shape, known as the Fano resonance. This effect has been observed in a variety of systems, such as stripe
Externí odkaz:
http://arxiv.org/abs/1608.08160
Autor:
Bowlan, P., Trugman, S. A., Wang, X., Dai, Y. M., Cheong, S. -W., Bauer, E. D., Taylor, A. J., Yarotski, D. A., Prasankumar, R. P.
We investigate spin dynamics in the antiferromagnetic (AFM) multiferroic TbMnO3 using optical- pump, terahertz (THz)-probe spectroscopy. Photoexcitation results in a broadband THz transmission change, with an onset time of 25 ps at 6 K that becomes f
Externí odkaz:
http://arxiv.org/abs/1608.05991
Autor:
Chikara, S., Singleton, J., Bowlan, J., Yarotski, D. A., Lee, N., Choi, H. Y., Choi, Y. J., Zapf, V. S.
We report electric polarization and magnetization measurements in single crystals of double perovskite Lu2MnCoO6 using pulsed magnetic fields and optical second harmonic generation (SHG) in DC magnetic fields. we observe well-resolved magnetic field-
Externí odkaz:
http://arxiv.org/abs/1604.07802