Zobrazeno 1 - 10
of 357
pro vyhledávání: '"Bowlan P."'
Autor:
Carr, Adra, Bowlan, John, Mazzoli, Claudio, Barbour, Andi, Hu, Wen, Wilkins, Stuart, Walker, Colby, Ding, Xiaxin, Kim, Jong Hyuk, Lee, Nara, Choi, Young Jai, Lin, Shi-Zeng, Sandberg, Richard L., Zapf, Vivien S.
Publikováno v:
Phys. Rev. B 103, 060401 (2021)
X-ray photon correlation spectroscopy (XPCS) enables us to study dynamics of antiferromagnets. Using coherent soft X-ray diffraction, we resonantly probe Mn and Co Bragg peaks in the frustrated magnetic chain compound Lu2CoMnO6 significantly below th
Externí odkaz:
http://arxiv.org/abs/2006.01239
Publikováno v:
EPJ Web of Conferences, Vol 41, p 04002 (2013)
With strong THz pulses, we measure ultrafast transport of electrons, holes, and an electron-hole plasma in GaAs. The transition from ballistic to drift-like transport is strongly influenced by electron-hole scattering.
Externí odkaz:
https://doaj.org/article/54d4ccd6d17d4582ac982cd33f73c84a
Publikováno v:
EPJ Web of Conferences, Vol 41, p 04024 (2013)
With two-dimensional THz spectroscopy the dynamics of low-energy carriers in graphene is determined. Both intra- and interband absorption contribute to the observed ultrafast pump-probe signals.
Externí odkaz:
https://doaj.org/article/96df0269d96f4be290b5e2c1e69539e0
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:
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:
Li, Weiwei, He, Qian, Wang, Le, Zeng, Huizhong, Bowlan, John, Ling, Langsheng, Yarotski, Dmitry A., Zhang, Wenrui, Zhao, Run, Dai, Jiahong, Gu, Junxing, Shen, Shipeng, Guo, Haizhong, Pi, Li, Wang, Haiyan, Wang, Yongqiang, Velasco-Davalos, Ivan A., Wu, Yangjiang, Hu, Zhijun, Chen, Bin, Li, Run-Wei, Sun, Young, Jin, Kuijuan, Zhang, Yuheng, Chen, Hou-Tong, Ju, Sheng, Ruediger, Andreas, Shi, Daning, Borisevich, Albina Y., Yang, Hao
Controlling functionalities, such as magnetism or ferroelectricity, by means of oxygen vacancies (VO) is a key issue for the future development of transition metal oxides. Progress in this field is currently addressed through VO variations and their
Externí odkaz:
http://arxiv.org/abs/1708.08235
Akademický článek
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Autor:
Sinha, Kishan, Zhang, Yubo, Jiang, Xuanyuan, Wang, Xiao, Zhang, Xiaozhe, Ryan, Philip J., Kim, Jong-Woo, Bowlan, John, Yarotski, Dmitry A, Li, Yuelin, DiChiara, Anthony D., Cheng, Xuemei, Wu, Xifan, Xu, Xiaoshan
Publikováno v:
Phys. Rev. B 95, 094110 (2017)
Elastic strain is potentially an important approach in tuning the properties of the improperly multiferroic hexagonal ferrites, the details of which have however been elusive due to the experimental difficulties. Employing the method of restrained th
Externí odkaz:
http://arxiv.org/abs/1610.00073
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