Preprints and Peer-reviewed (selected)
Powerful and Tunable THz Emitters Based on the Fe/Pt Magnetic Heterostructure
D. W. Yang, J. H. Liang, C.Zhou, L. Sun, R. Zheng, S. N. Luo, Y. Z. Wu* and J. Qi*
Adv. Optical Mater. 4: 1944 (2016)
Unraveling Photoinduced Spin Dynamics in the Topological Insulator Bi2Se3
M. C. Wang, S. Qiao, Z. Jiang, S. N. Luo, and J. Qi*
Phys. Rev. Lett. 116, 036601 (2016)
Time-resolved terahertz dynamics in thin films of the topological insulator Bi2Se3
R. Valdés Aguilar, J. Qi, M. Brahlek, N. Bansal, A. Azad, J. Bowlan, S. Oh, A. J. Taylor, R. P. Prasankumar and D. A. Yarotski
Appl. Phys. Lett. 106, 011901 (2015)
Polaronic Transport Induced by Competing Interfacial Magnetic Order in a La0.7Ca0.3MnO3/BiFeO3Heterostructure
Y. M. Sheu, S. A. Trugman, L. Yan, J. Qi, Q. X. Jia, A. J. Taylor, and R. P. Prasankumar
Phys. Rev. X 4, 021001 (2014)
Measurement of Two Low-Temperature Energy Gaps in the Electronic Structure of Antiferromagnetic USb2 Using Ultrafast Optical Spectroscopy
J. Qi, T. Durakiewicz, S. A. Trugman, J.-X. Zhu, P. S. Riseborough, R. Baumbach, E. D. Bauer, K. Gofryk, J.-Q. Meng, J. J. Joyce, A. J. Taylor, and R. P. Prasankumar
Phys. Rev. Lett. 111, 057402 (2013)
Coexistence of coupled magnetic phases in epitaxial TbMnO3 films revealed by ultrafast optical spectroscopy
J. Qi, L. Yan, H. D. Zhou, J.-X. Zhu, S. A. Trugman, A. J. Taylor, Q. X. Jia and R. P. Prasankumar
Appl. Phys. Lett. 103, 129901 (2013)
Epitaxial thin films of topological insulator Bi2Te3 with two-dimensional weak anti-localization effect grown by pulsed laser deposition
S.X. Zhang, L. Yan, J. Qi, M. Zhuo, Y.-Q. Wang, R.P. Prasankumar, Q.X. Jia, S.T. Picraux
Thin Solid Films 520: 6459–6462 (2012)
Measurement of graphite tight-binding parameters using high-field magnetoreflectance
L.-C. Tung, P. Cadden-Zimansky, J. Qi, Z. Jiang, and D. Smirnov
Phys. Rev. B 84, 153405 (2011)
Ultrafast carrier and phonon dynamics in Bi2Se3 crystals
J. Qi, X. Chen, W. Yu, P. Cadden-Zimansky, D. Smirnov, N. H. Tolk, I. Miotkowski, H. Cao, Y. P. Chen, Y. Wu, S. Qiao and Z. Jiang
Appl. Phys. Lett. 97, 182102 (2010)
Mechanical and electronic properties of ferromagnetic Ga1-xMnxAs using ultrafast coherent acoustic phonons
J. Qi, J. A. Yan, H. Park, A. Steigerwald, Y. Xu, S. N. Gilbert, X. Liu, J. K. Furdyna, S. T. Pantelides, and N. Tolk
Phys. Rev. B 81, 115208 (2010)
Characterization of boron charge traps at the interface of Si/SiO2 using second harmonic generation
H. Park, J. Qi, Y. Xu, K. Varga, S. M. Weiss, B. R. Rogers, G. Lüpke and N. Tolk
Appl. Phys. Lett. 95, 062102 (2009)
Semiconductor point defect concentration profiles measured using coherent acoustic phonon waves
A. Steigerwald, Y. Xu, J. Qi, J. Gregory, X. Liu, J. K. Furdyna, K. Varga, A. B. Hmelo, G. Lüpke, L. C. Feldman and N. Tolk
Appl. Phys. Lett. 94, 111910 (2009)
Ultrafast laser-induced coherent spin dynamics in ferromagnetic Ga1-xMnxAs/GaAs structures
J. Qi, Y. Xu, A. Steigerwald, X. Liu, J. K. Furdyna, I. E. Perakis, and N. H. Tolk
Phys. Rev. B 79, 085304 (2009)
Coherent magnetization precession in GaMnAs induced by ultrafast optical excitation
J. Qi, Y. Xu, N. H. Tolk, X. Liu, J. K. Furdyna and I. E. Perakis
Appl. Phys. Lett. 91, 112506 (2007)
Near-bandgap wavelength dependence of long-lived traveling coherent longitudinal acoustic phonons in GaSb-GaAs heterostructures
J. K. Miller, J. Qi, Y. Xu, Y.-J. Cho, X. Liu, J. K. Furdyna, I. Perakis, T. V. Shahbazyan, and N. Tolk
Phys. Rev. B 74, 113313 (2006)
Giant photon momentum locked THz emission in a centrosymmetric Dirac semimetal
L. Cheng, Y. Xiong, L. Kang, Y. Gao, Q. Chang, M. Chen, J. Qi, H. Yang, Z. Liu, J. C. W. Song, and E. E. M. Chia
Sci. Adv. 9, eadd7856 (2023)
Ultrafast carrier and lattice dynamics in the Dirac semimetal NiTe2
L. Cheng, F. C. Fei, H. Hu, Y. M. Dai, F. Q. Song, and J. Qi
Phys. Rev. B 106, 104308 (2022) (Editors' Suggestion)
Terahertz wave emission from the trigonal layered PtBi2
Y. Gao, Y. Pei, T. Xiang, L. Cheng, J. Qi
iScience 25, 104511 (2022)
Spintronic sources of ultrashort terahertz electromagnetic pulses
T. S. Seifert, L. Cheng, Z. X. Wei, T. Kampfrath, J. Qi
Appl. Phys. Lett. 120, 180401 (2022) (Editorial)
Extremely low-energy collective modes in a quasi-one-dimensional topological system
Z. X. Wei, S. Zhang, Y. L. Su, L. Cheng, H. D. Zhou, Z. Jiang, H. Weng, J. Qi*
Science China-Phys. Mech.&Astro. 65, 257012 (2022)
Tuning of Optical Behavior in Monolayer and Bilayer Molybdenum Disulfide Using Hydrostatic Pressure
C. Li, Y. Liu, Q. Yang, Q. Zheng, Z. Yan, J. Qi, Y. Liu, and J. Zhu
J. Phys. Chem. Lett. 13, 161 (2021)
Unveiling the Hybridization Process in a Quantum Critical Ferromagnet by Ultrafast Optical Spectroscopy
Y. H. Pei, Y. J. Zhang, Z. X. Wei, Y. X. Chen, K. Hu, Y.-F Yang, H. Q. Yuan*, J. Qi*
Phys. Rev. B. 103, L180409 (2021) arXiv: 2102.08572
Strain-induced Anisotropic Terahertz Emission From a Fe(211)/Pt(110) Bilayer
C.Q. Liu#, W.-T. Lu#, Z.X. Wei#, Y.F. Miao, P. Wang, H. Xia, Y. Liu, F.L. Zeng, J.R. Zhang, C. Zhou, H.B. Zhao, Y.Z. Wu*, Z. Yuan*, J. Qi*
Phys. Rev. Applied, 15, 044022 (2021)
Ultrafast optical spectroscopy of superconducting materials
J. Qi*
Scientia Sinica-Phys, Mech & Astro 51, 047404 (2021) (Invited Review)
Hybridization dynamics in CeCoIn5 revealed by ultrafast optical spectroscopy
Y. P. Liu, Y. J. Zhang, J. J. Dong, H. Lee, Z. X. Wei, W. L. Zhang, C. Y. Chen, H. Q. Yuan, Y.-F. Yang*, J. Qi*
Phys. Rev. Lett. 124, 057404 (2020)
Chiral terahertz wave emission from the Weyl semimetal TaAs
Y. Gao, S. Kaushik, E. J. Philip, Z. Li, Y. Qin,Y. P. Liu, Y. L. Su, X. Chen, W. L. Zhang, H. Weng, D. E. Kharzeev, M. K. Liu*, J. Qi*
Nat. Commun. 11, 720 (2020)
Terahertz emitters based on ultrafast spin-to-charge conversion
Y. L. Su, Z. X. Wei, L. Cheng, J. Qi*
Acta Phys. Sin., 69, 204202 (2020) (Invited Review)
Ultrafast charge and spin dynamics on topological insulators
T. Xiang, L. Cheng, J. Qi*
Acta Phys. Sin., 68, 227202 (2019) (Invited Review)
Broadband terahertz generation via the interface inverse Rashba-Edelstein effect
C. Zhou#, Y. P. Liu#, Z. Wang, S. J. Ma, M. W.Jia, R. Q. Wu, L. Zhou, W. Zhang, M. K. Liu, Y. Z. Wu*, J. Qi*
Phys. Rev. Lett. 121, 086801 (2018)
Bosonic excitations and electron pairing in an electron-doped cuprate superconductor
M. C. Wang, H. S. Yu, J. Xiong, Y. -F. Yang, S. N. Luo, K. Jin*, and J. Qi*
Phys. Rev. B 97, 155157 (2018)
Probing and controlling terahertz-driven structural dynamics with surface sensitivity
P. Bowlan, J. Bowlan, S. A. Trugman, R. Valdes Aguilar, J. Qi, X. Liu, J. Furdyna, M. Dobrowolska, A. J. Taylor, D. A.Yarotski, R. P. Prasankumar
Optica 4, 383 (2017)