Zhiqiang
Li
Assistant Scholar / Scientist
National High Magnetic Field Laboratory
Email:
zli@magnet.fsu.edu
Tel: 850 - 644-1496
UNDER CONSTRUCTION
Research
Interests
Understanding the
physics of novel quantum matter and materials, and tailoring them to enable
advances in technology development and energy utilization. Optical and
magneto-optical spectroscopy; time resolved ultrafast spectroscopy.
Our group is exploring the physics in several intriguing systems at the
forefront of contemporary physics and nanoscience,
such as graphene, topological insulators, transition
metal oxides, organic semiconductors and solar energy, and others.
Publications
23: Zhiqiang Li, Chun Hung Lui, Emmanuele Cappelluti, Lara Benfatto, Kin
Fai Mak, G. Larry Carr, Jie
Shan, and Tony F. Heinz, "Structure-dependent Fano
resonances in the infrared spectra of phonons in few-layer graphene",
Phys. Rev. Lett. 108, 156801 (2012).
22:
Chun Hung Lui, Zhiqiang Li, Kin Fai Mak, Emmanuele Cappelluti &
Tony F. Heinz, "Observation of an electrically tunable band gap in trilayer graphene", Nature
Physics 7, 944 (2011).
21:
Chun Hung Lui, Zhiqiang
Li, Zheyuan Chen, Paul V. Klimov,
Louis E. Brus, Tony F. Heinz, "Imaging Stacking
Order in Few-Layer Graphene", Nano Letters 11,
164 (2011).
20:
E. Henriksen, P. Cadden-Zimansky,
Z. Jiang, Z.Q. Li, L.-C. Tung, M.
Schwartz, M. Takita, Y.-J.
Wang, P. Kim, and H. L. Stormer, "Interaction-Induced Shift of the Cyclotron
Resonance of Graphene Using Infrared
Spectroscopy", Phys. Rev. Lett. 104, 067404 (2010).
19:
O. Khatib, B. Lee, J. Yuen, Z.Q. Li, M. Di Ventra, A. J. Heeger, V. Podzorov, and D. N. Basov, "Infrared signatures of
high carrier densities induced in semiconducting poly(3-hexylthiophene)
by fluorinated organosilane molecules", J. Appl.
Phys. 107, 123702 (2010).
18:
A. A. Schafgans, A. D. LaForge,
S. V. Dordevic, M. M. Qazilbash,
W. J. Padilla, K. S. Burch, Z. Q. Li,
Seiki Komiya, Yoichi Ando, and D. N. Basov, "Towards a Two-Dimensional
Superconducting State of La2-xSrxCuO4 in a Moderate External Magnetic
Field", Phys. Rev. Lett. 104,
157002 (2010).
17:
A. D. LaForge, A. A. Schafgans,
S. V. Dordevic, W. J. Padilla, K. S. Burch, Z. Q. Li, Kouji
Segawa, Seiki Komiya, Yoichi Ando, J. M. Tranquada, and D. N. Basov, "Possibility of
magnetic-field-induced reconstruction of the Fermi surface in underdoped cuprates: Constraints
from infrared magneto-optics", Phys. Rev. B 81, 064510 (2010).
16:
Z.Q. Li, E.A. Henriksen,
Z. Jiang, Z. Hao, M.C. Martin, P. Kim, H.L. Stormer, and D.N. Basov, "Band structure asymmetry of
bilayer graphene revealed by infrared
spectroscopy", Phys. Rev. Lett. 102, 037403 (2009).
15:
A. D. LaForge, W. J. Padilla, K. S. Burch, Z.Q. Li, A. A. Schafgans,
Kouji Segawa, Yoichi Ando,
and D. N. Basov, "Magnetic field induced modification of superfluid
density and interplane spectral weight in
YBa2Cu3Oy", Phys. Rev. B 79, 104516 (2009).
14:
Z.Q. Li, E.A. Henriksen,
Z. Jiang, Z. Hao, M.C. Martin, P. Kim, H.L. Stormer, and D.N. Basov, "Dirac charge dynamics in graphene by infrared spectroscopy", Nature Physics 4,
532 (2008).
13:
L. M. Zhang, Z.Q. Li, D. N. Basov,
M. M. Fogler, Z. Hao, and
M. C. Martin, "Determination of the electronic structure of bilayer graphene from infrared spectroscopy", Phys. Rev. B 78, 235408 (2008).
12:
A. D. LaForge, W. J. Padilla, K. S. Burch, Z.Q. Li, A. A. Schafgans,
Kouji Segawa, Yoichi Ando,
and D. N. Basov, "Sum Rules and Interlayer Infrared Response of the High
Temperature YBa2Cu3Oy Superconductor in an External Magnetic Field", Phys.
Rev. Lett. 101, 097008 (2008).
11:
M. M. Qazilbash, Z.Q.
Li, V. Podzorov, M. Brehm,
F. Keilmann, B. G. Chae, H.
T. Kim, and D. N. Basov, "Electrostatic modification of infrared response
in gated structures based on VO2", Appl. Phys. Lett.
92, 241906 (2008).
10:
Z.Q. Li, V. Podzorov,
N. Sai, M.C. Martin, M.E. Gershenson,
M. Di Ventra and D.N. Basov, "Light Quasiparticles
Dominate Electronic Transport in Molecular Crystal Field-Effect
Transistors", Phys. Rev. Lett. 99, 016403 (2007).
9:
A.D. Meyertholen, Z.Q. Li, D.N. Basov, M.M. Fogler, M.C.
Martin, G.M. Wang, A.S. Dhoot, D. Moses, and A.J. Heeger, "Concentration-dependent mobility in organic
field-effect transistors probed by infrared spectromicroscopy
of the charge density profile", Appl. Phys. Lett.
90, 222108 (2007).
8:
N. Sai, Z.Q.
Li, M.C. Martin, D.N. Basov, and M. Di Ventra, "Electronic excitations
and metal-insulator transition in poly(3-hexylthiophene)
organic field-effect transistors", Phys. Rev. B 75, 045307 (2007).
7.
A.D. LaForge, W.J. Padilla, K.S. Burch, Z.Q. Li, S.V. Dordevic,
Kouji Segawa, Yoichi Ando,
and D.N. Basov, "Interlayer electrodynamics and unconventional vortex state
in YBa2Cu3Oy", Phys. Rev. B 76, 054524 (2007).
6:
Z.Q. Li, G.M. Wang, N. Sai, D. Moses, M.C. Martin, M. Di Ventra, A.J. Heeger, and D.N. Basov, "Infrared Imaging of the
Nanometer-Thick Accumulation Layer in Organic Field-Effect Transistors",
Nano Letters 6, 224 (2006).
5:
Z.Q. Li, S.-W.
Tsai, W.J. Padilla, S.V. Dordevic, K.S. Burch, Y.J.
Wang, and D.N. Basov, "Infrared probe of the anomalous magnetotransport
of highly oriented pyrolytic graphite in the extreme
quantum limit", Phys. Rev. B 74, 195404 (2006).
4:
Z.Q. Li, G.M. Wang, K.J. Mikolaitis, D.Moses, A. J. Heeger, and D.N. Basov, "An infrared probe of tunable
dielectrics in metal-oxide-semiconductor structures", Appl. Phys. Lett. 86, 223506 (2005).
3:
Y.S. Lee, Z.Q. Li, W.J. Padilla,
S.V. Dordevic, C.C. Homes, K. Segawa,
Y. Ando, and D.N. Basov, "Strong-coupling effects in cuprate
high-Tc superconductors by magneto-optical
studies", Phys. Rev. B 72, 172511 (2005).
2:
Y.S. Lee, K. Segawa, Z.Q. Li, W.J. Padilla, M. Dumm, S.V. Dordevic, C.C. Homes, Y. Ando, and D.N. Basov,
"Electrodynamics of the nodal metal state in weakly doped high-Tc cuprates", Phys. Rev. B
72, 054529 (2005).
1:
W.J. Padilla, Z.Q. Li, K.S. Burch,
Y.S. Lee, K.J. Mikolaitis, and D.N. Basov,
"Broadband multi-interferometer spectroscopy in high magnetic field from
THz to visible", Review of Scientific Instruments 75, 4710 (2004).