Charge transport and carrier dynamics in liquids probed by THz time-domain spectroscopy

被引:89
作者
Knoesel, E
Bonn, M
Shan, J
Heinz, TF
机构
[1] Columbia Univ, Dept Phys, New York, NY 10027 USA
[2] Leiden Inst Chem, NL-2300 RA Leiden, Netherlands
关键词
D O I
10.1103/PhysRevLett.86.340
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We examine the transport properties and the dynamics of free electrons in n-hexane by means of femtosecond spectroscopy using an ultraviolet pump pulse to create the electrons and a THz electromagnetic pulse as a probe. The complex dielectric response of the photogenerated electrons is determined over a broad range of frequencies, from which we infer the electron scattering time and density through the Drude model. The time evolution of the carrier density reveals nongeminate electron-ion recombination within hundreds of picoseconds at high ion concentration.
引用
收藏
页码:340 / 343
页数:4
相关论文
共 34 条
[1]   Conductivity artifacts in optical-pump THz-probe measurements of YBa2Cu3O7 [J].
Averitt, RD ;
Rodriguez, G ;
Siders, JLW ;
Trugman, SA ;
Taylor, AJ .
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 2000, 17 (02) :327-331
[2]   MOBILITY OF LOCALIZED AND QUASIFREE EXCESS ELECTRONS IN LIQUID HYDROCARBONS [J].
BERLIN, YA ;
NYIKOS, L ;
SCHILLER, R .
JOURNAL OF CHEMICAL PHYSICS, 1978, 69 (06) :2401-2406
[3]   FEMTOSECOND STUDY OF GEMINATE ELECTRON-HOLE RECOMBINATION IN NEAT ALKANES [J].
BOWMAN, RM ;
LU, H ;
EISENTHAL, KB .
JOURNAL OF CHEMICAL PHYSICS, 1988, 89 (01) :606-608
[4]   Dynamics of geminate charge separation in liquid methylcyclohexane studied by the photoassisted ion pair separation technique [J].
Brazgun, FF ;
Nadtochenko, VA ;
Rubtsov, IV ;
Lukin, LV .
CHEMICAL PHYSICS, 1996, 211 (1-3) :469-488
[5]   Femtosecond dynamics of electron localization at interfaces [J].
Ge, NH ;
Wong, CM ;
Lingle, RL ;
McNeill, JD ;
Gaffney, KJ ;
Harris, CB .
SCIENCE, 1998, 279 (5348) :202-205
[6]   ELECTRON-MOBILITY, FREE ION YIELDS, AND ELECTRON THERMALIZATION DISTANCES IN N-ALKANE LIQUIDS - EFFECT OF CHAIN-LENGTH [J].
GEE, N ;
SENANAYAKE, PC ;
FREEMAN, GR .
JOURNAL OF CHEMICAL PHYSICS, 1988, 89 (06) :3710-3717
[7]   PICOSECOND PUMP AND PROBE SPECTROSCOPY UTILIZING FREELY PROPAGATING TERAHERTZ RADIATION [J].
GREENE, BI ;
FEDERICI, JF ;
DYKAAR, DR ;
LEVI, AFJ ;
PFEIFFER, L .
OPTICS LETTERS, 1991, 16 (01) :48-49
[8]   PICOSECOND TIME-RESOLVED FAR-INFRARED EXPERIMENTS ON CARRIERS AND EXCITONS IN GAAS-ALGAAS MULTIPLE-QUANTUM WELLS [J].
GROENEVELD, RHM ;
GRISCHKOWSKY, D .
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 1994, 11 (12) :2502-2507
[9]   Femtosecond far-infrared pump-probe spectroscopy: A new tool for studying low-frequency vibrational dynamics in molecular condensed phases [J].
Haran, G ;
Sun, WD ;
Wynne, K ;
Hochstrasser, RM .
CHEMICAL PHYSICS LETTERS, 1997, 274 (04) :365-371
[10]  
HOLROYD RA, 1989, ANNU REV PHYS CHEM, V40, P439