scholarly journals Enhancement of Wigner crystallization in quasi-low-dimensional solids

2006 ◽  
Vol 73 (15) ◽  
Author(s):  
G. Rastelli ◽  
P. Quémerais ◽  
S. Fratini
Keyword(s):  
Wigner Crystallization ◽  
Low Dimensional

Wigner crystallization in low dimensional materials

2005 ◽  
Vol 131 ◽  
pp. 277-280 ◽  
Author(s):  
G. Rastelli ◽  
P. Quémerais ◽  
S. Fratini
Keyword(s):  
Wigner Crystallization ◽  
Low Dimensional ◽  
Low Dimensional Materials

Thermoelectric Properties of PbSr(Se,Te)-Based Low Dimensional Structures

2000 ◽  
Vol 626 ◽  
Author(s):  
Harald Beyer ◽  
Joachim Nurnus ◽  
Harald Böttner ◽  
Armin Lambrecht ◽  
Lothar Schmitt ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermoelectric Properties ◽  
Power Factor ◽  
Evaluation Method ◽  
Interband Transition ◽  
Multiple Quantum Well ◽  
Calculated Data ◽  
Multiple Quantum ◽  
Ir Transmission ◽  
Low Dimensional

ABSTRACTThermoelectric properties of low dimensional structures based on PbTe/PbSrTe-multiple quantum-well (MQW)-structures with regard to the structural dimensions, doping profiles and levels are presented. Interband transition energies and barrier band-gap are determined from IR-transmission spectra and compared with Kronig-Penney calculations. The influence of the data evaluation method to obtain the 2D power factor will be discussed. The thermoelectrical data of our layers show a more modest enhancement in the power factor σS2 compared with former publications and are in good agreement with calculated data from Broido et al. [5]. The maximum allowed doping level for modulation doped MQW structures is determined. Thermal conductivity measurements show that a ZT enhancement can be achieved by reducing the thermal conductivity due to interface scattering. Additionally promising lead chalcogenide based superlattices for an increased 3D figure of merit are presented.

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