منابع مشابه
Electrons and holes get closer
molybdenum and tungsten dichalcogenides, some of which have been predicted to have larger piezoelectric coefficients than MoS2 (ref. 3). Piezoelectricity has been reported in few-layer C3N4 nanosheets7. Future work may involve the study of higher-order electromechanical effects in few-layer materials that have potential to generate curvature in membranes5. The atomically thin nature of these ma...
متن کاملMotion of Electrons and Holes in Perturbed Periodic Fields
time axis could be detected. Hence, one concludes that if the deformation introduced changes in the elastic constants C33 or C44 these changes must be less than one or two percent for strains up to 10—' radian. Such a result is to be expected since the appearance of slip bands on the surface indicates that the deformation was confined to numerous very narrow bands. Within these bands one might ...
متن کاملCyclotron resonance of electrons and holes in graphene monolayers.
We report studies of cyclotron resonance in monolayer graphene. Cyclotron resonances are detected by observing changes in the photoconductive response of the sample. An electron velocity at the Dirac point of 1.093 x 10(6) m s(-1) is obtained, which is the fastest velocity recorded for all known carbon materials. In addition, a significant asymmetry exists between band structure for electrons a...
متن کاملActivity Coefficients of Electrons and Holes in Semiconductors
Dilu te-solut ion t ranspor t equa t ions wi th cons tan t act ivi ty coeff icients are c o m m o n l y used to mode] s emiconduc tors. These equa t ions are cons is ten t wi th a Bo l t zmann dis t r ibut ion and are inval id in regions where the Species concent ra t ion is close to the respec t ive site concentra t ion. A more r igorous t r ea tmen t of t ranspor t in a s emiconduc to r requi...
متن کاملVELOCITY OVERSHOOT OF ELECTRONS AND HOLES IN Si INVERSION LAYERS
Velocity overshoot of inversion layer electrons and holes is studied experimentally and analytically in special test structures with nominally uniform electric field. The data were used to calibrate energy relaxation parameters in a commercial simulator MEDIC1 ver. 2.0. We propose an analytical model for velocity overshoot and show that it agrees well with experimental data. The amount of hole ...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2014
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.90.115439