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Semiconductors Class 12 Physics Chapter 14 | JEE Main Important Topics | JEE Exam Preparations

Discovery of segmented Fermi surface induced by Cooper pair momentum on a hybrid material platform

A semiconductor has parabolic band structure. The Fermi level i... | Filo

a) The bandstructure of the monovalent metal Cu is such that the highest occupied band lies completely below the Fermi energy in the vicinity of the ((1)/(2), (1)/(2), (1)/(2). ) point of the Brillouin zone. Describe the form of the Fermi surface. (If stuck, you might find it helpful to look at Fig. 4.8.) b) The magnitude of the energy gap at ((1)/(2), (1)/(2), (1)/(2). ) is 4 eV and it is approximately independent of wavevector near this point. Estimate the radius of the Fermi surface 'neck'. (

We want to make a Schottky diode on one surface of an n-type semiconductor, and an ohmic contact on the other side. The electron affinity is 5 eV, band gap is 1.5 eV, and the Fermi potential is 0.25 eV ? What should be values of work functions of the two metals? (Give your answer as greater than or less than certain values.) Sketch the band diagram of the structure. | Numerade