Effective mass (m*) is defined as: where x, y, z are the directions in the reciprocal Cartesian space (2π/A), En(k) is the dispersion relation for the n-th electronic band. The explicit form of the ...

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The Aadhaar is a 12-digit unique number issued by the Unique Identification Authority of India (UIDAI). This number is issued by taking a person's biometric details such as iris scan and fingerprints, ...