Apparatus: Two solenoids, Constant current supply, Four probe, Digital gauss meter, Hall effect apparatus (which consist of Constant Current Generator (CCG), digital milli voltmeter and Hall probe). ... – Hall voltage V H The value we want to measure calculate Hall coefficient R H =V H Using the free-electron model, the Hall coefficient is calculated as R H = 1 n e, where e is the elementary charge and n is the carrier density. Most common sample geometry. 1gÝý¥Ø24fï>µDʧ9µ4|ÛZ²In±ws_)P±ÔN«Ý¨Cj½)'Ë0> P[³µé õ×dòTs6âÙsj©E%þÜÆR ähUé÷ù¿´SgÏ»pñÉÎð¯&ÇÖ¨×(+PízI¤Å«6Sͧº¨*6×Î}%FXÅÎî=%ùÀ½ÒVZ%VѲWë°. Note that the Hall coefficient is best reported in meters cubed per coulomb (SI units). 17, pp. It is a characteristic of the material from which the conductor is made, since its value depends on the type, number, and … The value of Hall coefficient depends on the type, number, and properties of the charge carriers that constitute the current. Yet for certain substances, the Hall Coefficient dictates that the charge carriers are positive. The fundamental quantum of Hall resistance is h/e2 =25,813Ω. }); OVERVIEW (a) Electrons move to the left in this flat conductor (conventional current to the right). Common van der Pauw Sample Geometries. window.jQuery || document.write('