von Klitzing constant

von Klitzing constant

[fȯn ′klit·siŋ ‚kän·stənt]
(physics)
The quantity RK = h / e 2, where h is Planck's constant and e is the charge of the electron; materials that exhibit the quantum Hall effect have a Hall resistance equal to RK / n, where n is either an integer or a rational fraction. Also known as quantized Hall resistance.
The conventional value of this quantity adopted by international agreement on January 1, 1990, to establish a standard for the ohm, RK- 90 = 25,812.807 ohms.
References in periodicals archive ?
Dziuba, Determination of the von Klitzing Constant and the Fine-Structure Constant Through a Comparison of the Quantized Hall Resistance and the Ohm Derived from the NIST Calculable Capacitor, Metrologia 35, 83-96 (1998).
6] to be consistent with the conventional value of the von Klitzing constant (17).
The 1990 exact, conventional value of the von Klitzing constant,
Measurement of the QHR via the calculable capacitor provides one of the best determinations, expressed in terms of SI units, of the von Klitzing constant [R.
The 1989 NIST value of the von Klitzing constant is [R.