0.
sincostan
sin-1cos-1tan-1πe
xyx3x2ex10x
y√x3√x√xlnlog
()1/x%n!
789+MS
456–M+
123×M-
0.EXP÷MR
±RNDC=MC
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Planck Constant h6.6260755E-34[J·s]
Planck Constant ℏ1.054572669E-34[J·s]
Electron charge e1.60217662E-19[A·s]
h/e4.136127028E-15[J/A]
h/e225812.80745[V/A]
Boltzman constant kB1.380658E-23[J/K]
Free electron mass m09.10938356E-31[kg]
Fine structure constant α7.2973525693E-3[]
Speed of light c299792458[m/s]
IOFFE semiconductor properties

or enter search term such as:

(Boltzmann constant * 4.2 Kelvin) in electron Volt

into WolframAlpha

GaAs Estimates:
cyclotron energy: ℏ·ωc/kB ~ 20·B [K]
Zeeman energy: g·μ·B/kB ~ 0.29·B [K]
magnetic length l: (ℏ/(e·B))0.5/kB ~ 25·B-0.5 [nm]
Coulomb energy: e2/(4πε·l)/kB ~ 50·B0.5 [K]
electron density: n ~ 2.4·1014·B·v[m-2]
magnetic field B [T]

filling factor v

electron density n [m-2]
(enter two values to calculate third one)

Rxx(B=0) [Ohms]

electron density [m-2]

length [m]

width [m]
electron mobility
μ=(e·n·ρxx(B=0))-1

[m2/Vs]
[cm2/Vs]


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