preface to fifteenth edition

2.16 SECTION 2
TABLE 2.2
Physical and Chemical Symbols and Definitions (Continued)
J. Solid state
Name Symbol SI unit Definition
Acceptor ionization energy E a J
Bragg angle rad n 2d sin
Bloch function u k (r) m3/2
(r) u k (r) exp(ik · r)
Burgers vector b m
Charge density of electrons C·m 3 (r) e*(r)(r)
Circular wave vector:
For particles (k) k, q m 1 k 2/
For phonons (q)
Conductivity tensor ik S·m 1 1
Curie temperature T C K
Debye circular frequency D s 1
Debye circular wavenumber q D m 1
Debye-Waller factor
B, D
Density of states N E
1 3
J · m
N E dN(E)/dE
Density of vibrational N , g s·m 3 N dN()/d
modes (spectral)
Diffusion coefficient D m 2 ·s 1 dN/dt DA dn/dx
Diffusion length L m L (D) 1/2
Displacement vector of an u m u R R 0
ion
Donor ionization energy E d J
Effective mass m* kg
Equilibrium position vector R 0
m
of an ion
Fermi energy E F J
Gap energy
E g
Grüneisen parameter , V/C V
Hall coefficient A H , R H m 3 ·C 1 E j R H (B j)
Lattice plane spacing d m
Lattice vector R, R 0 m
Lorenz coefficient L V 2 ·K 2 L /T
Madelung constant
NAzze 2
Ecoul
4 0 R 0
Mobility m 2 1 1 ·V ·s
drift /E
Mobility ratio b b n / p
Neel temperature T N K
Number density, number n
m 3
concentration
Order parameters:
Long range
s
Short range
Order of reflection
n
Particle position vector:
Electron r m
Ion position R j m
Peltier coefficient V
Reciprocal lattice vector
(circular)
G m 1 G R 2m