The quantum theory of lattice dynamics. I
1969 ◽
Vol 310
(1500)
◽
pp. 79-87
◽
Keyword(s):
The dynamics of a crystal is examined on the basis of the adiabatic approximation. In part I we examine the form of the dynamical and anharmonic tensors on the assumption that the effective nuclear potential energy can be represented as a simple two-body interaction. In part II we derive expressions for the electronic contributions on the basis of the Hartree-Fock approximation and show that these electron-nuclear interactions are more complex than a simple two-body interaction. In part III we examine these interactions in more detail and find that the two-body approximation is equivalent to a rigid-ion model and that this approximation becomes exact in the limit q = 0.
1969 ◽
Vol 310
(1500)
◽
pp. 101-109
◽
Keyword(s):
1969 ◽
Vol 310
(1500)
◽
pp. 89-99
◽
Keyword(s):
1969 ◽
Vol 310
(1500)
◽
pp. 111-119
◽
2012 ◽
Vol 27
(28)
◽
pp. 1250162
◽
Keyword(s):
1971 ◽
Vol 9
(3)
◽
pp. 185-189
◽
1989 ◽
Vol 157
(3)
◽
pp. 211-216
◽
Keyword(s):
1977 ◽
Vol 83
(2)
◽
pp. 615-624
◽
Keyword(s):