-
18
-
-
0000326524
-
-
and W.
-
(1990)
Phys. Rev. Lett.
, vol.65
, pp. 3185
-
-
Isaacs, E.D.1
McWhan, D.B.2
Kleinman, R.N.3
Bishop, D.J.4
Ice, G.E.5
Zschack, P.6
Gaulin, B.D.7
Mason, T.E.8
Garrett, J.D.9
Buyers, J.L.10
-
19
-
-
0001364612
-
-
(1991)
Phys. Rev. B
, vol.46
, pp. 5287
-
-
Tang, C.C.1
Stirling, W.G.2
Lander, G.H.3
Gibbs, D.4
Herzog, W.5
Carra, P.6
Thole, B.T.7
Mattenberger, K.8
Vogt, O.9
-
21
-
-
0000567349
-
-
(1987)
Phys. Rev. B
, vol.36
, pp. 5609
-
-
Goldman, A.I.1
Mohanty, K.2
Shirane, G.3
Horn, P.M.4
Greene, R.L.5
Peters, C.J.6
Thurston, T.R.7
Birgeneau, R.J.8
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30
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84927332327
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The polarization of the conduction electrons reverses with a period of case 26 over 27 lattice constants at TN (wave vector, Q=0.963). This means one must travel 27 lattice constants before the polarization is identical in magnitude and direction at an equivalent point on the lattice. The modulation may be equivalently described by a wave vector Q or δ = 1- Q, which are trivially related.
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34
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0008230033
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Conceptually, there are two mechanisms for producing a density wave in the charge distribution. First, the lattice may be periodically distorted, with each ion retaining its equilibrium charge (a strain wave). Second, there may be a periodic excess and deficit of charge on the sites of an undistorted lattice. In the CDW literature, these two effects are collectively referred to as charge-density waves. Both produce x-ray diffraction peaks and in this work we do not distinguish between the two contributions at +- 2Q and +- 4 Q, referring to both satellites as CDW peaks. The dominant contribution to the x-ray intensity arises from the core electrons (the strain wave). An attempt has been made to separate the two contributions [, ]. The x-ray intensity was found to be largely due to the lattice distortion and a small additional conduction-electron density wave was claimed.
-
(1993)
J. Phys. C
, vol.5
, pp. L77
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Mori, M.1
Tsunoda, Y.2
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46
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84927332326
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The exact expression for the structure factor derived using the generating function for Bessel functions eiz sin φ = tsumnein φ Jn(z) reduces to Eq. (4) in the small distortion limit (Ref. 47).
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59
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0002778110
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(1986)
Phys. Rev. Lett.
, vol.57
, pp. 98
-
-
Brock, J.D.1
Aharony, A.2
Birgeneau, R.J.3
Evans-Lutterodt, K.W.4
Litster, J.D.5
Horn, P.M.6
Stephenson, G.B.7
Tajbakhsh, A.R.8
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