Kinetics of the alignment of O2− centers in stressed alkali halide crystals

Phase relaxation in the vicinity of the dynamic instability: anomalous temperature dependence of zero-phonon line

“…Consequently, in the case of a strong linear Jahn-Teller effect at low temperatures the ZPL is described by Eqs. (15) and (16). Therefore, we can conclude that the width and the position of the ZPL in the case of the optical transition A 1 -E with a strong linear Jahn-Teller effect in the E-state depend on temperature according to T 3 and to T 2 ; respectively.…”

“…The adiabatic potential of the E-state is given by the matrix V 2 in the diagonal representation; it has the form of the Mexican hat [15,[9][10][11]. The vibronic E-state is invariant with respect to the rotation of the q 1 ; q 2 -surface through an arbitrary angle f with the simultaneous rotation of the electronic basis states on the angle 2j: In polar coordinates r ¼ ðq 2 1 þ q 2 2 Þ 1=2 and f ¼ arctanðq 2 =q 1 Þ the adiabatic potentials do not depend on j:…”

“…: If one takes into account also the quadratic vibronic interaction in the E-state, then the f-dependent term appears in the APES of this state [15,[9][10][11] …”

Acoustic Behavior of the Jahn-Teller IonNi3+inAl2Sturge1, Krause2, Gyorgy3 et al. 1967Phys. Rev.560100View full textAdd to dashboardCite

“…Besides the "direct" process, there is a "Raman" process 14,19 in which a phonon is scattered by the impurity, taking up or losing a small amount of energy. Using a Debye model, Pirc, Zeks, and Gosar find for the sum of the direct and Raman processes 19 where T-i=BTil+(T/T 0 n, kT 0 =(2h*ps 5 y /2 /a.…”

Applications of the Transport Integrals in Solid-State Physics and in Electron Spin Relaxation

“…pro duci ng dyna mi cal inequi valence b etween p otenti al m ini ma. As a result the reori enta ti o n ra te due to the two -phono n Ram an pro cessesb ecomes tem p erature dep endent and pro po rti ona l to À 2 T 3 I 2 ( È D = T ) ; here À i s a tunnel l i ng spli tti ng [11].…”