Melting of the cooperative Jahn-Teller distortion in LaMnO 3 single crystal studied by Raman spectroscopy

2001 ◽  
Vol 22 (1) ◽  
pp. 11-16 ◽  
Author(s):  
L. Martín-Carrón ◽  
A. de Andrés
Keyword(s):  
Raman Spectroscopy ◽  
Single Crystal ◽  
Teller Distortion ◽  
Jahn Teller ◽  
Jahn Teller Distortion

Jahn-Teller distortion ordering in single-crystal Nd1/2Sr1/2MnO3

2004 ◽  
Vol 1 (7) ◽  
pp. 1641-1644 ◽  
Author(s):  
Mohammad E. Ghazi ◽  
P. D. Hatton
Keyword(s):  
Single Crystal ◽  
Teller Distortion ◽  
Jahn Teller ◽  
Jahn Teller Distortion

Resonance Raman spectroscopy of the B1u region of benzene: Analysis in terms of pseudo‐Jahn–Teller distortion

1992 ◽  
Vol 96 (4) ◽  
pp. 2617-2628 ◽  
Author(s):  
Roseanne J. Sension ◽  
Richard J. Brudzynski ◽  
Shijian Li ◽  
Bruce S. Hudson ◽  
Francesco Zerbetto ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Resonance Raman Spectroscopy ◽  
Resonance Raman ◽  
Teller Distortion ◽  
Jahn Teller ◽  
Jahn Teller Distortion

Enhancement of the guest orderliness in a low-symmetric perovskite-type metal–organic framework influenced by Jahn–Teller distortion

2018 ◽  
Vol 20 (34) ◽  
pp. 21809-21813 ◽  
Author(s):  
M. Viswanathan
Keyword(s):  
Neutron Diffraction ◽  
Single Crystal ◽  
Metal Organic Framework ◽  
Teller Distortion ◽  
Unusual Effect ◽  
Jahn Teller ◽  
Metal Organic ◽  
Jahn Teller Distortion ◽  
Perovskite Type ◽  
Organic Framework

Single-crystal neutron diffraction reveals an enhancement of the guest-orderliness in a low-symmetric MOF, with an opposite scenario for its high-symmetric cousin. The mechanism behind this unusual effect is proposed.

Effects of Temperature and Magnetic Fields on the Luminescence of Single Crystal (NH4)2TeCl6

1988 ◽  
Vol 43 (6) ◽  
pp. 555-560 ◽  
Author(s):  
K. Meidenbauer ◽  
G. Gliemann
Keyword(s):  
Excited State ◽  
Magnetic Fields ◽  
Single Crystal ◽  
Slow Component ◽  
Excited Electronic State ◽  
Luminescence Spectra ◽  
Teller Distortion ◽  
Field Dependent ◽  
Jahn Teller ◽  
Jahn Teller Distortion

The optical absorption of (NH4)2TeCl6 in acetonitrile at room temperature and the luminescence (spectra, decay curves) of single crystal (NH4)2TeCl6 at 1.9 K ≤ T ≤ 180K and at applied magnetic fields H (0 ≤ H ≤ 6 T) are reported. The temperature dependence of the luminescence indicates the existence of a metastable excited state energetically by ~ 80 cm−1 below a second excited state. With H || <111> the decay curves are monoexponential with magnetic field dependent slopes. H ||<001> yields biexponential decay curves, each composed of a slow component corresponding to the decay at H = 0, and of a field dependent fast component. The experimental results can be explained by effects of a tetragonal Jahn-Teller distortion due to a strong coupling of the excited electronic state 3Tlu of the Te(IV) ions and Eg vibration modes.

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