نتایج جستجو برای: pseudo jahn teller effect pjte

تعداد نتایج: 1689666  

Journal: :Physical review 2022

Chirality-induced spin selectivity (CISS) refers to an ability induce a polarization of electron transmitted through chiral materials. An important experimental observation is that incredibly large realized at room temperature even for organic molecules have weak spin-orbit coupling (SOC), although SOC the only interaction can manipulate electrons' spins in setups. Therefore, mechanism CISS nee...

Journal: :The Journal of Chemical Physics 2005

1998
M. A. Vesaghi A. Shafiekhani

The Jahn-Teller effect used semi-theoretically to analyse UV-visible spectra of the diamond like-carbon films on Si substrates. By deconvolution of UV-visible absorption spectra of the typical films, different absorption lines found. For each sample, six lines which were related to V • by Jahn-Teller effect are distinguished. Our theoretical approach based on distortion of the V • as the conseq...

2000
M. Capone M. Grilli

It is shown that the layered antiferromagnetic order in stoechiometric LaMnO3 cannot be understood purely from electronic interactions. On the contrary, it mainly results from strong cooperative Jahn-Teller deformation. Those involve a compression of the Mn−O octahedron along the c−axis (mode Q3 < 0), while alternate Jahn-Teller deformations occur in the ab−plane (mode Q2). These deformations s...

2009
Francisco Correa Mikhail S. Plyushchay

The origin and nature of a special nonlinear supersymmetry of a reflectionless Pöschl-Teller system are explained by the Aharonov-Bohm effect for a nonrelativistic particle on AdS2. A key role in supersymmetric structure appearing after reduction by a compact generator of the AdS2 isometry is shown to be played by discrete symmetries related to space and time reflections in the ambient Minkowsk...

2003
Zhao-hua Cheng Zhi-hong Wang

Local structure of the Fe-doped La1−xCaxMnO3 (x=0.00-1.00) compounds has been investigated by means of Mössbauer spectroscopy. 57Fe Mössbauer spectra provide a direct evidence of Jahn-Teller distortion in these manganites. On the basis of Mössbauer results, the Jahn-Teller coupling was estimated. It is noteworthy that Ca-concentration dependence of Jahn-Teller coupling strength is very consiste...

1997
A. Lenef S. C. Rand

We present insights into the electronic structure and relaxation of N-V color centers in diamond which support the contention that Jahn-Teller effects may play a very significant role in the excited E state. We also consider several opposing arguments, but show that the unusual relaxation behavior of the N-V center can mask common signatures of the Jahn-Teller effect, and that it remains a stro...

Journal: :Physical chemistry chemical physics : PCCP 2015
Ashim Kumar Saha Gautam Sarma Chung-Hsin Yang Sebastiaan Y T van de Meerakker David H Parker Colin M Western

Rotationally resolved resonance enhanced multiphoton ionisation spectra of the B̃(1)E'' state of NH2D are presented and analysed. The analysis indicates a small (34.9 cm(-1)) lifting of the vibronic degeneracy of the zero point level, approximately equal in sign but opposite in magnitude to the splitting observed in NHD2 in previous work. This observation is consistent with previous measurements...

2008
Assa Auerbach Nicola Manini Erio Tosatti

A simple model for electron-vibron interactions on charged buck-minsterfullerene C 60 n− , n = 1,. .. 5, is solved both at weak and strong couplings. We consider a single H g vibrational multiplet interacting with t 1u electrons. At strong coupling the semiclassical dynamical Jahn-Teller theory is valid. The Jahn-Teller distortions are unimodal for n=1,2,4,5 electrons, and bimodal for 3 electro...

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