Systematic absences of optical phonon modes in phonon dispersion measured by electron microscopy

A Li, PM Zeiger, Z He, M Xu, SJ Pennycook, J Rusz… - Physical Review Letters, 2024 - APS
Phonon dispersion relations are widely used to elucidate the vibrational properties of
materials. As an emerging technique, momentum-resolved vibrational spectroscopy in …

Vibrational Hamiltonian of tetrachloro-, tetrafluoro-, and mono-silanes using U (2) Lie algebras

V Jaliparthi, MR Balla - Spectrochimica Acta Part A: Molecular and …, 2022 - Elsevier
In this paper, we have applied the symmetry adapted one-dimensional framework of the U
(2) Lie algebras to estimate the vibrational frequencies of tetrachloro-, tetrafluoro-, and mono …

A comparative study of the vibrational spectra of OCS and HCP using the Lie algebraic method

NK Sarkar, J Choudhury, SR Karumuri… - The European Physical …, 2009 - Springer
A comparative study of the vibrational spectra of OCS and HCP using the Lie algebraic method
Page 1 Eur. Phys. J. D 53, 163–171 (2009) DOI: 10.1140/epjd/e2009-00094-8 Regular Article …

U (2) algebraic model applied to vibrational spectra of Nickel Metalloporphyrins

SR Karumuri, NK Sarkar, J Choudhury… - Journal of Molecular …, 2009 - Elsevier
In this paper the highly excited stretching and bending vibrational energy levels of some
Nickel Metalloporphyrin molecules are studied by U (2) algebraic model. Its application to …

Phase transitions of carbon tetrachloride under static and dynamic pressures

C Yuan, X Zhang, L Zhou, H Li, S Feng, K Yang… - Journal of Molecular …, 2021 - Elsevier
The phase transitions of carbon tetrachloride under static and dynamic compression were
measured by high-pressure Raman spectroscopy. Under a static compression of up to 10 …

Vibrational spectroscopy of CH/CD stretches in propadiene: An algebraic approach

J Choudhury, NK Sarkar, SR Karumuri… - Chinese Physics …, 2009 - iopscience.iop.org
Abstract Using Hamiltonian based on Lie algebraic method, the stretching vibrational modes
of C 3 H 4 and C 3 D 4 molecules are calculated up to higher overtones. The model appears …

Vibrational spectra of nickel metalloporphyrins: An algebraic approach

SR Karumuri, J Choudhury, NK Sarkar… - Pramana, 2009 - Springer
One of the most interesting areas of current research in molecular physics is the study of the
vibrationally excitated states of medium and large molecules. In view of the considerable …

Vibrational spectroscopy of C m -C/C b -C b stretching vibrations of …

SR Karumuri, J Choudhury, NK Sarkar… - Pramana, 2010 - Springer
Using Lie algebraic techniques and simpler expressions of the matrix elements of Majorana
and Casimir operators given by us, we obtain an effective Hamiltonian operator which …

Vibrational spectroscopy of stretching and bending modes of nickel tetraphenyl porphyrin: An algebraic approach

SR Karumuri, J Choudhury, NK Sarkar… - Chinese Physics …, 2009 - iopscience.iop.org
Vibrational Spectroscopy of Stretching and Bending Modes of Nickel Tetraphenyl Porphyrin:
an Algebraic Approach Page 1 Chinese Physics Letters Vibrational Spectroscopy of Stretching …

Spectroscopic studies on distorted structure molecules by using U (2) Lie algebraic method

SR Karumuri, JV Sekhar, V Sreeram… - Journal of Molecular …, 2011 - Elsevier
Resonance Raman spectra of oxygenated and deoxygenated functional erythrocytes are
calculated by using Lie algebraic technique at 785nm. The results are obtained by this …