Influence of hydrostatic pressure on the Jahn–Teller effect in the 4T2g excited state of CrCl63− doped Cs2NaScCl6

2001 ◽  
Vol 115 (8) ◽  
pp. 3819-3826 ◽  
Author(s):  
Oliver S. Wenger ◽  
Rafael Valiente ◽  
Hans U. Güdel
Keyword(s):  
Excited State ◽  
Hydrostatic Pressure ◽  
Teller Effect ◽  
Jahn Teller ◽  
Jahn Teller Effect

Density-functional investigation of the excited state properties and the Jahn—Teller effect in [CrX6]

1995 ◽  
Vol 91 (3) ◽  
pp. 215
Author(s):  
Khalid Bellafrouh ◽  
Claude Daul ◽  
Hans U. Güdel ◽  
François Gilardoni ◽  
Jacques Weber
Keyword(s):  
Excited State ◽  
Density Functional ◽  
Teller Effect ◽  
Jahn Teller ◽  
Jahn Teller Effect ◽  
Functional Investigation

scholarly journals Strong spin–orbit quenching via the product Jahn–Teller effect in neutral group IV qubits in diamond

2020 ◽  
Vol 5 (1) ◽  
Author(s):  
Christopher J. Ciccarino ◽  
Johannes Flick ◽  
Isaac B. Harris ◽  
Matthew E. Trusheim ◽  
Dirk R. Englund ◽  
...  
Keyword(s):  
Excited State ◽  
Ground State ◽  
Group Iv ◽  
Teller Effect ◽  
Color Centers ◽  
Spin Orbit ◽  
Neutral Group ◽  
Theoretical Understanding ◽  
Jahn Teller ◽  
Jahn Teller Effect

Abstract Artificial atom qubits in diamond have emerged as leading candidates for a range of solid-state quantum systems, from quantum sensors to repeater nodes in memory-enhanced quantum communication. Inversion-symmetric group IV vacancy centers, comprised of Si, Ge, Sn, and Pb dopants, hold particular promise as their neutrally charged electronic configuration results in a ground-state spin triplet, enabling long spin coherence above cryogenic temperatures. However, despite the tremendous interest in these defects, a theoretical understanding of the electronic and spin structure of these centers remains elusive. In this context, we predict the ground-state and excited-state properties of the neutral group IV color centers from first principles. We capture the product Jahn–Teller effect found in the excited state manifold to second order in electron–phonon coupling, and present a nonperturbative treatment of the effect of spin–orbit coupling. Importantly, we find that spin–orbit splitting is strongly quenched due to the dominant Jahn–Teller effect, with the lowest optically-active 3Eu state weakly split into ms-resolved states. The predicted complex vibronic spectra of the neutral group IV color centers are essential for their experimental identification and have key implications for use of these systems in quantum information science.

Jahn–Teller effect in the 4T2g excited state of Cr3+ ion in Cs2NaYF6 crystal

2008 ◽  
Vol 128 (5-6) ◽  
pp. 982-984 ◽  
Author(s):  
C.N. Avram ◽  
M.G. Brik ◽  
N.M. Avram
Keyword(s):  
Excited State ◽  
Teller Effect ◽  
Jahn Teller ◽  
Jahn Teller Effect
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