2013
DOI: 10.1103/physrevb.88.165430
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Interplay between Coulomb and Jahn-Teller effects in icosahedral systems with triplet electronic states coupled toh-type vibrations

Abstract: We will consider the role played by electron-vibration and electron-electron interactions, through Jahn-Teller (JT) and Coulomb interactions, respectively, in icosahedral systems in which triplet electronic states are coupled to h g -type vibrations. Starting from the electronic terms that arise from consideration of Coulomb interactions, we introduce JT couplings both within the terms and between nondegenerate terms. We show how the symmetry of the JT distortion can change when extra electrons are added, and … Show more

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Cited by 9 publications
(9 citation statements)
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“…Indeed, at any instant in time, the C 60 cage of an isolated fullerene ion will be distorted due to the dynamic JT effect. 9,[48][49][50][51][52][53] However, while the instantaneous symmetry is lowered, the C 60 cage will interconvert between equivalent minima on a rapid timescale (the order of pico to femto seconds 54 ). It seems unlikely that the water molecule would be able to follow the distortions on this timescale such that it 'sees' the distorted geometry.…”
Section: Discussionmentioning
confidence: 99%
“…Indeed, at any instant in time, the C 60 cage of an isolated fullerene ion will be distorted due to the dynamic JT effect. 9,[48][49][50][51][52][53] However, while the instantaneous symmetry is lowered, the C 60 cage will interconvert between equivalent minima on a rapid timescale (the order of pico to femto seconds 54 ). It seems unlikely that the water molecule would be able to follow the distortions on this timescale such that it 'sees' the distorted geometry.…”
Section: Discussionmentioning
confidence: 99%
“…where Ĥbi is the bielectronic part, Ĥ0 is the Hamiltonian of the harmonic oscillators of all JT active h g modes, and ĤJT is the linear vibronic coupling term [32][33][34][35]. The analysis including the quadratic vibronic coupling [53,54] with the coupling parameters for C n− 60 anions will be presented elsewhere. Ĥ0 is written as…”
Section: Vibronic and Electronic Interactions In C N− 60mentioning
confidence: 99%
“…The discovery also raises a question of how the strong Coulomb repulsion can be compatible with the s ‐wave superconductivity which suggests a finite onsite pairing amplitude. This fundamental question has triggered an active discussion from both experimental and theoretical sides …”
Section: Introductionmentioning
confidence: 99%