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Spin-phonon interaction and band effects in the high-Tcsuperconductor HgBa2CuO4

Published in Physical Review. B, Condensed Matter. 2003, vol. 68, p. 172501
Abstract Band calculations show that a stripelike antiferromagnetic spin wave is enforced by a ‘‘half-breathing’’ phonon distortion within the CuO plane of HgBa2CuO4. This spin-phonon coupling is increased further by shear distortion and by the increased distance between Cu and apical oxygens. The effects from spin-phonon coupling are consistent with many observations in high-Tc materials. Spin-phonon coupling can be important for the mechanism of spin fluctuations and superconductivity, although the effects are quantitatively weak when using the local density potential.
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Research group Groupe Giamarchi
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JARLBORG, Thomas N. Spin-phonon interaction and band effects in the high-Tcsuperconductor HgBa2CuO4. In: Physical Review. B, Condensed Matter, 2003, vol. 68, p. 172501. https://archive-ouverte.unige.ch/unige:35775

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Deposited on : 2014-04-16

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