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Formation of CuO2 s...
Formation of CuO2 sublattices by suppression of interlattice correlations in tetragonal CuO
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- Bramberger, Max (författare)
- Ludwig-Maximilian University of Munich
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- Bacq-Labreuil, Benjamin (författare)
- The French National Centre for Scientific Research (CNRS)
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- Grundner, Martin (författare)
- Ludwig-Maximilian University of Munich
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- Biermann, Silke (författare)
- Lund University,Lunds universitet,Matematisk fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Mathematical Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,The French National Centre for Scientific Research (CNRS),College de France
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- Schollwöck, Ulrich (författare)
- Ludwig-Maximilian University of Munich
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- Paeckel, Sebastian (författare)
- Ludwig-Maximilian University of Munich
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- Lenz, Benjamin (författare)
- Paris-Sorbonne University
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(creator_code:org_t)
- 2023
- 2023
- Engelska.
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Ingår i: SciPost Physics. - 2542-4653. ; 14:1
- Relaterad länk:
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http://dx.doi.org/10... (free)
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https://lup.lub.lu.s...
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https://doi.org/10.2...
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Abstract
Ämnesord
Stäng
- We investigate the tetragonal phase of the binary transition metal oxide CuO (t-CuO) within the context of cellular dynamical mean-field theory. Due to its strong antiferromagnetic correlations and simple structure, analysing the physics of t-CuO is of high interest as it may pave the way towards a more complete understanding of high-temperature superconductivity in hole-doped antiferromagnets. In this work we give a formal justification for the weak-coupling assumption that has previously been made for the interconnected sublattices within a single layer of t-CuO by studying the non-local self-energies of the system. We compute momentum-resolved spectral functions using a Matrix Product State (MPS)-based impurity solver directly on the real axis, which does not require any numerically ill-conditioned analytic continuation. The agreement with photoemission spectroscopy indicates that a single-band Hubbard model is sufficient to capture the material’s low energy physics. We perform calculations on a range of different temperatures, finding two magnetic regimes, for which we identify the driving mechanism behind their respective insulating state. Finally, we show that in the hole-doped regime the sublattice structure of t-CuO has interesting consequences on the symmetry of the superconducting state.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
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