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Title: Entropic origin of pseudogap physics and a mott-slater transition in cuprates
Authors: Markiewicz, R.S
Buda, I.G
Mistark, P
Lane, C
Bansil, A 
Keywords: family
Issue Date: 2017
Publisher: Nature Publishing Group
Citation: Markiewicz, R.S, Buda, I.G, Mistark, P, Lane, C, Bansil, A (2017). Entropic origin of pseudogap physics and a mott-slater transition in cuprates. Scientific Reports 7 : 44008. ScholarBank@NUS Repository.
Rights: Attribution 4.0 International
Abstract: We propose a new approach to understand the origin of the pseudogap in the cuprates, in terms of bosonic entropy. The near-simultaneous softening of a large number of different q-bosons yields an extended range of short-range order, wherein the growth of magnetic correlations with decreasing temperature T is anomalously slow. These entropic effects cause the spectral weight associated with the Van Hove singularity (VHS) to shift rapidly and nearly linearly toward half filling at higher T, consistent with a picture of the VHS driving the pseudogap transition at a temperature ?T?. As a byproduct, we develop an order-parameter classification scheme that predicts supertransitions between families of order parameters. As one example, we find that by tuning the hopping parameters, it is possible to drive the cuprates across a transition between Mott and Slater physics, where a spin-frustrated state emerges at the crossover. © The Author(s) 2017.
Source Title: Scientific Reports
ISSN: 2045-2322
DOI: 10.1038/srep44008
Rights: Attribution 4.0 International
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