On the quantum nature of charge carriers in the pseudogap state of underdoped cuprate high- superconductors
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Phase diagram of the pseudogap state of underdoped cuprate HTSC.2,18–20 The pseudogap state of single crystals is bounded by the lines , , and (Ref. 20; ●) and the line of the transition in to a cluster spin glass state . It is constructed with the use of the dependence found in Eq. (12) (it was constructed according to the points ◉). The line was drawn through the origin of coordinates and the point with (, ; Fig. 4 of Ref. 20); the points ∎ are from Ref. 2 for polycrystalline compounds; ★ shows the results of observation of the thermal motion of localized vortices at and upon simultaneous action of thermal and Lorentz forces18 on the LaSr-214 single crystal with at . The results of an observation of the Nernst effect19 at in the single crystal (◻); (∎); (엯) are the proposed values of the temperature for at the corresponding values of .
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