Anisotropy in thermal expansion of La2−xSrxCuO4

Electron-phonon interaction inLa2−xSrxCuONimori1, Sakita2, Nakamura3 et al. 2000Phys. Rev. B14180View full textAdd to dashboardCite

“…The feature at around 3 GPa is probably due to the structural change from the orthorhombic to the tetragonal phase. According to the reported P measurements, 14,15 the observed T d ϳ270 K can be suppressed by Pу3 GPa. Indeed, a change in the slope of the c (T) curve, which is clear at around T d ϳ270 K under ambient P, is completely suppressed by applying Pу3 GPa.…”

“…12 Moreover, T c in LSCO is suppressed by the orthorhombicity. 13 It has been reported that T d in LSCO can be suppressed by applying high P. 14,15 Therefore we have focused on a high-P experiment on LSCO to determine the relationship between c (T) and T c regardless of the influence of the structural transition.…”

Hints for the nematic pseudogap in the nearly optimally doped La2−xSrxCuO4 superconductor

“…We would like to mention that we do not expect domain walls to play an important role in determining the in-plane anisotropy, since our sample at a uniaxial pressure of P ≈ 15 MPa should be mostly detwinned. Early results of x-ray diffraction measurements on stressed La 2-x Sr x CuO 4 single crystals showed that for P = 1.5 and 1.8 MPa the detwinning ratio was about 90% [45] and 76% [46], respectively.…”

Pressure dependence of out-of-plane conduction inLa2−xSrNakamura1, Kodama2, Sakita3 et al. 1996Phys. Rev. BSelf Cite13040View full textAdd to dashboardCite

“…Our thermal expansion study 14 LSCO crystals with the tetragonal ͗110͘ direction along the rod were grown by a traveling-solvent floating-zone method. 16 The Sr concentration of the crystals used in this work is xϭ0.145, as determined by electron-probe microanalysis.…”