Erratum: Effect of chemical pressure on the charge density wave transition in rare-earth tritelluridesRTe3[Phys. Rev. B77, 035114 (2008)]

Tuning the charge density wave and superconductivity inCuxTaS2

“…6a), the M(H) isotherms are linear in H, as expected for a BCS type II superconductor; we estimate the H c1 values, marked by vertical arrows, from the points where these curves deviate from linearity. The CDW transition in 2H-TaS 2 has been observed previously in single crystals through resistivity measurements (21,27,28), and though it is observable through subtle changes in susceptibility and resistivity in our undoped polycrystalline 2H-TaS 2 sample, we found that for the Cu x TaS 2 system even 1 % doping made the transition more difficult to observe. It was below our detection limits in both resistivity and susceptibility measurements, but was observable through Seebeck coefficient measurements.…”

Pressure-induced Fermi-surface reconstruction in the iron-arsenide superconductor Ba1−xKxFeHassinger1, Gredat2, Valade3 et al. 2012Phys. Rev. B578351View full textAdd to dashboardCite

“…17 This is interpreted as follows: as the first gap, ∆ 1 , decreases, more of the Fermi surface remains after reconstruction below T c1 and so more of it can take part in the nesting at Q 2 , thus producing a stronger gap ∆ 2 , and hence a larger T c2 . 17 The fact that T N and T 0 go in opposite directions with pressure in Ba 1−x K x Fe 2 As 2 suggests a similar picture. The first spin-density wave orders below T N with Q 1 = (π, 0) (within a given orthorhombic domain), causing two of the four electron pockets in the Fermi surface to reconstruct.…”

Charge transfer and multiple density waves in the rare earth tellurides

“…Recently, a second CDW state was discovered in some members of the RTe 3 family for R= Tm, Er, Ho, and Dy at ambient pressure [14]. Although TbTe 3 is the nearest neighbor to DyTe 3 in the RTe 3 series, previous x-ray diffraction and electrical transport experiments at ambient pressure [14] as well as pump-probe spectroscopy [20] did not reveal a second CDW in this material.…”

“…Most physical realizations of nesting exist in solids with large anisotropy so as to allow lower dimensional features to develop at the Fermi surface. The layered metal-chalcogenide family has served as the historical prototype for a rich catalogue of low-dimensional charge-density-wave phenomena [5][6][7][8][9][10][11][12][13][14][15]. The rare earth tritelluride RTe 3 series (R=La to Tm) [10,13,14,[16][17][18][19][20][21][22][23][24][25][26] has emerged more recently as materials with extremely pliable Fermi surfaces [11] that permit multiple long-wavelength distortions, from CDW to magnetic order to superconductivity, separated by orders of magnitude in their energy scales [22].…”