Thermal, magnetic, and transport properties of single-crystalSr1−xCax

G. Cao

¹

,

S. McCall

²

,

M. Shepard

³

et al.

Muon spin relaxation and susceptibility measurements of an itinerant-electron system Sr1−xCaxRuOGat-Malureanu1, Carlo2, Goko3 et al. 2011Phys. Rev. B21090View full textAdd to dashboardCite

“…The re- sults, shown at the top of Fig. 6, are consistent with those reported in earlier studies 11,26,38,41 . The present results on 1/T 1 are also consistent with the SCR theory, in which the muon spin relaxation time T 1 is related to the uniform susceptibility χ in the following way:…”

Electronic properties of bulk and thin filmSrRuO3: Search for the metal-insulator transition

“…depending on the details of the exchange and correlation functional and the treatment of the core and valence electrons. [22][23][24][25][26][27][28][29][30][31][32][33][34] The reduced calculated magnetic moment in the solid compared to that in the free ion limit is due in part to the large spatial extent of the Ru 4d orbitals, which results in a significant overlap ͑hy-bridization͒ with the oxygen 2p. Furthermore, due to the metallic character of SRO, an overlap of the majority and minority Ru 4d bands occurs at the Fermi level; as a result partial occupation of the minority band also leads to a reduced magnetic moment.…”

“…Many experimental studies have already addressed the degree of electron-electron correlation in SrRuO 3 including x-ray and ultraviolet photoemission spectroscopy, [18][19][20][21] specific-heat measurements, 22 infrared and optical conductivity measurements, 23 and transport experiments. 24 For example, Kim and co-workers 19 use x-ray photoemission spectroscopy ͑XPS͒ to identify how such correlations change within the ruthenate family, and Toyota et al 18 use photoemission spectroscopy ͑PES͒ to detail the metal-insulator transition in SrRuO 3 as a function of film thickness concomitant with the onset of magnetism. In all of these studies, the general consensus is that electron correlation effects do play a role in determining the electronic structure of this itinerant ferromagnet, but to what degree remains unclear.…”

Local conductance spectra of itinerant ferromagnetic SrRuO3 through break junction

“…In this case, the values of the mean free path l of the sample are estimated to be which shows a similar resistivity to the present sample, was also estimated to be in the range of only 0.2-0.3 nm. 13) Figures 2(a) and 2(b) show a wide range of differential conductance spectra (dI/dV -V) from the SrRuO 3 sample S1 at temperatures of 77 K (T < T C ) and 200 K (T > T C ), respectively. The spectra show peak or dip structures at approximately zero bias voltage at 77 K (T < T C ), while they are almost constant at 200 K (T > T C ).…”