Electronic structure of CrxTi1−xX2, X=S, Se solid solutions

Studying the heterogeneity of the CrxTi1-xCh2 (Ch = S, Se) single crystals using X-ray scanning photoemission microscopy

“…One of the promising areas of practical use of LTMDs is the spintronics [25][26][27][28][29]. Solid solutions of CrxTi1-xCh2 (Ch = S, Se) are suitable for this purpose, as evidenced both by theoretical [30,31] and experimental [32][33][34] studies. Particularly, our previous study confirmed a 100% spin polarization in the CrxTi1-xSe2 at x > 0.75 [32].…”

“…Solid solutions of CrxTi1-xCh2 (Ch = S, Se) are suitable for this purpose, as evidenced both by theoretical [30,31] and experimental [32][33][34] studies. Particularly, our previous study confirmed a 100% spin polarization in the CrxTi1-xSe2 at x > 0.75 [32]. To map the Fermi surface and electronic band structure of these materials, we need to measure the angle-resolved photoemission spectra (ARPES).…”

Electronic and Crystal Structure of New CrxZrSe2 Intercalation Compounds

“…Being placed in the tetra-position, the Cr atoms are prevented from the formation of such a hybrid band. Another important feature of the Cr 2p spectrum (Figure c) is a 1 eV splitting of the Cr 2p 3/2 peak indicating the spin polarization of the Cr 3d-states . However, the Cr 2p spectrum is substantially broadened as compared to that for Cr x TiSe 2 .…”

“…Another important feature of the Cr 2p spectrum (Figure 2c) is a 1 eV splitting of the Cr 2p 3/2 peak indicating the spin polarization of the Cr 3d-states. 15 However, the Cr 2p spectrum is substantially broadened as compared to that for Cr x TiSe 2 . This broadening cannot be explained in terms of the distribution of Cr atoms between octa-and tetra-positions, because fitting of the Cr 2p 3/2 spectrum with one 1 eV-splitted doublet is much better than that with two doublets.…”

“…In this case, the Fermi level is located within the hybrid band. Since the Cr 3d-states retain their spin splitting, , it is possible to obtain materials with spin-polarized states at the Fermi level.…”