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Semantic Scholar Open Access 2021 15 sitasi

Role of intercalated Cobalt in the electronic structure of Co$_{1/3}$NbS$_2$

P. Popvcevi'c Y. Utsumi I. Biało W. Tabiś M. A. Gala +33 lainnya
Lihat Sumber DOI

Abstrak

(Dated: Co 1 / 3 NbS 2 is the magnetic intercalate of 2H-NbS 2 where electronic itinerant and magnetic prop- erties strongly influence each other throughout the phase diagram. Here we report the angle-resolved photoelectron spectroscopy (ARPES) study in Co 1 / 3 NbS 2 . In agreement with previous reports, the observed electronic structure seemingly resembles the one of the parent material 2H-NbS 2 , with the shift in Fermi energy of 0.5 eV accounting for the charge transfer of approximately two electrons from each Co ion into the NbS 2 layers. However, in addition, and in contrast to previous reports, we observe significant departures that cannot be explained by the rigid band shift accompanied by minor deformation of bands: First, entirely unrelated to the 2H-NbS 2 electronic structure, a shallow electronic band is found crossing the Fermi level near the boundary of the first Brillouin zone of Co 1 / 3 NbS 2 . The evolution of the experimental spectra upon varying the incident photon energy suggests the Co origin of this band. Second, the Nb bonding band, found deeply submerged below the Fermi level at the Γ point, indicates that the interlayer-hybridization is significantly amplified by intercalation, with Co magnetic ions probably acting as strong covalent bridges between NbS 2 layers. The strong hybridization between orbitals that support the itinerant states and the orbitals hosting the local magnetic moments indicates the importance of strong electronic correlations, with the interlayer coupling playing an exquisite role.

Topik & Kata Kunci

Physics

Penulis (38)

P

P. Popvcevi'c

Y

Y. Utsumi

I

I. Biało

W

W. Tabiś

M

M. A. Gala

M

M. Rosmus

J

J. Kolodziej

N

N. Tomaszewska

M

Mariusz Garb

H

H. Berger

I

I. Batisti'c

N

N. Barivsi'c

L

L. Forr'o

E

Eduard Tutivs Institute of Physics

Z

Zagreb

C

Croatia.

I

I. O. Physics

T

Tu Wien

V

Vienna

M

M Austria

A

A. U. O. Science

T

Technology

F

F. O. Physics

A

A. Science

K

Kraków

P

Poland Solaris National synchrotron Radiation Centre

J

J. University

P

P. D. O. Physics

A

Astronomy

P

Poland Laboratory of Physics of Complex Matter

'

'Ecole polytechnique f'ed'erale de Lausanne

L

Lausanne

S

S. D. O. Physics

F

F. Science

U

U. Zagreb

C

Croatia Stavropoulos Center for Complex Quantum Matter

U

U. N. Dame

U

Usa

Format Sitasi

APA MLA BibTeX
Popvcevi'c, P., Utsumi, Y., Biało, I., Tabiś, W., Gala, M.A., Rosmus, M. et al. (2021). Role of intercalated Cobalt in the electronic structure of Co$_{1/3}$NbS$_2$. https://doi.org/10.1103/PhysRevB.105.155114

Akses Cepat

Lihat di Sumber doi.org/10.1103/PhysRevB.105.155114
Informasi Jurnal
Tahun Terbit
2021
Bahasa
en
Total Sitasi
15×
Sumber Database
Semantic Scholar
DOI
10.1103/PhysRevB.105.155114
Akses
Open Access ✓