Near-infrared transitions in iron-based diluted magnetic semiconductors: Effect of strong electron-phonon coupling

1994 ◽  
Vol 49 (4) ◽  
pp. 2408-2417 ◽  
Author(s):  
Vincenzo Savona ◽  
Franco Bassani ◽  
Sergio Rodriguez
Keyword(s):  
Diluted Magnetic Semiconductors ◽  
Near Infrared ◽  
Magnetic Semiconductors ◽  
Phonon Coupling ◽  
Strong Electron ◽  
Electron Phonon Coupling ◽  
Iron Based ◽  
Diluted Magnetic

scholarly journals Observation of the polaronic character of excitons in a two-dimensional semiconducting magnet CrI3

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Wencan Jin ◽  
Hyun Ho Kim ◽  
Zhipeng Ye ◽  
Gaihua Ye ◽  
Laura Rojas ◽  
...  
Keyword(s):  
Magnetic Semiconductors ◽  
Longitudinal Optical ◽  
Longitudinal Optical Phonon ◽  
Two Dimensional ◽  
Phonon Coupling ◽  
Temperature Dependent ◽  
Strong Electron ◽  
Range Magnetic Order ◽  
Electron Phonon Coupling ◽  
Long Range Magnetic Order

Abstract Exciton dynamics can be strongly affected by lattice vibrations through electron-phonon coupling. This is rarely explored in two-dimensional magnetic semiconductors. Focusing on bilayer CrI3, we first show the presence of strong electron-phonon coupling through temperature-dependent photoluminescence and absorption spectroscopy. We then report the observation of periodic broad modes up to the 8th order in Raman spectra, attributed to the polaronic character of excitons. We establish that this polaronic character is dominated by the coupling between the charge-transfer exciton at 1.96 eV and a longitudinal optical phonon at 120.6 cm−1. We further show that the emergence of long-range magnetic order enhances the electron-phonon coupling strength by ~50% and that the transition from layered antiferromagnetic to ferromagnetic order tunes the spectral intensity of the periodic broad modes, suggesting a strong coupling among the lattice, charge and spin in two-dimensional CrI3. Our study opens opportunities for tailoring light-matter interactions in two-dimensional magnetic semiconductors.

Magnetic anisotropy of cubic iron-based diluted magnetic semiconductors

1991 ◽  
Vol 43 (4) ◽  
pp. 3443-3449 ◽  
Author(s):  
Murielle Villeret ◽  
Sergio Rodriguez ◽  
E. Kartheuser
Keyword(s):  
Magnetic Anisotropy ◽  
Diluted Magnetic Semiconductors ◽  
Magnetic Semiconductors ◽  
Iron Based ◽  
Diluted Magnetic

Magnetic Anisotropy of Cubic Iron-Based Diluted Magnetic Semiconductors

1991 ◽  
Vol T39 ◽  
pp. 131-134 ◽  
Author(s):  
Sergio Rodriguez ◽  
Murielle Villeret ◽  
E Kartheuser
Keyword(s):  
Magnetic Anisotropy ◽  
Diluted Magnetic Semiconductors ◽  
Magnetic Semiconductors ◽  
Iron Based ◽  
Diluted Magnetic

Magnetic properties of iron-based diluted magnetic semiconductors

1990 ◽  
Vol 75 (1) ◽  
pp. 21-24 ◽  
Author(s):  
Murielle Villeret ◽  
Sergio Rodriguez ◽  
Edouard Kartheuser
Keyword(s):  
Magnetic Properties ◽  
Diluted Magnetic Semiconductors ◽  
Magnetic Semiconductors ◽  
Iron Based ◽  
Diluted Magnetic

scholarly journals Magnetization steps in iron-based diluted magnetic semiconductors

1990 ◽  
Vol 41 (10) ◽  
pp. 7330-7333 ◽  
Author(s):  
H. J. M. Swagten ◽  
C. E. P. Gerrits ◽  
A. Twardowski ◽  
W. J. M. de Jonge
Keyword(s):  
Diluted Magnetic Semiconductors ◽  
Magnetic Semiconductors ◽  
Iron Based ◽  
Diluted Magnetic

scholarly journals A CaAl 2 Si 2 -Type Magnetic Semiconductor (Sr, Na)(Zn, Mn)2Sb2 Isostructural to 122-Type Iron-Based Superconductors

2022 ◽  
Vol 2022 ◽  
pp. 1-7
Author(s):  
Yilun Gu ◽  
Rufei Zhang ◽  
Haojie Zhang ◽  
Licheng Fu ◽  
Guoxiang Zhi ◽  
...  
Keyword(s):  
Curie Temperature ◽  
Diluted Magnetic Semiconductors ◽  
Magnetic Semiconductors ◽  
Diluted Magnetic Semiconductor ◽  
Parent Compound ◽  
Magnetic Semiconductor ◽  
Magnetic Ordering ◽  
Iron Based ◽  
Diluted Magnetic ◽  
Formula Type

A new diluted magnetic semiconductor (Sr, Na)(Zn, Mn)2Sb2 has been successfully synthesized by doping Na and Mn into the parent compound SrZn 2 Sb 2 , which has a CaAl 2 Si 2 -type crystal structure (space group P 3 ¯ m 1 , No. 164, h P 5 ) isostructural to the 122-type iron-based superconductor CaFe 2 As 2 . No magnetic ordering has been observed when only spins are doped by (Zn, Mn) substitution. Only with carriers codoped by (Sr, Na) substitution, a ferromagnetic ordering occurs below the maximum Curie temperature T C ∼9.5 K. Comparing with other CaAl 2 Si 2 -type diluted magnetic semiconductors, we will show that negative chemical pressure suppresses the Curie temperature.

THE MAGNETIC PROPERTIES OF II-VI GROUP Fe-TYPE DILUTED MAGNETIC SEMICONDUCTORS

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-873-C8-874
Author(s):  
H. J. M. Swagten ◽  
A. Twardowski ◽  
F. A. Arnouts ◽  
W. J. M. de Jonge ◽  
M. Demianiuk
Keyword(s):  
Magnetic Properties ◽  
Diluted Magnetic Semiconductors ◽  
Magnetic Semiconductors ◽  
Diluted Magnetic
Sign in / Sign up

Export Citation Format

Share Document