Electron-phonon and magnetoelastic interactions in ferromagnetic Co[N(CN)2]2.
We combined Raman and infrared vibrational spectroscopies with complementary lattice dynamics calculations and magnetization measurements to reveal the dynamic aspects of charge-lattice-spin coupling in Co[N(CN)2]2. Our work uncovers electron-phonon coupling as a magnetic field-driven avoided crossing of the low-lying Co2+ electronic excitation with two ligand phonons and a magnetoelastic effect that signals a flexible local CoN6 environment. Their simultaneous presence indicates the ease with which energy is transferred over multiple length and time scales in this system.
Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, USA.
T V
TV
Brinzari
J T
JT
Haraldsen
P
P
Chen
Q-C
QC
Sun
Y
Y
Kim
L-C
LC
Tung
A P
AP
Litvinchuk
J A
JA
Schlueter
D
D
Smirnov
J L
JL
Manson
J
J
Singleton
J L
JL
Musfeldt