Electron-phonon and magnetoelastic interactions in ferromagnetic Co[N(CN)2]2

T V Brinzari; J T Haraldsen; P Chen; Q-C Sun; Y Kim; L-C Tung; A P Litvinchuk; J A Schlueter; D Smirnov; J L Manson; J Singleton; J L Musfeldt

doi:10.1103/PhysRevLett.111.047202

Electron-phonon and magnetoelastic interactions in ferromagnetic Co[N(CN)2]2

Phys Rev Lett. 2013 Jul 26;111(4):047202. doi: 10.1103/PhysRevLett.111.047202. Epub 2013 Jul 24.

Authors

T V Brinzari¹, J T Haraldsen, P Chen, Q-C Sun, Y Kim, L-C Tung, A P Litvinchuk, J A Schlueter, D Smirnov, J L Manson, J Singleton, J L Musfeldt

Affiliation

¹ Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, USA.

PMID: 23931402
DOI: 10.1103/PhysRevLett.111.047202

Abstract

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.