Spin-phonon coupling in ZnCr2Se4

Details Spin-phonon coupling in ZnCr2Se4 Spin-phonon coupling in ZnCr2Se4

2006-11-02

arxiv.org/abs/cond-mat/0611041v1

Phys. Rev. B 75, 052410 (2007)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 4 figures

Scientific paper

10.1103/PhysRevB.75.052410

Spin-phonon coupling and magnetodielectric effects of ZnCr2Se4 were investigated by means of infrared (IR) spectroscopy as a function of temperature and magnetic field. ZnCr2Se4 is dominated by ferromagnetic exchange but undergoes antiferromagnetic order at T = 21 K. In the magnetically ordered phase the low-frequency IR active phonon splits, indicating strong dynamic anisotropy via magnetic exchange interactions. Antiferromagnetic order and concomitantly the phonon splitting is wiped out by external magnetic fields. Hence, ZnCr2Se4 is a prominent example of a spin-driven Jahn-Teller effect which can be fully suppressed in external magnetic fields.

Affiliated with

Also associated with

No associations

Rating

Spin-phonon coupling in ZnCr2Se4 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Spin-phonon coupling in ZnCr2Se4, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spin-phonon coupling in ZnCr2Se4 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-291751