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Spin-orbit and lattice coupling dynamics properties on enhanced Raman shift of perovskite films by resonance magnetic phase microscopy

REN R.1,* , YJ REN1, XUAN LI1, ZHONGXIA ZHAO1, DANAN R.1, RUIQI LU1

Affiliation

  1. Department of optics inf., Xi’an Jiao Tong University, Xian 710054, China

Abstract

The distinct Raman active phonon s in orthorhombic LSMO films heterojunctions were present by Raman spectr oscopy of 325 nm and 512nm laser by the spin orbit lattice dependence of frequency performances in scattering configurations. The resul ts show that high frequency mode structure and the perovskite symmetry phonon peaks is caused by anomalies tilt of Mn O 6 octahedron . The spin orbit transfer of d x2y2 orbits dynamics is based on crystal structure stabilized d 3z2 r 2 orbit. The dynamics energ y gain achieved by the ferro orbital ordering, strong crystal field , spin orbital competition a nd charge order of energy band splitting. The LSMO/ZnO junction display excellent junction behavior over the temperature range of 77 300 K and exhibit the strong crystal field and orbital canting.

Keywords

Junction magnetoresistance, Spin-orbit, Carrier injection, MIT transition, Raman shift.

Citation

REN R., YJ REN, XUAN LI, ZHONGXIA ZHAO, DANAN R., RUIQI LU, Spin-orbit and lattice coupling dynamics properties on enhanced Raman shift of perovskite films by resonance magnetic phase microscopy, Optoelectronics and Advanced Materials - Rapid Communications, 9, 11-12, November-December 2015, pp.1453-1457 (2015).

Submitted at: May 14, 2015

Accepted at: Oct. 28, 2015