Selective excitation of spin resonance in orthoferrite PrFeO{sub 3} with impulsive polarized terahertz radiation

Journal Article · Sat Dec 28 04:00:00 EST 2013 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4858430· OSTI ID:22267758

Song, Gaibei; Jiang, Junjie; Wang, Xinyan; Jin, Zuanming; Lin, Xian; Ma, Guohong; Cao, Shixun ^[1]

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1. Department of Physics, Shanghai University, Shanghai 200444 (China)

Single cycle terahertz (THz) pulses were employed to excite coherent spin waves in (110)-oriented PrFeO{sub 3} single crystal. The free induction decay radiations at frequency of 0.34 THz (quasi-ferromagnetic mode, FM mode) and 0.41 THz (quasi-antiferromagnetic mode, AFM mode) were observed arising from the coupling of magnetic moment with the impulsive magnetic field of polarized terahertz radiation. These two spin modes in PrFeO{sub 3} can be excited and modulated by the magnetic field of THz pulse with a specific polarization with respect to the crystal axis. The extracted complex dielectric permittivity and magnetic permeability dispersion in THz range suggest a higher efficiency of energy transfer from the impulsive THz pulse into the AFM than the FM spin system.

• OSTI ID: 22267758
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 24 Vol. 114; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANTIFERROMAGNETISM
ATOMIC FORCE MICROSCOPY
DIELECTRIC MATERIALS
ENERGY TRANSFER
EXCITATION
MAGNETIC FIELDS
MAGNETIC MOMENTS
MAGNETIC SUSCEPTIBILITY
MONOCRYSTALS
PERMITTIVITY
PULSES
RESONANCE
SPIN
SPIN WAVES
THZ RANGE