Published July 14, 2014 | Version v1
Journal article Metadata-only

Antiferromagnetic resonance excitation by terahertz magnetic field resonantly enhanced with split ring resonator

Creators

  • 1. Department of Physics, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502 (Japan)
  • 2. CREST, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012 (Japan)
  • 3. Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Sakyo-ku, Kyoto 606-8501 (Japan)
  • 4. Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510 (Japan)

Description

Excitation of antiferromagnetic resonance (AFMR) in a HoFeO3 crystal combined with a split ring resonator (SRR) is studied using terahertz (THz) electromagnetic pulses. The magnetic field in the vicinity of the SRR is induced by the incident THz electric field component and excites spin oscillations that correspond to the AFMR, which are directly probed by the Faraday rotation of the polarization of a near-infrared probe pulse. The good agreement of the temperature-dependent magnetization dynamics with the calculation using the two-lattice Landau-Lifshitz-Gilbert equation confirms that the AFMR is excited by the THz magnetic field, which is enhanced at the SRR resonance frequency by a factor of 20 compared to the incident magnetic field.

Additional details

Identifiers

DOI
10.1063/1.4890475;

Publishing Information

Journal Title
Applied Physics Letters
Journal Volume
105
Journal Issue
2
Journal Page Range
p. 022410-022410.5
ISSN
0003-6951
CODEN
APPLAB

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
46017262
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
ANTIFERROMAGNETISM; COMPUTERIZED SIMULATION; CRYSTALS; ELECTRIC FIELDS; ELECTROMAGNETIC PULSES; EQUATIONS; EXCITATION; FARADAY EFFECT; FERRITES; HOLMIUM COMPOUNDS; MAGNETIC FIELDS; MAGNETIZATION; OSCILLATIONS; POLARIZATION; RESONANCE; RESONATORS; SPIN; TEMPERATURE DEPENDENCE
Descriptors DEC
ANGULAR MOMENTUM; ELECTROMAGNETIC RADIATION; ELECTRONIC EQUIPMENT; ENERGY-LEVEL TRANSITIONS; EQUIPMENT; FERRIMAGNETIC MATERIALS; IRON COMPOUNDS; MAGNETIC MATERIALS; MAGNETISM; MATERIALS; OXYGEN COMPOUNDS; PARTICLE PROPERTIES; PULSES; RADIATIONS; RARE EARTH COMPOUNDS; SIMULATION; TRANSITION ELEMENT COMPOUNDS

Optional Information

Notes
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