Time-Resolved Kerr Rotation Spectroscopy of Spin Dynamics in a Quantum Hall System

Journal Article · Mon Jan 04 04:00:00 EST 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3295390· OSTI ID:21371398

Fukuoka, D; Tanaka, N; Oto, K; Muro, K ^[1]; Hirayama, Y ^[2]; Kumada, N; Yamaguchi, H ^[3]

---

1. Graduate School of Science, Chiba University, Chiba-shi, Chiba 263-8522 (Japan)
2. Graduate School of Science, Tohoku University, Sendai-shi, Miyagi 980-8577 (Japan)
3. NTT Basic Research Laboratories, NTT Corporation, Atsugi-shi, Kanagawa 243-0198 (Japan)

A Time-resolved Kerr rotation spectroscopy under selective excitation by narrow spectrum pump beam is applied to high-mobility two dimensional (2D) electrons. The large non-oscillating Kerr signal is ascribed to the formation of Skyrmions by photoexcited carrier, and is confirmed by the selective excitation in TRKR measurement. The collapse of the spin coherence (dip of T{sub 2}*) near nu = 1 may be related by the formation of Skyrmions and anti-Skyrmiosn pair under photoexcitation.

• OSTI ID: 21371398
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1199; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANGULAR MOMENTUM
CARRIER MOBILITY
DIELECTRIC PROPERTIES
ELECTRICAL PROPERTIES
ELECTRO-OPTICAL EFFECTS
ELECTRONS
ELEMENTARY PARTICLES
ENERGY-LEVEL TRANSITIONS
EXCITATION
FERMIONS
HALL EFFECT
KERR EFFECT
LEPTONS
MOBILITY
MOTION
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
QUASI PARTICLES
RESOLUTION
ROTATION
SOLITONS
SPIN
TIME RESOLUTION
TIMING PROPERTIES