Identifying the distinct phases of THz waves from K-valley electrons in graphite

Journal Article · Wed Dec 04 00:00:00 EST 2013 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4848315· OSTI ID:22261755

Irfan, Muhammad; Yim, Jong-Hyuk; Jho, Young-Dahl ^[1]; Kim, Changyoung ^[2]

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1. School of Info. and Comm., Gwangju Institute of Science and Technology, Gwangju 500-712 (Korea, Republic of)
2. Institute of Physics and Applied physics, Yonsei University, Seoul 120-749 (Korea, Republic of)

The polarity change of THz electromagnetic waves radiated from single-crystalline graphite and polycrystalline graphite films has been studied to identify the main generation mechanism in conventional reflective THz time-domain spectroscopy scheme. The excitation wavelength variation around the K-valley produces no significant changes in THz field strength. We further found that THz waves become fully dispersed without polarity change in lateral detection geometry.

• OSTI ID: 22261755
• Journal Information: AIP Conference Proceedings, Vol. 1566, Issue 1; Conference: ICPS 2012: 31. international conference on the physics of semiconductors, Zurich (Switzerland), 29 Jul - 3 Aug 2012; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
DETECTION
ELECTROMAGNETIC RADIATION
ELECTRONS
EXCITATION
FILMS
GRAPHITE
MONOCRYSTALS
POLYCRYSTALS
SPECTROSCOPY
WAVELENGTHS