Effective Landé g-factor in the $\upsilon = 1$ quantum hall system = Filling factor $\upsilon = 1$ 인 양자홀 계의 유효 Landé g-factor $(g^{*})$에 관한 연구

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We calculate the effective g factor ($g^*$) in the υ=1 quantum Hall system based on a skyrmion-antiskyrmion pair excitation, and compare the result with that obtained from a quasihole-quasiparticle excitation. Using the Hartree-Fock approach on the Haldane``s sphere geometry, we find that $g^*$ is significantly lowered due to the Coulomb interaction between reversed spins. Since our excitation gap is still overestimated, our calculated value of 2.55 at 7.7 T is suggested to be an upper limit for $g^*$. Our results are used to explain the temperature dependence of electron spin polarization observed by optically pumped nuclear magnetic resonance measurements.
Advisors
Chang, Kee-Jooresearcher장기주researcher
Description
한국과학기술원 : 물리학과,
Publisher
한국과학기술원
Issue Date
1997
Identifier
112626/325007 / 000953323
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 물리학과, 1997.2, [ ii, 25 p. ]

Keywords

Electron-electron interaction; g-factor; Skyrmion; 양자홀 계; 스커미온; 전자간 상호 작용; Quantum Hall system

URI
http://hdl.handle.net/10203/48425
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=112626&flag=dissertation
Appears in Collection
PH-Theses_Master(석사논문)
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