Journal- Korean Physical Society (J Kor Phys Soc)

Publications in this journal

• Article: Observation of optical phonons and TQ-LO splitting in CuBr and CuCl nanocrystals

  Inoue K, Yamanaka A, Tanaka N, Baranov A.V, Fedorov A.V
  Journal- Korean Physical Society 02/2013; 32:S569.
• Article: MgO overlayer thickness dependence of perpendicular magnetic anisotropy in CoFeB thin films (accepted)

  D.D. Lam, F. Bonell, S. Miwa, Y. Shiota, K. Yakushiji, H. Kubota, T. Nozaki, A. Fukushima, S. Yuasa, Y. Suzuki
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  ABSTRACT: The dependence of the magnetization and perpendicular magnetic anisotropy (PMA) of Ta/CoFeB/MgO/Ta on the thicknesses of the CoFeB layer and the MgO overlayer was investigated by vibrating sample magnetometer. The magnetization is found to be small for samples with a thin MgO overlayer. The PMA strongly depends on the MgO overlayer (hereafter, MgO) thickness and its maximum value of 1.74 erg/cm2 is achieved for a 1.0 nm thick MgO overlayer with annealing at 300 °C. The volume anisotropy of the CoFeB layer is found to be independent of the MgO thickness, which suggest that only the interface anisotropy depends on the MgO thickness. The possible mechanisms that may influence the interface magnetization and anisotropy are discussed herein.
  Journal- Korean Physical Society 01/2013;
• Article: Influence of phonon confinement on the optically-detected electrophonon resonance linewidth in rectangular quantum wires

  Tran Cong Phong, Le Thi Thu Phuong, Huynh Vinh Phuc, Pham Tuan Vinh
  Journal- Korean Physical Society 01/2013; 62:305.
• Article: High-flux cold rubidium atomic beam for strongly-coupled cavity QED

  Basudev Roy, Michael Scholten
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  ABSTRACT: This paper presents a setup capable of producing a high-flux continuous beam of cold rubidium atoms for cavity quantum electrodynamics experiments in the region of strong coupling. A 2D+ magneto-optical trap (MOT), loaded with rubidium getters in a dry-film-coated vapor cell, fed a secondary moving-molasses MOT (MM-MOT) at a rate greater than 2 × 1010 atoms/s. The MMMOT provided a continuous beam with a tunable velocity. This beam was then directed through the waist of a cavity with a length of 280 µm, resulting in a vacuum Rabi splitting of more than ±10 MHz. The presence of a sufficient number of atoms in the cavity mode also enabled splitting in the polarization perpendicular to the input. The cavity was in the strong coupling region, with an atom-photon dipole coupling coefficient g of 7 MHz, a cavity mode decay rate κ of 3 MHz, and a spontaneous emission decay rate γ of 6 MHz.
  Journal- Korean Physical Society 08/2012; 61(3):359.