Yong Joo Doh

Fabrication of metal nanowire using carbon nanotube as a mask

We report on the fabrication of metal nanowires on an insulating substrate using carbon nanotubes as a new kind of mask material. By irradiating Ar+ ions of 300 eV energy on a nanotube-coated Au/Ti thin layer on a SiO2 substrate, Au/Ti nanowires were successfully formed just underneath the nanotube, indicating that the carbon nanotubes had acted as a good mask against the argon ion bombardment. The Au/Ti wire of a few nanometers in width was frequently observed among the wires of various widths. After the formation of the Au/Ti nanowires, the carbon nanotube on the metal nanowire could be removed by atomic force microscope.

Suppressed superconductivity of the surface conduction layer in Bi 2 Sr 2 CaCu 2 O 8 + x single crystals probed by c -axis tunneling measurements

We fabricated small-size stacks on the surface of

Modulation doping in ZnO nanorods for electrical nanodevice applications

{mathrm{Bi}}_{2}{mathrm{Sr}}_{2}{mathrm{CaCu}}_{2}Z{mathrm{O}}_{8+x}

ZnO/Mg0.2Zn0.8O coaxial nanorod heterostructures for high-performance electronic nanodevice applications

single crystals with the bulk transition temperature

Mechanism of the interlayer dissipation in Bi2Sr2CaCu2O8−x single crystals

{T}_{c}ensuremath{simeq}90

The c-axis dissipation and vortex phases in Bi2Sr2CaCu2O8+x crystals

K, each containing a few intrinsic Josephson junctions. Below a critical temperature

Peak observed in the secondary voltage of a flux transformer configuration in Bi2Sr2CaCu2O8−x

{T}_{c}^{ensuremath{}}(ensuremath{ll}{T}_{c}),

Fabrication and Optical Characteristics of Position-Controlled ZnO Nanotubes and ZnO/Zn0.8Mg0.2O Coaxial Nanotube Quantum Structure Arrays

we have observed a weakened Josephson coupling between the CuO

Quasiparticle-pair interference effect in proximity-coupled junction ladders.

{}_{2}

Observation of zero-crossing steps in surface junctions of Bi

superconducting double layer at the crystal surface and the adjacent one located deeper inside a stack. The quasiparticle branch in the I-