A5001895148- Electronic and Structural Properties of Oxides
- Organic and Molecular Conductors Research
- Advanced Wireless Communication Techniques
- Topological Materials and Phenomena
- PAPR reduction in OFDM
- Physics of Superconductivity and Magnetism
- Advanced Power Amplifier Design
- Iron-based superconductors research
- 2D Materials and Applications
- Advanced Thermoelectric Materials and Devices
- Magnetic and transport properties of perovskites and related materials
Yonsei University
2006-2024
Vertical charge order shapes the electronic properties in layered density wave (CDW) materials. Various stacking orders inevitably create nanoscale domains with distinct structures inaccessible to bulk probes. Here, characteristics of 1$T$-TaS$2$ are analyzed using scanning tunneling spectroscopy (STS) and functional theory (DFT) calculations. It is observed that Mott-insulating undergo a transition band-insulating restoring vertical dimerization CDWs. Furthermore, STS measurements covering...
4Hb-${\mathrm{TaS}}_{2}$ has been proposed to possess unconventional superconductivity with broken time-reversal symmetry due distinctive layered structure, featuring a heterojunction between 2D triangular Mott insulator and charge-density wave metal. However, since frustrated spin state in the correlated insulating layer is susceptible charge ordering carrier doping, it required investigate distribution driven by interlayer transfer understand its superconductivity. Here, we use...
Solids undergoing a transition from order to disorder experience the proliferation of topological defects. The melting process generates transient quantum states. However, their dynamical nature with femtosecond lifetime hinders exploration atomic precision. Here, we suggest an alternative approach by focusing on interface created competing degenerate We use scanning tunneling microscope (STM) visualize unidirectional charge density wave (CDW) and its spatial progression ("static melting")...
Proposed is a joint design of space-time (ST) mapping and half-sized linear constellation precoding (LCP) to provide lower peak-to-average power ratio (PAPR) along with decoding complexity while maintaining full-diversity full-rate (FDFR), maximum coding gain, product distance distribution at the level conventional STBC full-sized LCP. The proposed quasi-orthogonal ST LCP (Q-HLCP) shown have PAPR advantage so that Q-HLCP for nonlinear amplifier 3 dB input back-off shows, most, 0.5 loss...