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When two electrons are bound together to form a pair in a superconductor (SC), they can have parallel and antiparallel spin configurations, depending on the spatial parity. The overall anti-symmetry of the wave function requires that even spatial parity (s, d …) must have odd spin (singlet) while odd spatial parity (p, f …) must have even spin (triplet). The possibility of triplet superconductivity...
Both unipolar and bipolar resistive switching behaviors are demonstrated and investigated in the TaTiN/HfOx/Pt structured RRAM devices. A physical model based on the recombination among the electron-depleted oxygen vacancies (VO2+) and the oxygen ions (O2-) released from the TaTiN electrode is proposed to clarify the co-existed bipolar and unipolar resistive switching effect. In the proposed physical...
Excellent rectifying characteristics are demonstrated in the fab-friendly n-Si/HfO2/Ni/TiN devices with rectification ratio of >107 and the driving current of 1mA as a 1D-like selector. The rectified unipolar switching behaviors are demonstrated in the 1D1R cell structured with a diode-like device of n-Si/HfO2/Ni/TiN (1D) and a unipolar RRAM of n+-Si/HfOx/Ni/TiN (1R). Based on the measured I–V...
This paper records a successful application of linear parameter-varying (LPV) technique to energy management upon DC electric scooters (ES). Postulating Dynamic Duality, we identify the ES dynamics into a LPV plant that captures the nonlinearity, whereof the steady and transient responses perfectly match with the measured data. Incorporation of this LPV plant with per-distance performances upon energy...
A new operation scheme on oxide-based resistive-switching devices [resistive random access memory (RRAM)] is proposed to improve the controllability of switching processes in order to achieve an improved memory performance. The improved device-to-device and cycle-to-cycle uniformity, reduced RESET current, and adjustable RHRS/RLRS ratio are demonstrated in the HfOx-based RRAM devices by using the...
We have fabricated efficient bulk heterojunction organic photovoltaic (OPV) device based on poly(2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylenevinylene) (MEH-PPV) with copper(II) phthalocyanine (CuPc) as donor and [6,6]-phenyl C61-butyric acid methyl ester (PCBM) as acceptor. The power conversion efficiency of the MEH-PPV/PCBM OPV device with 15% CuPc (1.41%) is increased by 12% compared with that of...
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