The current-voltage $(I\text{\ensuremath{-}}V)$ characteristics and resistance switching mechanism of $\mathrm{Ag}∕{\mathrm{La}}_{0.7}{\mathrm{Ca}}_{0.3}{\mathrm{MnO}}_{3}(\mathrm{LCMO})∕\mathrm{Pt}$ sandwiched films, which were deposited on $\mathrm{Pt}∕\mathrm{Ti}∕{\mathrm{SiO}}_{2}∕\mathrm{Si}$ substrates by pulse laser deposition, investigated. $I\text{\ensuremath{-}}V$ can be explained hole carrier injected space charge limited (SCL) conduction controlled $\mathrm{Ag}∕\mathrm{LCMO}$...

ZnO based oxide system Zn1−x−yBexMgyO has been prepared by pulsed laser deposition. By incorporating different amounts of beryllium and magnesium into ZnO, the bandgap ZnBeMgO modulated from 3.7 to 4.9 eV continuously. The crystal quality film improved significantly comparing with that either ZnMgO or BeZnO. These films are promising for fabricating high-efficiency optoelectronic devices such as solar-blind UV detectors.

A comprehensive understanding of strain coupling across heterointerfaces and its impact on physical properties oxide heterostructures is important for elucidating the mechanisms certain novel phenomena occurring at heterointerfaces, such as magnetoelectric coupling, tunneling electroresistance effects, strain-driven exchange bias. Using...

Quantum microwave photonics (QMWP) technology, which harnesses energy-time-entangled biphotons as optical carriers and employs time-correlated single-photon detection for high-speed rf-signal recovery, has demonstrated remarkable potential in achieving nonlocal coding efficient recovery from significant dispersion interference. In this paper, we expound on the principle of maximizing recovered rf signals QMWP systems. Through theoretical analysis experimental validation, establish a precise...

We have presented a detailed resonant Raman scattering investigation for the alloying effect in hexagonal Zn1−xMgxO (x⩽0.323) thin films grown by pulsed laser deposition. Alloy-induced longitudinal optical (LO) phonon resonance has been achieved from peak shift, lineshape, and intensity through changing Mg composition temperature to tune ZnMgO bandgap. By aid of theoretical analysis combining with extrinsic Fröhlich interaction mediated via localized exciton, we demonstrate pronounced...

Phase-separated La0.335Pr0.335Ca0.33MnO3 films were epitaxially grown on (001)- and (111)-oriented ferroelectric single-crystal substrates. Upon poling along the [001] or [111] direction, dramatic decrease in resistance, up to 99.98%, complete melting of charge-ordered phase observed, caused by poling-induced strain rather than accumulation electrostatic charge at interface. Such effects can be effectively tuned a magnetic field mediated electronic separation. In particular, our findings...

Lead magnesium niobate-lead titanate (PMN-PT) ferroelectric thin films were deposited on Ir/SrTiO 3 /TiN/Si (001) substrates by oxygen plasma assisted pulsed laser deposition (PLD) method. Effects of the lanthanum strontium cobaltite (LSCO) buffer layer between PMN-PT film and Ir crystallinity, microstructure, properties electrocaloric effect investigated. Results show that LSCO can improve crystallinity effectively. By applying a voltage 5V to without layer, changes in reversible adiabatic...

The resistance switching characteristics of the La0.7Ca0.3MnO3-based devices with top electrodes Ag, Ag–Al alloys atomic ratios Ag:Al=2:1 (2AgAl) and Ag:Al=1:2 (Ag2Al), Al have been investigated. device 2AgAl electrode shows excellent endurance, where more than 1000 cycles reproducible current-voltage hysteresis stable high low states observed. Based on Auger electron spectroscopy measurement detailed investigation curves these devices, it is suggested that oxygen affinity metal electrode,...

A combination study of structural, optical, and electrical properties has been carried out on N–In codoped p-type ZnO thin films for the origins shallow level hole mobility. The observed small activation energy ∼20meV concentration corresponds well to results from photoluminescence conductivity data, revealing grain boundary trapping nature level. achieved mobility is mainly due lack barrier effect, codoping yielded weak ionized impurity scattering. authors have also revealed scattering...

Ba 0.6 Sr 0.4 Ti 1 − x Al O 3 (BSTA, x=0, at. %, 6 %) thin films have been prepared on Ir∕MgO-buffered silicon substrates by pulsed-laser deposition. All-epitaxial growth of BSTA∕Ir∕MgO∕Si heterostructures has evidenced x-ray diffraction and reflection high-energy electron diffraction. A large reduction in the leakage current density BSTA was observed aluminum doping. For % Al-doped films, dominant conduction mechanism shows space-charge-limited behavior at a low electric field, where...

Bipolar resistance switching was investigated on La0.7Ca0.3MnO3 (LCMO) thin film with Al-Ag alloy top electrode (TE) including different Ag contents. The capability of Al-Ag/LCMO/Pt greatly improved in Al-33%Ag TE structure compared to Al-50%Ag structure. Switching times faster than 100 ns and rewrite cycles more 400 were obtained while maintaining a ratio change larger 1000%. mechanism explained by model interfacial nanostructured domains composed insulator AlOx matrix, as previously...

Abstract Quantum time transfer has emerged as a powerful technique, offering sub-picosecond precision and inherent security through the nonlocal temporal correlation property of energy-time entangled biphoton sources. In this paper, we demonstrate advantage quantum transfer, utilization in detecting potential intercept-resend attacks. By investigating impact these attacks on nonlocality identifier associated with dispersion cancellation entanglement, establish threshold model for...

Multimode quantum light fields significantly enhance state manipulation and communication capabilities by expanding the dimensionality of Hilbert space. In this work, we elaborately design a non-horizontal cavity suitable for Gouy phase-compensated synchronously pumped optical parametric oscillator. By injecting an frequency comb in HG 10 mode into as seed, demonstrate simultaneous generation bright squeezed vacuum 01 mode. The coexistence amplitude quadrature these two orthogonal...

As one of the most fundamental functionalities microwave photonics, frequency mixing plays an essential role in modern radars and wireless communication systems. However, commonly utilized intensity modulation systems often leads to inadequate spurious-free dynamic range (SFDR) for many sought-after applications. Quantum photonics technique offers a promising solution improving SFDR terms higher-order harmonic distortion. In this paper, we demonstrate two types quantum photonic mixers based...

Quantum microwave photonics (QMWP) is an innovative approach that combines energy-time entangled biphoton sources as the optical carrier with time-correlated single-photon detection for high-speed RF signal recovery. This groundbreaking method offers unique advantages such nonlocal encoding and robust resistance to dispersion-induced frequency fading. paper explores versatility of processing quantum photonic by utilizing coincidence window selection on distribution. The demonstration...

Quantum microwave photonics (QMWP) is an innovative approach that combines energy–time entangled biphoton sources as the optical carrier with time-correlated single-photon detection for high-speed radio frequency (RF) signal recovery. This groundbreaking method offers unique advantages, such nonlocal RF encoding and robust resistance to dispersion-induced fading. We explore versatility of processing quantum photonic by utilizing coincidence window selection on distribution. The demonstration...

Abstract In this paper, a dynamic temperature compensation method is presented to stabilize the wavelength of entangled biphoton source, which generated on spontaneous parametric down‐conversion from magnesium oxide doped periodically poled lithium niobate waveguide. Utilizing dispersive Fourier transformation technique, photon variation monitored in case conventional static control, revealing long‐term drift up 556.8 pm over 14‐h measurement period. A Hong‐Ou‐Mandel (HOM) interferometer...

In Quantum Microwave Photonic (QMWP) systems, the most commonly used technique for signal recovery is Time-Correlated Single-Photon Counting (TCSPC), which records arrival time of photon events and further recovers Radio Frequency (RF) from recorded histogram. this paper, we investigate effect jitter on non-local in QMWP. By comparing results two types Single Photon Detectors (SPDs), including Superconducting Nanowire (SNSPDs) Avalanche Diodes (SPADs). The show that SPD limits highest...

The tunable properties of Pt/PMN-PT/LSCO/Ir capacitor have been studied under different applied voltages and frequencies. PMN-PT thin film exhibited good dielectric tunability. A tunability 70.3% at 12 V 100 kHz is obtained for the negative voltage bias. For positive bias, 68.7% which smaller than value asymmetric distribution charged defects suggested as possible causes capacitance–voltage (C–V) behaviors ferroelectric capacitors. On other hand, frequency dependency capacitance's indicated...

ABSTRACT Ag/Ln1−x CaxMnO3/Pt (Ln = Pr, La, X 0.3) sandwich structures showing electric-pulse induced reversible resistance switching properties provide a route for new random access memory (RRAM), because the high-resistance state and low-resistance can be assimilated to logic 1 0 in RRAM systems, respectively. In this work fatigue retention behavior of states have been studied. It is found that EPIR materials modified by post-annealing inner adjusting pulse applied mode. Moreover, devices...