We report an x-ray absorption spectroscopic (XAS) study on thin films of ${\mathrm{La}}_{0.7}{\mathrm{Ce}}_{0.3}{\mathrm{MnO}}_{3}.$ The measurements clearly show that the cerium is in Ce(IV) valence state, and manganese present a mixture ${\mathrm{Mn}}^{2+}$ ${\mathrm{Mn}}^{3+}$ states. These data demonstrate ${\mathrm{La}}_{0.7}{\mathrm{Ce}}_{0.3}{\mathrm{MnO}}_{3}$ electron-doped colossal magnetoresistive manganite, finding may open up opportunities for device applications as well further...

We report the magnetotransport characteristics of a trilayer ferromagnetic tunnel junction built an electron doped manganite (La0.7Ce0.3MnO3) and hole (La0.7Ca0.3MnO3). At low temperatures exhibits large positive tunneling magnetoresistance (TMR), irrespective bias voltage. intermediate below T(C) sign TMR is dependent on voltage across junction. The magnetoresistive strongly suggest that La0.7Ce0.3MnO3 minority spin carrier ferromagnet with high degree polarization, i.e., transport half-metal.

In this letter, we report the improved magnetotransport properties of La0.7Sr0.3MnO3-borosilicate glass composite with different weight percents glass. All composites showed ferromagnetic nature at room temperature. The microstructure these was seen using a scanning electron microscope. reconfirmed spot energy dispersive x-ray analysis. We observe an enhancement low-field magnetoresistance (<200 Oe) temperature for optimal composition 25 wt % It is argued that layer separating grain...

The magnetic coupling of flexible metal phthalocyanine (MPc) thin films can be modified depending on the polymorphic form adopted by crystals. A simple annealing procedure switch couplings from antiferromagnetic to ferromagnetic (MnPc) or paramagnetic (CuPc), opening up avenues for spintronic applications. Density functional and perturbation theories rationalize these trends attribute mechanism indirect exchange.

A La2NiMnO6 polycrystalline sample prepared by the sol–gel method showed monoclinic crystal structure with P21/n space group and a saturation magnetization of 4.63 μB/f.u. at 5 K. Impedance spectroscopy results in temperature range 10 K < T 300 have revealed distinct conduction process grains grain boundaries, where followed variable hopping mechanism boundaries obeyed Arrhenius thermal activation. negative magnetoresistance 2.5% was observed paramagnetic to ferromagnetic transition, this...

The hole-doped (p-) manganite La0.7Ca0.3MnO3 and the electron-doped (n-) La0.7Ce0.3MnO3 undergo an insulator-to-metal transition at around 250 K, above which both behave as a polaronic semiconductor. We have fabricated epitaxial trilayer (La0.7Ca0.3MnO3/SrTiO3/La0.7Ce0.3MnO3), where SrTiO3 is insulator. At room temperature, i.e., in semiconducting regime, it exhibits asymmetric current–voltage (I–V) characteristics akin to p–n diode. observed asymmetry I–V disappears low temperatures layers...

The polycrystalline La1−xCexMnO3 manganites do not exist in single phase bulk under the preparation conditions so far employed, but their and epitaxial films deposited by pulsed laser deposition (PLD) technique form readily phase. cerium oxide (CeO2) remains partially unreacted when sample is prepared through solid state reaction route. resistivity of La0.7Ce0.3MnO3 shows a broad metal insulator transition (MIT) clearly resolved into two peaks, suggesting presence second (impurity) phase,...

We explore the phase coherence of thin films topological insulator material Bi2Se2Te grown through pulsed laser deposition (PLD) technique. The were characterised using various techniques for and composition. found to be good quality. carried out extensive magneto-transport studies these that they exhibit two dimensional weak antilocalization behaviour. A careful analysis revealed a relatively high length (58nm at 1.78K) PLD film. Since is an inexpensive technique, with possibility integrate...

Abstract The surface states of a 3D topological insulator (TI) exhibit protection against backscattering. However, the contribution bulk electrons to transport data is an impediment states. We report tuning chemical potential in Bi 2 Se Te TI thin films, pinning it near center band gap, thereby suppressing carriers. temperature dependent resistance these films show activated behavior down 50 K, followed by metallic transition at lower temperatures, hallmark robustness Manifestation and...

In this study, we report efficient spin to charge conversion (SCC) in the topological insulator (TI) based heterostructure (BiSbTe1.5Se1.5/Cu/Ni80Fe20) by using spin-pumping technique, where BiSbTe1.5Se1.5 is TI and Ni80Fe20 ferromagnetic (FM) layer. The SCC, characterized inverse Edelstein effect length (λIEE) material, gets altered with an intervening Copper (Cu) layer, it depends on interlayer thickness. introduction of Cu layer at interface FM metal provides a new degree freedom for...

We report on the electronic, transport, and magnetic properties of Ce-doped manganite, La1−xCexMnO3. This material is remarkably similar to heavily investigated hole doped manganite La1−xCaxMnO3; e.g., both materials show Curie temperatures TC∼250 K for x=0.3. The main difference which makes highly interesting basic research as well possible applications (e.g., in spintronics) fact that Ce doping drives manganese a mixture Mn2+ Mn3+ induced by electron doping. present conclusive evidence...

We investigate the effect of common bath decoherence on qubits Alice in usual teleportation protocol. The system interaction is studied under central spin model, where are coupled to spins through isotropic Heisenberg interaction. have given a more generalized representation protocol terms density matrices and calculated average fidelity teleported state for different Bell measurements performed by Alice. differentiates outcome various made There will be high singlet measurement when both...

We study the macroscopic entanglement properties of a low-dimensional quantum spin system by investigating its magnetic at low temperatures and high fields. The chosen for this is copper nitrate (Cu(NO3)2 × 2.5H2O), which chain that exhibits dimerization. temperature field dependence from susceptibility magnetization data are given, comparing experimental results with theoretical estimates. Extraction has been made possible through witness operator, susceptibility. An explicit comparison...

Strong bulk spin-orbit coupling and the presence of robust, spin-momentum-locked surface states make topological insulators uniquely advantageous as spin detectors for potential spin-orbitronics applications. In this work, role in spin-detection functionality is explored by studying temperature dependence pumping a BiSbTe1.5Se1.5(BSTS)/Co20Fe60B20(CoFeB) bilayer using ferromagnetic resonance spectroscopy. Across studied range, significantly broader linewidths are detected sample compared to...

Spin-orbit interaction couples the spin of a particle to its motion and leads spin-induced transport phenomena such as spin-Hall effects Chern insulators. In this work, we extend concept internal-external state coupling higher internal symmetry, exploring features beyond established spin-orbit regime. We couple suitable resonant laser beams gas ultracold atoms, thereby inducing artificial SU(3) non-Abelian gauge fields that act on degenerate ground manifold comprised three dark states....

<title>Abstract</title> Spin-orbit interaction couples the spin of a particle to its motion and leads spin-induced transport phenomena such as spin-Hall effects Chern insulators. In this work, we extend concept internal-external state coupling higher internal symmetry, exploring features beyond established spin-orbit regime. We couple suitable resonant laser beams gas ultracold atoms, thereby inducing artificial SU(3) non-Abelian gauge fields that act on degenerate ground manifold comprised...

A method is formulated for the straightforward evaluation of Coulomb-Born and Coulomb-Born-Oppenheimer (CBO) cross sections $1s$-$2s$ excitation hydrogenlike ions by electron impact, without employing partial-wave analysis. The simplicity makes it very economical calculation electron-ion scattering at any energy. Some results with $Z=2, 3, 6, 10, \mathrm{and} 50$ are presented. high-energy CBO ${\mathrm{He}}^{+}$ agree well recent experimental findings.

A new experimental realization of heat capacity as an entanglement witness (EW) is reported. Entanglement properties a low dimensional quantum spin system are investigated by measurements performed down to very temperatures (400mK), for various applied magnetic field values. The experimentally extracted results the value at zero matches perfectly with theoretical estimates from model Hamiltonians. studied sample $\frac{1}{2}$ antiferromagnetic which shows clear signature phase transition...

We explore the temperature dependent magnetoresistance of bulk insulating topological insulator thin films. Thin films Bi2Se2Te and BiSbTeSe1.6 were grown using Pulsed Laser Deposition technique subjected to transport measurements. Magnetotransport measurements indicate a non-saturating linear (LMR) behavior at high magnetic field values. present careful analysis explain origin LMR taking into consideration all existing models LMR. Here we consider that states metallic surface constitute two...

The electronic structure of ${\mathrm{La}}_{0.7}{\mathrm{Ce}}_{0.3}{\mathrm{MnO}}_{3}$ (LCeMO) thin films has been investigated using photoemission spectroscopy (PES) and x-ray absorption (XAS). Ce $3d$ core-level PES XAS spectra LCeMO are very similar to those ${\mathrm{CeO}}_{2},$ indicating that ions close being tetravalent. A weak $4f$ resonance is observed around the $4\stackrel{\ensuremath{\rightarrow}}{d}4f$ edge, suggesting localized states almost empty in ground state. Mn $2p$...

The synthesis of Ni-filled multi-walled carbon nanotubes was performed by atmospheric pressure chemical vapor deposition with propane on Si at 850 °C using a simple mixture (N, N'-bis(salicylidene)-ethylenediiminato) nickel(II), commonly known as Ni(salen), and conventional photoresist. Analysis the scanning electron microscopy together high-resolution transmission show that have grown tip-growth mechanism exhibit structure partial Ni filling. high quality is evidenced Raman spectroscopy....

Nanocrystalline diamond (NCD) has been grown using a nanodiamond seeding technique, leading to dense form of this material, with grain sizes around 100 nm. The electrical properties both intrinsic and lightly boron-doped NCD have investigated impedance spectroscopy Hall effect measurements. For boundaries grains themselves initially contribute the frequency dependant values recorded. However, boundary conduction can be removed films become highly resistive. Interestingly, ac these are also...