Abstract A series of BaLi 2 Al Si N 6 (BLASN): x Eu 2+ phosphors are successfully synthesized and their crystal structure luminescence properties under varying hydrostatic pressures reported herein. Structure variation is analyzed using in situ high‐pressure X‐ray diffraction Rietveld refinements. Based on decay curves Gaussian fitting emission spectra, the presence two photoluminescence centers demonstrated. : 0.01Eu exhibits an evident peak position shift from 532 to 567 nm with increase...

We report pressure-driven superconductivity (SC) in the vicinity of a commensurate charge-density wave (CCDW) transition-metal dichalcogenides (TMDs) $1T\text{\ensuremath{-}}\mathrm{TaS}{\mathrm{e}}_{2}$ by simultaneous resistivity and ac susceptibility. The superconducting phase enters at 4.5 GPa bulk SC emerges along with collapse CCDW critical pressure ${P}_{c}\ensuremath{\sim}6.5\phantom{\rule{0.16em}{0ex}}\mathrm{GPa}$. Higher than ${P}_{c}$, transition temperature (${T}_{c}$) keeps...

Various phase diagrams of charge density wave (CDW) and superconductivity (SC) have been reported in layered transition-metal dichalcogenides. Some the ordered phases these are not universal because they rely on different critical factors, leading to proliferation contradictory arguments about CDWs SC. Here, authors use cubic anvil high-pressure apparatus explore intrinsic pressure 1$T$-Ta(S, Se)${}_{2}$. A superconducting diagram is revealed border CDW domain existence. Pressure-induced...

Superconducting properties of Cr0.0005NbSe2 (Tc~6.64 K) single crystals have been investigated through the temperature dependent resistivity (~8 GPa) and DC magnetization (~1 measurements. Further, critical current density (Jc) as a function applied magnetic field has studied from isotherms. The vortex pinning mechanisms also systematically analyzed using weak collective theory pressure. Jc corresponds to flux flow enhanced by application pressure due increase Tc changes. We found that is...

We have prepared single crystal of layered Mott-insulator FePS3 and investigated the pressure dependence electrical resistivity. shows a metal-insulator transition between 10 11 GPa. In insulating region, activation energy increases continuously with decreasing it is well extrapolated to ambient value. metallic resistivity propotional square temperature within 50 100 K.

BiS2-based superconductor Eu2SrBi2S2.5Se1.5F4 has been investigated to clarify between Tc and crystal structure under high-pressure. The electrical resistivity by Cubic anvil cell XRD Diamond were measured generating hydrostatic pressure. In measurements, increased from 2.05 3.22 K at 1.5 GPa decreased below 2.62 3 GPa. However, higher-pressure, exhibited a peak again 4 These experimental results suggest the existence of pressure-induced multiple superconducting phases in...

We report a domelike superconductivity and quantum criticality in the 12442-type hybrid-structure superconductor $\mathrm{KC}{\mathrm{a}}_{2}\mathrm{F}{\mathrm{e}}_{4}\mathrm{A}{\mathrm{s}}_{4}{\mathrm{F}}_{2}$ under hydrostatic pressures up to 15 GPa. It is found that superconducting transition temperature (${T}_{c}$) increases from $\ensuremath{\sim}33.5\phantom{\rule{0.16em}{0ex}}\mathrm{K}$ at ambient pressure maximum of $\ensuremath{\sim}36.5\phantom{\rule{0.16em}{0ex}}\mathrm{K}$ 2 GPa...

We report on synthesis and characterization of gallide cluster based Mo8Ga41 superconductor. Transport magnetization measurements confirm the superconducting transition temperature to be 9.8 K. The upper critical field (Hc2), lower (Hc1), Ginzburg–Landau coherence length ( ξGL) penetration depth(λ) are estimated 11.8 T, 150 G, 5.28 nm, 148 nm respectively. electronic band structure, density states phonon dispersion curve calculations obtained by using Density Functional Theory. core level...

We have studied the temperature-pressure phase diagram of two materials Eu3−xSrx Bi2S4F4 (x = 1 and x 2) by electrical resistivity magnetic measurements down to 2 K. Semiconducting resistive behavior observed in both under ambient conditions transforms into metallic as externally applied pressure gradually increases. Superconductivity is at above P 2.37 GPa. Under highest ∼ 2.9 GPa our measurements, Tc ∼9.8 K Eu2SrBi2S4F4 1) 8.2 EuSr2Bi2S4F4 2). Upper critical field Hc2(0) 3.04 T 1.17...

SrxBi2Se3 is recently reported to be a superconductor derived from topological insulator Bi2Se3. It shows maximum resistive Tc of 3.25 K at ambient pressure. We report magnetic (up 1 GPa) and transport properties 8 Gpa) under pressure for single crystalline Sr0.1Bi2Se3 superconductor. Magnetic measurements show that decreases ∼2.6 (0 ∼1.9 (0.81 GPa). Similar behavior observed in as well without much change the metallic characteristics normal-state resistivity. No reentrant superconducting...

We report two distinct superconducting states with different crystal structures and a crossover from type-II to type-I superconductor (SC) in $(\mathrm{Ba},\mathrm{Sr})\mathrm{B}{\mathrm{i}}_{3}$. The parameters are revealed classify SCs: $\mathrm{BaB}{\mathrm{i}}_{3}$ is the weak-coupling limit on basis of $\mathrm{\ensuremath{\Delta}}C/{\ensuremath{\gamma}}_{\mathrm{n}}{T}_{\mathrm{c}}\ensuremath{\sim}0.67$...

We report robust superconducting state and gap symmetry of Nb 5 Ir 3 O via electrical transport specific heat measurements. The analysis manifests that is a strongly coupled superconductor with <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mi mathvariant="normal">Δ</mml:mi> <mml:mi>C</mml:mi> <mml:mrow> <mml:mo stretchy="false">/</mml:mo> </mml:mrow> <mml:msub> <mml:mi>γ</mml:mi> mathvariant="normal">n</mml:mi> </mml:msub> <mml:mi>T</mml:mi>...

Abstract We performed electrical resistivity and X-ray diffraction measurements on the BiS 2 -based compound, EuSr Bi S 2.5 Se 1.5 F 4 , under high pressure using cubic diamond anvil cells, respectively. have also measured at low temperatures ambient pressures. The superconducting transition temperature ( T c ) was 1.13 K found to behave like a superconductor. Upon application of increased pressure, then decreased again, which attributed structural phase transitions that accompany in superconductors.

The powder X-ray diffraction pattern of the BiS2-based compound Eu3Bi2S4F4, acquired under high pressure, reveals a structural phase transition at 3.55 GPa. Reportedly, Eu3Bi2S4F4 exhibits metal-semiconductor and bulk superconductivity pressures close to 4 These transitions are induced by transition.

We have investigated the pressure (

The two-stage 6-8 multi-anvil (MA8) apparatus is an important large-volume, high-pressure technique that has been widely used in the high pressure mineralogy and material synthesis, mainly at room temperature or above. Recently, we have successfully developed a MA8 for low-temperature physical property measurements. first-stage anvils top bottom sides are fabricated as single piece order to reduce total size of cylindrical module, which put top-loading cryostat compressed by 1000 ton...

We investigated the transport (ρ(T) & ρxy(T)) and magnetic (χ'(T)&M(T)) studies with application of pressure (P) on Fe1.09Se0.55Te0.45 single crystal. Superconducting Tc is found to be P sensitive reaching a maximum 19.9 K at ~3.3 GPa then it decreases upto ~8 GPa.The relationship between thermal activation energy for both HHcr exhibits similar behaviour that superconducting Fermi velocity. The excess Fe act as Kondo impurity induces scattering 0 GPa. completely suppressed external P....

We report on synthesis and characterization of gallide cluster based Mo8Ga41 superconductor. Transport magnetization measurements confirm the superconducting transition temperature to be 9.8 K. The upper critical field, lower Ginzburg-Landau coherence length penetration depth are estimated 11.8T, 150G, 5.2nm, 148nm respectively. electronic band structure, density states phonon dispersion curve calculations obtained by using Density Functional Theory. core level X-ray Photoelectron...

Abstract Resistivity, magnetoresistance, and upper critical field, have been comprehensively studied for the bismuth (Bi)-III superconducting phase in pressure range of 2.9 GPa ⩽ P 6.2 GPa. It is discovered that transition temperature T c Bi-III gradually suppressed with increasing pressure. Strikingly, temperature-dependent resistivity above region reveals notable non-Fermi-liquid behaviors, resembling many unconventional systems. As increases, magnetoresistance effect progressively grows...