Amit Keren
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View article: Comparative Analysis of Cervical Disc Arthroplasty and Anterior Cervical Discectomy and Fusion: Trends, Demographics, and Clinical Outcomes in a Nationwide Inpatient Sample
Comparative Analysis of Cervical Disc Arthroplasty and Anterior Cervical Discectomy and Fusion: Trends, Demographics, and Clinical Outcomes in a Nationwide Inpatient Sample Open
Introduction: Cervical disc disease is a common cause of disability worldwide. Two surgical options for refractory CDD are anterior cervical discectomy and fusion (ACDF) and cervical disc arthroplasty (CDA). While ACDF is well established,…
View article: A New Family of Ternary Intermetallic Compounds with Dualistic Atomic Ordering – The ZIP Phases
A New Family of Ternary Intermetallic Compounds with Dualistic Atomic Ordering – The ZIP Phases Open
A new family of nanostructured ternary intermetallic compounds − named the ZIP phases − is introduced in this work. The ZIP phases exhibit dualistic atomic ordering, i.e., they form two structural variants: one with the fcc diamond cubic s…
View article: Opioid Dependence Increases Complications and Costs Following Lumbar Spinal Fusion: Insights from a Nationwide Database
Opioid Dependence Increases Complications and Costs Following Lumbar Spinal Fusion: Insights from a Nationwide Database Open
Background: Opioid dependence is prevalent among patients undergoing lumbar spinal fusion and has been linked to poor postoperative outcomes. However, its specific impact on surgical complications and hospital resource utilization remains …
View article: Evaluating Postoperative Outcomes, Costs, Length of Stay, and Complications in Opioid-Dependent Patients: A Comparative Analysis Using the National Inpatient Sample
Evaluating Postoperative Outcomes, Costs, Length of Stay, and Complications in Opioid-Dependent Patients: A Comparative Analysis Using the National Inpatient Sample Open
Introduction: Opioid dependence is prevalent among patients undergoing lumbar spinal fusion and has been linked to poor postoperative outcomes. However, its specific impact on surgical complications and hospital resource utilization remain…
View article: Imaging the Sub-Moiré Potential Landscape using an Atomic Single Electron Transistor
Imaging the Sub-Moiré Potential Landscape using an Atomic Single Electron Transistor Open
Electrons in solids owe their properties to the periodic potential landscapes they experience. The advent of moiré lattices has revolutionized our ability to engineer such landscapes on nanometer scales, leading to numerous groundbreaking …
View article: Magnetic Order and Magneto-Elasticity in the Electronic Excitations of Gd-$i$-MAX
Magnetic Order and Magneto-Elasticity in the Electronic Excitations of Gd-$i$-MAX Open
We report the investigation of electronic collective modes in rare-earth-based magnets (Mo$_{2/3}$RE$_{1/3}$)$_2$AlC (also known as RE-$i$-MAX phases), where RE=Gd, Yb, and Dy, using single crystal samples. A detailed investigation of the …
View article: The two critical temperatures conundrum in La$_{1.83}$Sr$_{0.17}$CuO$_4$
The two critical temperatures conundrum in La$_{1.83}$Sr$_{0.17}$CuO$_4$ Open
The in-plane and out-of-plane superconducting stiffness of La_{1.83}Sr_{0.17}CuO_4 rings appear to vanish at different transition temperatures, which contradicts thermodynamical expectation. In addition, we observe a surpris…
View article: Report on 2308.15540v5
Report on 2308.15540v5 Open
The in-plane and out-of-plane superconducting stiffness of La 1.83 Sr 0.17 CuO 4 rings appear to vanish at different transition temperatures, which contradicts thermodynamical expectation.In addition, we observe a surprisingly strong depen…
View article: Report on 2308.15540v4
Report on 2308.15540v4 Open
The in-plane and out-of-plane superconducting stiffness of La 1.83 Sr 0.17 CuO 4 rings appear to vanish at different transition temperatures, which contradicts thermodynamical expectation.In addition, we observe a surprisingly strong depen…
View article: Report on 2308.15540v4
Report on 2308.15540v4 Open
The in-plane and out-of-plane superconducting stiffness of La 1.83 Sr 0.17 CuO 4 rings appear to vanish at different transition temperatures, which contradicts thermodynamical expectation.In addition, we observe a surprisingly strong depen…
View article: The two critical temperatures conundrum in La$_{1.83}$Sr$_{0.17}$CuO$_4$
The two critical temperatures conundrum in La$_{1.83}$Sr$_{0.17}$CuO$_4$ Open
The in-plane and out-of-plane superconducting stiffness of LSCO rings appear to vanish at different transition temperatures, which contradicts thermodynamical expectation. In addition, we observe a surprisingly strong dependence of the out…
View article: The Ground-state Inter-plane Superconducting Coherence Length of La$_{1.875}$Sr$_{0.125}$CuO$_4$ Measured by a "Xiometer"
The Ground-state Inter-plane Superconducting Coherence Length of La$_{1.875}$Sr$_{0.125}$CuO$_4$ Measured by a "Xiometer" Open
A long excitation coil piercing a superconducting (SC) ring is used to generate ever increasing persistent current in the ring, until the current destroys the order parameter. Given that the penetration depth $λ$ is known, this experiment …
View article: Post-decompression Disc Herniation in Minimally Invasive versus "Mini-open" Technique - A More Common Complication
Post-decompression Disc Herniation in Minimally Invasive versus "Mini-open" Technique - A More Common Complication Open
BackgroundIndex level disc herniation following lumbar spinal decompression is somewhat overlooked as postoperative complication, resulting in return of symptoms. It is proposed that the combination of local instability and degenerated dis…
View article: Superconducting Stiffness and Coherence Length of FeSe0.5Te0.5 Measured in a Zero-Applied Field
Superconducting Stiffness and Coherence Length of FeSe0.5Te0.5 Measured in a Zero-Applied Field Open
Superconducting stiffness ρs and coherence length ξ are usually determined by measuring the penetration depth λ of a magnetic field and the upper critical field Hc2 of a superconductor (SC), respectively. However, in magnetic SC, which is …
View article: Post-decompression Disc Herniation - A More Common Complication. Comparison Between Minimally Invasive and "Mini-Open" Techniques
Post-decompression Disc Herniation - A More Common Complication. Comparison Between Minimally Invasive and "Mini-Open" Techniques Open
Background Index level disc herniation following lumbar spinal decompression is somewhat overlooked as postoperative complication, resulting in return of symptoms. It is proposed that the combination of local instability and degenerated di…
View article: Mixed superconducting state without applied magnetic field
Mixed superconducting state without applied magnetic field Open
A superconducting (SC) mixed state occurs in type-II superconductors where the upper critical field Hc2 is higher than the thermodynamic critical field Hc. When an applied field is in between these fields, the free energy depends weakly on…
View article: Magnetic structure determination of high-moment rare-earth-based laminates
Magnetic structure determination of high-moment rare-earth-based laminates Open
We report muon spin rotation (mu SR) and neutron diffraction on the rare-earth-based magnets (Mo2/3RE1/3)2AlC, also predicted as parent materials for two-dimensional (2D) derivatives, where the rare earth (RE) = Nd, Gd (only mu SR), Tb, Dy…
View article: Magnetic structure determination of rare-earth based, high moment,\n atomic laminates; potential parent materials for 2D magnets
Magnetic structure determination of rare-earth based, high moment,\n atomic laminates; potential parent materials for 2D magnets Open
We report muon spin rotation ($\\mu$SR) and neutron diffraction on the\nrare-earth based magnets (Mo$_{2/3}$RE$_{1/3}$)$_2$AlC, also predicted as\nparent materials for 2D derivatives, where RE = Nd, Gd (only ($\\mu$SR), Tb, Dy,\nHo and Er.…
View article: Magnetic structure determination of rare-earth based, high moment, atomic laminates; potential parent materials for 2D magnets
Magnetic structure determination of rare-earth based, high moment, atomic laminates; potential parent materials for 2D magnets Open
We report muon spin rotation ($μ$SR) and neutron diffraction on the rare-earth based magnets (Mo$_{2/3}$RE$_{1/3}$)$_2$AlC, also predicted as parent materials for 2D derivatives, where RE = Nd, Gd (only ($μ$SR), Tb, Dy, Ho and Er. By cross…
View article: Stiffnessometer: A magnetic-field-free superconducting stiffness meter and its application
Stiffnessometer: A magnetic-field-free superconducting stiffness meter and its application Open
We provide a detailed account for a new method to measure superconducting stiffness $\rho_{s}$, critical current density $j_c$, and coherence length $\xi$, in one apparatus, without subjecting the sample to magnetic field or attaching lead…
View article: Relevance of magnetism to cuprate superconductivity: Lanthanides versus charge-compensated cuprates
Relevance of magnetism to cuprate superconductivity: Lanthanides versus charge-compensated cuprates Open
We address what seemed to be a contradiction between the lanthanide series REBa2Cu3Oy (RE123) and the charge-compensated series (CaxLa1-x)(Ba1.75-xLa0.25+x)Cu3Oy (CLBLCO) regarding the superexchange (J) dependence of the maximum supercondu…
View article: Zero energy states at a normal-metal/cuprate-superconductor interface probed by shot noise
Zero energy states at a normal-metal/cuprate-superconductor interface probed by shot noise Open
We report measurements of the current noise generated by the optimally doped, x=0.15, ${\rm Au- La_{2-x}Sr_xCuO_4}$ junctions. For high transmission junctions on (110) surface, we observed split zero-bias conductance peak (ZBCP), accompani…