73 citations · 242 across the 19 of their papers we have counts for
19 papers
When electrons meet ferroelastic domain walls in Strontium Titanate
Shashank Kumar Ojha, Jyotirmay Maity, Srimanta Middey
Strontium titanate (SrTiO), famously described by Nobel laureate K. A. Müller as the "drosophila of solid-state physics", has been extensively investigated over the last sevent…
Topological textures and emergent altermagnetic signatures in ultrathin BiFeO3
George Fratian, Maya Ramesh, Xinyan Li +23
Magnetoelectric multiferroics, materials with intrinsically coupled electric polarization and magnetic order, promise ultralow-power switching, nonvolatile memory, and energy-effic…
Anisotropic magnon transport in an antiferromagnetic trilayer heterostructure: is BiFeO an altermagnet?
Sajid Husain, Maya Ramesh, Qian Song +18
Magnons provide a route to ultra-fast transport and non-destructive readout of spin-based information transfer. Here, we report magnon transport and its emergent anisotropic nature…
Colossal enhancement of spin transmission through magnon confinement in an antiferromagnet
Sajid Husain, Maya Ramesh, Xinyan Li +21
Since Felix Bloch's introduction of the concept of spin waves in 1930, magnons (the quanta of spin waves) have been extensively studied in a range of materials for spintronics, par…
Beyond being free: glassy dynamics of SrTiO-based two-dimensional electron gas
Jyotirmay Maity, Shashank Kumar Ojha, Prithwijit Mandal +5
Electron glasses offer a convenient laboratory platform to study glassy dynamics. Traditionally, the interplay between long-range Coulomb interactions and disorder is deemed instru…
Morphogenesis of Spin Cycloids in a Non-collinear Antiferromagnet
Shashank Kumar Ojha, Pratap Pal, Sergei Prokhorenko +11
Pattern formation in spin systems with continuous-rotational symmetry (CRS) provides a powerful platform to study emergent complex magnetic phases and topological defects in conden…
Symmetry-designed BiFeO3 single domain spin cycloid for efficient spintronics
Pratap Pal, Jonathon L. Schad, Anuradha M. Vibhakar +16
Deterministic control of coupled ferroelectric and antiferromagnetic orders remains a central challenge in multiferroics, limiting their integration into functional magnetoelectric…
Site-selective polar compensation of Mott electrons in a double perovskite heterointerface
Nandana Bhattacharya, Arpita Sen, Ke Qu +17
Double perovskite oxides (DPOs) with two transition metal ions (O) offer a fascinating platform for exploring exotic physics and practical applications. Studyin…
Orthorhombic distortion drives orbital ordering in an antiferromagnetic 3 Mott insulator
Prithwijit Mandal, Shashank Kumar Ojha, Duo Wang +9
The orbital, which represents the shape of the electron cloud, very often strongly influences the manifestation of various exotic phenomena, e.g., magnetism, metal-insulator transi…
Quantum fluctuations lead to glassy electron dynamics in the good metal regime of electron doped KTaO3
Shashank Kumar Ojha, Sankalpa Hazra, Surajit Bera +10
One of the central challenges in condensed matter physics is to comprehend systems that have strong disorder and strong interactions. In the strongly localized regime, their subtle…
Hole doping in a negative charge transfer insulator
Ranjan Kumar Patel, Krishnendu Patra, Shashank Kumar Ojha +7
NiO is a negative charge transfer energy system and exhibits a temperature-driven metal-insulator transition (MIT), which is also accompanied by a bond disproportionation (…
Electronic and magnetic properties of epitaxial thin film of Nd\tsubscript{0.5}Ba\tsuscriptb{0.5}MnO\tsubscript{3}
Siddharth Kumar, Shashank Kumar Ojha, Ranjan Kumar Patel +3
Contradictory reports about the electronic and magnetic behavior of bulk Nd0:5Ba0:5MnO3 with uniform disorder exist in the literature. In this work, we investigate the thin films o…
Electron trapping and detrapping in an oxide two-dimensional electron gas: The role of ferroelastic twin walls
Shashank Kumar Ojha, Sankalpa Hazra, Prithwijit Mandal +4
The choice of electrostatic gating over the conventional chemical doping for phase engineering of quantum materials is attributed to the fact that the former can reversibly tune th…
Spin liquid behavior of a three-dimensional magnetic system BaNiIrO with = 1
Siddharth Kumar, S. K. Panda, Manju Mishra Patidar +7
The quantum spin liquid (QSL) is an exotic phase of magnetic materials where the spins continue to fluctuate without any symmetry breaking down to zero temperature. Among the handf…
Oxygen Vacancy-Induced Topological Hall effect in a Nonmagnetic Band Insulator
Shashank Kumar Ojha, Sanat Kumar Gogoi, Manju Mishra Patidar +7
The discovery of skyrmions has sparked tremendous interests about topologically nontrivial spin textures in recent times. The signature of noncoplanar nature of magnetic moments ca…
Oxygen vacancy induced electronic structure modification of KTaO
Shashank Kumar Ojha, Sanat Kumar Gogoi, Prithwijit Mandal +4
The observation of metallic interface between band insulators LaAlO and SrTiO has led to massive efforts to understand the origin of the phenomenon as well as to search for…
Epitaxial stabilization of ultra thin films of high entropy perovskite
Ranjan Kumar Patel, Shashank Kumar Ojha, Siddharth Kumar +4
High entropy oxides (HEOs) are a class of materials, containing equimolar portions of five or more transition metal and/or rare-earth elements. We report here about the layer-by-la…
Anomalous electron transport in epitaxial NdNiO films
Shashank Kumar Ojha, Sujay Ray, Tanmoy Das +8
The origin of simultaneous electronic, structural and magnetic transitions in bulk rare-earth nickelates (NiO) remains puzzling with multiple conflicting reports on the nat…
Epitaxial strain modulated electronic properties of interface controlled nickelate superlattice
S. Middey, D. Meyers, Shashank Kumar Ojha +5
Perovskite nickelate heterostructure consisting of single unit cell of EuNiO and LaNiO have been grown on a set of single crystalline substrates by pulsed laser interval de…