8 papers
Size-Dependent Band-Tail Localization in Oxide Semiconductors Revealed by Direct Density-of-States Mapping
Chang Niu, Kisoo Nam, Aravindh Shankar +5
Disorder-induced localization is expected to become increasingly important as amorphous oxide semiconductor transistors are scaled toward low-dimensional channels, yet the electron…
Acoustic-phonon-driven spin-lattice relaxation of the hBN boron vacancy in the sub-THz regime
Priyo Adhikary, Pramey Upadhyaya
The negatively charged boron vacancy center in hexagonal boron nitride is a premier candidate for quantum sensing, yet its performance is critically limited by longitudinal spin-la…
Noncollinear spin textures and 90° domain walls in twisted XY magnets
Guanghui Cheng, Shiva T. Konakanchi, Andres E. Llacsahuanga Allcca +8
Twisted moiré magnets are promising in exploring noncollinear magnetic phases, yet current experimental studies have been restricted to uniaxial magnets, limiting the accessible p…
Exploiting Negative Capacitance for Unconventional Coulomb Engineering
Aravindh Shankar, Pramey Upadhyaya, Supriyo Datta
The many-body ground state of a two-dimensional electron system can be tuned by Coulomb engineering through control of the dielectric environment. However, in conventional dielectr…
Sub-Terahertz Spin Relaxation Dynamics of Boron-Vacancy Centers in Hexagonal Boron Nitride
Abhishek Bharatbhai Solanki, Yueh-Chun Wu, Hamza Ather +12
Quantum sensors based on spin-defect relaxation have become powerful tools for detecting faint magnetic signals, yet their operation has remained largely confined to low magnetic f…
Octupole-driven spin-transfer torque switching of all-antiferromagnetic tunnel junctions
Jaimin Kang, Mohammad Hamdi, Shun Kong Cheung +23
Magnetic tunnel junctions (MTJs) based on ferromagnets are canonical devices in spintronics, with wide-ranging applications in data storage, computing, and sensing. They simultaneo…