59 citations · 137 across the 10 of their papers we have counts for
10 papers
Relevance of long-range screening in Mott transition examined via a hydrogen lattice
Zi-Jian Lang, Sudeshna Sen, Pak Ki Henry Tsang +3
The Mott transition, a metal-insulator transition due to strong electronic interaction, is observed in many materials without an accompanying change of system symmetry. An importan…
Emergent soft-gap Anderson models at quantum criticality in a lattice Hamiltonian within dynamical mean field theory
Sujan K. K., Vinayak M. Kulkarni, N. S. Vidhyadhiraja +1
Local quantum criticality in itinerant fermion systems has been extensively investigated through the soft-gap Anderson impurity model, wherein a localized, correlated impurity, hyb…
The Mott transition as a topological phase transition
Sudeshna Sen, Patrick J. Wong, Andrew K. Mitchell
We show that the Mott metal-insulator transition in the standard one-band Hubbard model can be understood as a topological phase transition. Our approach is inspired by the observa…
Fragility of the Kondo insulating gap against disorder: relevance to recent puzzles in topological Kondo insulators
Sudeshna Sen, N. S. Vidhyadhiraja, Eduardo Miranda +2
Kondo insulators are strongly correlated system in which a clean insulating gap emerges only at very low temperature due to many-body effects involving localized -electrons. How…
Emergence of non-Fermi liquid dynamics through non-local correlations in an interacting disordered system
Sudeshna Sen, N. S. Vidhyadhiraja, Mark Jarrell
We provide strong evidence of a quantum critical point (QCP) associated with the destruction of Kondo screening in the Anderson-Hubbard model for interacting electrons with quenche…
Pressure-induced melting of magnetic order and emergence of new quantum state in alpha-RuCl3
Zhe Wang, Jing Guo, F. F. Tafti +19
Here we report the observation of pressure-induced melting of antiferromagnetic (AFM) order and emergence of a new quantum state in the honeycomb-lattice halide alpha-RuCl3, a cand…
A local theory for Mott-Anderson localization
Sudeshna Sen, Hanna Terletska, Juana Moreno +2
The paramagnetic metallic phase of the Anderson-Hubbard model (AHM) is investigated using a non-perturbative local moment approach within the framework of dynamical mean field theo…
Quantum critical Mott transitions in a bilayer Kondo insulator-metal model system
Sudeshna Sen, N. S. Vidhyadhiraja
A bilayer system comprising a Kondo insulator coupled to a simple metal (KI-M) is considered. Employing the framework of dynamical mean field theory, the model system is shown to e…
Spectral changes in layered -electron systems induced by Kondo hole substitution in the boundary-layer
Sudeshna Sen, J. Moreno, M. Jarrell +1
We investigate the effect of disorder on the dynamical spectrum of layered -electron systems. With random dilution of -sites in a single Kondo insulating layer, we explore th…
Protocols for characterizing quantum transport through nano-structures
Sudeshna Sen, N. S. Vidhyadhiraja
In this work, we have analyzed the exact closed-form solutions for transport quantities through a mesoscopic region which may be characterized by a polynomial functional of resonan…