Publications (9)
Coexisting pseudogap, charge transfer gap, and Mott gap energy scales in the resonant inelastic x-ray scattering spectra of electron-doped cuprates
Susmita Basak, Tanmoy Das, Hsin Lin +3
We present a computation of Cu K-edge resonant inelastic x-ray scattering (RIXS) spectra for electron-doped cuprates which includes coupling to bosonic fluctuations. Comparison wit…
Intermediate coupling model of cuprates: adding fluctuations to a weak coupling model of pseudogap and superconductuctivity competition
R. S. Markiewicz, Tanmoy Das, Susmita Basak +1
We demonstrate that many features ascribed to strong correlation effects in various spectroscopies of the cuprates are captured by a calculation of the self-energy incorporating ef…
Novel Spin-texture on the warped Dirac-cone surface states in topological insulators
Susmita Basak, Hsin Lin, L. A. Wray +4
We have investigated the nature of surface states in the Bi2Te3 family of three-dimensional topological insulators using first-principles calculations as well as model Hamiltonians…
Observation of Quantum-Tunneling Modulated Spin Texture in Ultrathin Topological Insulator Bi2Se3 Films
Madhab Neupane, Anthony Richardella, Jaime Sánchez-Barriga +18
Understanding the spin-texture behavior of boundary modes in ultrathin topological insulator films is critically essential for the design and fabrication of functional nano-devices…
Unconventional transformation of spin Dirac phase across a topological quantum phase transition
Su-Yang Xu, Madhab Neupane, Ilya Belopolski +15
The topology of a topological material can be encoded in its surface states. These surface states can only be removed by a bulk topological quantum phase transition into a trivial…
Lindhard and RPA susceptibility computations in extended momentum space in electron doped cuprates
Yung Jui Wang, B. Barbiellini, Hsin Lin +6
We present an approximation for efficient calculation of the Lindhard susceptibility in a periodic system through the use of simple products of real space functions…
Electron dynamics in topological insulator based semiconductor-metal interfaces (topological p-n interface based on Bi2Se3 class)
L. Andrew Wray, Suyang Xu, Madhab Neupane +10
Single-Dirac-cone topological insulators (TI) are the first experimentally discovered class of three dimensional topologically ordered electronic systems, and feature robust, massl…
Automatic generation of input files with optimised k-point meshes for Quantum Espresso self-consistent field single point total energy calculations
Elena Patyukova, Junwen Yin, Susmita Basak +3
Performing density functional theory (DFT) calculations requires a careful choice of computational parameters to ensure convergence and obtain meaningful results. This represents a…
Origin of the high-energy kink or the waterfall effect in the photoemission spectrum of the high-temperature superconductor
Susmita Basak, Tanmoy Das, Hsin Lin +4
The high-energy kink or the waterfall effect seen in the photoemission spectra of the cuprates is suggestive of the coupling of the quasiparticles to a high energy bosonic mode wit…