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Browsing Research Articles (Vidhyadhiraja N. S.) by Issue Date

Browsing Research Articles (Vidhyadhiraja N. S.) by Issue Date

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  • Kondo-hole substitution in heavy fermions: Dynamics and transport 
    Kumar, Pramod; Vidhyadhiraja, N. S. (American Physical Society, 2014)
    Kondo-hole substitution is a unique probe for exploring the interplay of interactions, f-electron dilution, and disorder in heavy-fermion materials. Within the diluted periodic Anderson model, we investigate the changes ...
  • Site-disorder driven superconductor-insulator transition: a dynamical mean field study 
    Kamar, Naushad Ahmad; Vidhyadhiraja, N. S. (IoP Publishing Ltd, 2014)
    We investigate the effect of site disorder on the superconducting state in the attractive Hubbard model within the framework of dynamical mean field theory. For a fixed interaction strength (U), the superconducting order ...
  • Preformed excitons, orbital selectivity, and charge density wave order in 1T-TiSe2 
    Koley, S.; Laad, M. S.; Vidhyadhiraja, N. S.; Taraphder, A. (American Physical Society, 2014)
    Traditional routes to charge density wave (CDW) in transition-metal dichalcogenides, relying on Fermi surface nesting or Jahn-Teller instabilities, have recently been brought into question. While this calls for exploration ...
  • Random Local Attraction Driven Metal-Superconductor Transition 
    Kamar, Naushad Ahmad; Vidhyadhiraja, N. S. (Physical Society of Japan, 2015)
    In this paper, we investigate the disordered attractive Hubbard model by combining dynamical mean field theory, coherent potential approximation and iterated perturbation theory for superconductivity as an impurity solver. ...
  • Finite-cluster typical medium theory for disordered electronic systems 
    Ekuma, C. E.; Moore, C.; Terletska, H.; Tam, K. -M.; Moreno, J.; Jarrell, M.; Vidhyadhiraja, N. S. (American Physical Society, 2015)
    We use the recently developed typical medium dynamical cluster (TMDCA) approach [Ekuma et al., Phys. Rev. B 89, 081107 (2014)] to perform a detailed study of the Anderson localization transition in three dimensions for the ...
  • Metal-insulator transition in a weakly interacting disordered electron system 
    Ekuma, C. E.; Yang, S. -X.; Terletska, H.; Tam, K. -M.; Vidhyadhiraja, N. S.; Moreno, J.; Jarrell, M. (American Physical Society, 2015)
    The interplay of interactions and disorder is studied using the Anderson-Hubbard model within the typical medium dynamical cluster approximation. Treating the interacting, nonlocal cluster self-energy [Sigma(c)[(g) over ...
  • Spectral changes in layered f-electron systems induced by Kondo hole substitution in the boundary layer 
    Sen, Sudeshna; Moreno, J.; Jarrell, M.; Vidhyadhiraja, N. S. (American Physical Society, 2015)
    We investigate the effect of disorder on the dynamical spectrum of layered f-electron systems. With random dilution of f sites in a single Kondo insulating layer, we explore the range and extent to which Kondo hole incoherence ...
  • Local theory for Mott-Anderson localization 
    Sen, Sudeshna; Terletska, Hanna; Moreno, Juana; Vidhyadhiraja, N. S.; Jarrell, Mark (American Physical Society, 2016)
    The paramagnetic metallic phase of the Anderson-Hubbard model (AHM) is investigated using a nonperturbative local moment approach within the framework of dynamical mean-field theory with a typical medium. Our focus is on ...
  • Quantum critical Mott transitions in a bilayer Kondo insulator-metal model system 
    Sen, Sudeshna; Vidhyadhiraja, N. S. (American Physical Society, 2016)
    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 exhibit a surface of quantum critical points ...
  • First-principles investigation of cubic BaRuO3: A Hund's metal 
    Dasari, Nagamalleswararao; Yamijala, S. R. K. C. Sharma; Jain, Manish; Dasgupta, T. Saha; Moreno, Juana; Jarrell, Mark; Vidhyadhiraja, N. S. (American Physical Society, 2016)
    A first-principles investigation of cubic BaRuO3, by combining density functional theory with dynamical mean-field theory and a hybridization expansion continuous time quantum Monte Carlo solver, has been carried out. ...
  • Random Field Driven Spatial Complexity at the Mott Transition in VO2 
    Liu, Shuo; Phillabaum, B.; Carlson, E. W.; Dahmen, K. A.; Vidhyadhiraja, N. S.; Qazilbash, M. M.; Basov, D. N. (American Physical Society, 2016)
    We report the first application of critical cluster techniques to the Mott metal-insulator transition in vanadium dioxide. We show that the geometric universal properties of the metallic and insulating puddles observed by ...
  • Feasibility of a metamagnetic transition in correlated systems 
    Acharya, Swagata; Medhi, Amal; Vidhyadhiraja, N. S.; Taraphder, A. (IoP Publishing Ltd, 2016)
    The long-standing issue of the competition between the magnetic field and the Kondo effect, favoring, respectively, triplet and singlet ground states, is addressed using a cluster slave-rotor mean-field theory for the ...

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