Zobrazeno 1 - 10
of 61
pro vyhledávání: '"N. S. Vidhyadhiraja"'
Publikováno v:
Physical Review Research, Vol 2, Iss 3, p 033370 (2020)
Kondo insulators are strongly correlated systems in which a clean insulating gap emerges only at very low temperature due to many-body effects involving localized f electrons. However, certain Kondo insulators, like SmB_{6} and Ce_{3}Bi_{4}Pt_{3}, di
Externí odkaz:
https://doaj.org/article/f02b3548ff7c4f8394b768a7a79737fa
Autor:
Hanna Terletska, Yi Zhang, Ka-Ming Tam, Tom Berlijn, Liviu Chioncel, N. S. Vidhyadhiraja, Mark Jarrell
Publikováno v:
Applied Sciences, Vol 8, Iss 12, p 2401 (2018)
Great progress has been made in recent years towards understanding the properties of disordered electronic systems. In part, this is made possible by recent advances in quantum effective medium methods which enable the study of disorder and electron-
Externí odkaz:
https://doaj.org/article/ec9fcdbfbadc4f7198573ef9bed89317
Autor:
Siddhartha Patra, Abhirup Mukherjee, Anirban Mukherjee, N S Vidhyadhiraja, A Taraphder, Siddhartha Lal
We study the overscreened multi-channel Kondo (MCK) model using the recently developed unitary renormalization group (URG) technique. Our results display the importance of ground state degeneracy in explaining various important properties like the br
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::65c990ba05585a4f81d07fcaead0786f
http://arxiv.org/abs/2205.00790
http://arxiv.org/abs/2205.00790
Publikováno v:
Physical Review B. 105
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::013584069b29bfa1aab2ba4912dfa157
https://doi.org/10.1103/physrevb.105.085119
https://doi.org/10.1103/physrevb.105.085119
Local quantum criticality in itinerant fermion systems has been extensively investigated through the soft-gap Anderson impurity model, wherein a localized, correlated impurity, hybridizes with a broad conduction band with a singular, $|\omega|^r$, de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::60673844f1db89cdec178dc08f5cdef3
Autor:
Liviu Chioncel, Juana Moreno, Hanna Terletska, N. S. Vidhyadhiraja, A. Moilanen, Markus Eisenbach, Yi Zhang, Yang Wang, Ka-Ming Tam
We use the recently developed finite cluster typical medium approach to study the Anderson localization transition in three dimensions. Applying our method to the box and binary alloy disorder distributions, we find a fast convergence with the cluste
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ede0d649eec045c085e699665354fa75
Autor:
Wasim Raja Mondal, N. S. Vidhyadhiraja
We investigate the effect of spatially correlated disorder on the Anderson transition of phonons in three dimensions using a Greens function based approach, namely, the typical medium dynamical cluster approximation (TMDCA), in mass-disordered system
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d09e86e81d2868ba9a2d969692eb8f47
http://arxiv.org/abs/2010.00068
http://arxiv.org/abs/2010.00068
We report the development and application of a method for carrying out computational investigations of the effects of mass and force-constant (FC) disorder on phonon spectra. The method is based on the recently developed typical medium dynamical clus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bd8eca4ef2baa6dabcb2434a2bcc8108
http://arxiv.org/abs/1904.05324
http://arxiv.org/abs/1904.05324
Autor:
Mark Jarrell, Unjong Yu, Wei Ku, Yi Zhang, N. S. Vidhyadhiraja, Ryky Nelson, Ka-Ming Tam, Tom Berlijn, Hanna Terletska, Juana Moreno
Publikováno v:
Physical Review B. 98
Intermediate band semiconductors hold the promise to significantly improve the efficiency of solar cells but only if the intermediate impurity band is metallic. We apply a recently developed first principles method to investigate the origin of electr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::95322f7ff5fa1c050bdbb22be1ddbd43
https://doi.org/10.1103/physrevb.98.174204
https://doi.org/10.1103/physrevb.98.174204
The effect of disorder on lattice vibrational modes has been a topic of interest for several decades. In this work, we employ a Green's function based approach, namely the dynamical cluster approximation (DCA), to investigate phonons in mass disorder
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7eb887b21a3f179babfafc94a0dd6a4a