Fermi surface, superconducting gap, and many-body effects in Bi2Sr2Can−1CunO2n+4 (n=1–3)

2004 ◽  
Vol 408-410 ◽  
pp. 812-813
Author(s):  
T. Sato ◽  
H. Matsui ◽  
T. Takahashi ◽  
H. Ding ◽  
H.-B. Yang ◽  
...  
Keyword(s):  
Fermi Surface ◽  
Superconducting Gap ◽  
Many Body ◽  
Many Body Effects

Gain characteristics of GaN quantum wells including many body effects

1995 ◽  
Vol 31 (14) ◽  
pp. 1149 ◽  
Author(s):  
P. Rees ◽  
C. Cooper ◽  
P. Blood ◽  
P.M. Smowton ◽  
J. Hegarty
Keyword(s):  
Quantum Wells ◽  
Many Body ◽  
Many Body Effects

scholarly journals Ultrafast dynamical Lifshitz transition

2021 ◽  
Vol 7 (17) ◽  
pp. eabd9275
Author(s):  
Samuel Beaulieu ◽  
Shuo Dong ◽  
Nicolas Tancogne-Dejean ◽  
Maciej Dendzik ◽  
Tommaso Pincelli ◽  
...  
Keyword(s):  
Fermi Surface ◽  
Colossal Magnetoresistance ◽  
Surface Topology ◽  
Strongly Correlated ◽  
Many Body ◽  
Time Resolved ◽  
Weyl Semimetal ◽  
Lifshitz Transition ◽  
Fermi Surface Topology ◽  
Many Body Systems

Fermi surface is at the heart of our understanding of metals and strongly correlated many-body systems. An abrupt change in the Fermi surface topology, also called Lifshitz transition, can lead to the emergence of fascinating phenomena like colossal magnetoresistance and superconductivity. While Lifshitz transitions have been demonstrated for a broad range of materials by equilibrium tuning of macroscopic parameters such as strain, doping, pressure, and temperature, a nonequilibrium dynamical route toward ultrafast modification of the Fermi surface topology has not been experimentally demonstrated. Combining time-resolved multidimensional photoemission spectroscopy with state-of-the-art TDDFT+U simulations, we introduce a scheme for driving an ultrafast Lifshitz transition in the correlated type-II Weyl semimetal Td-MoTe2. We demonstrate that this nonequilibrium topological electronic transition finds its microscopic origin in the dynamical modification of the effective electronic correlations. These results shed light on a previously unexplored ultrafast scheme for controlling the Fermi surface topology in correlated quantum materials.

scholarly journals Theoretical description of optical and x-ray absorption spectra of MgO including many-body effects

2021 ◽  
Vol 103 (19) ◽  
Author(s):  
Vijaya Begum ◽  
Markus E. Gruner ◽  
Christian Vorwerk ◽  
Claudia Draxl ◽  
Rossitza Pentcheva
Keyword(s):  
Absorption Spectra ◽  
Theoretical Description ◽  
Many Body ◽  
X Ray ◽  
Many Body Effects ◽  
X Ray Absorption

scholarly journals Many-body effects on the Rashba-type spin splitting in bulk bismuth tellurohalides

2013 ◽  
Vol 87 (20) ◽  
Author(s):  
I. P. Rusinov ◽  
I. A. Nechaev ◽  
S. V. Eremeev ◽  
C. Friedrich ◽  
S. Blügel ◽  
...  
Keyword(s):  
Spin Splitting ◽  
Many Body ◽  
Many Body Effects
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