High-field magnetotransport and Fermi-surface topology in the novel quasi-two-dimensional organic conductor bis(ethylenedithiolo)tetrathiafulvalenium mercuric postassium thiocyanate, (BEDT-TTF)2KHg(SCN)4

1990 ◽  
Vol 41 (8) ◽  
pp. 5428-5431 ◽  
Author(s):  
T. Osada ◽  
R. Yagi ◽  
A. Kawasumi ◽  
S. Kagoshima ◽  
N. Miura ◽  
...  
Keyword(s):  
Fermi Surface ◽  
High Field ◽  
Surface Topology ◽  
The Novel ◽  
Two Dimensional ◽  
Organic Conductor ◽  
Fermi Surface Topology

scholarly journals Characteristic two-dimensional Fermi surface topology of high-Tc iron-based superconductors

2014 ◽  
Vol 4 (1) ◽  
Author(s):  
Masanori Sunagawa ◽  
Toshihiko Ishiga ◽  
Koji Tsubota ◽  
Taihei Jabuchi ◽  
Junki Sonoyama ◽  
...  
Keyword(s):  
Fermi Surface ◽  
Surface Topology ◽  
Two Dimensional ◽  
Iron Based Superconductors ◽  
High Tc ◽  
Fermi Surface Topology ◽  
Characteristic Two ◽  
Iron Based

FERMI SURFACE TOPOLOGY BY THE TWO DIMENSIONAL ANGULAR CORRELATION OF ANNIHILATION RADIATION : COPPER, A TEST CASE

1978 ◽  
Vol 39 (C6) ◽  
pp. C6-1084-C6-1085 ◽  
Author(s):  
A. A. Manuel ◽  
S. Samoilov ◽  
Ø. Fischer ◽  
M. Peter ◽  
A. P. Jeavons
Keyword(s):  
Fermi Surface ◽  
Angular Correlation ◽  
Surface Topology ◽  
Test Case ◽  
Annihilation Radiation ◽  
Two Dimensional ◽  
Fermi Surface Topology

scholarly journals Pseudogap and Fermi-Surface Topology in the Two-Dimensional Hubbard Model

2018 ◽  
Vol 8 (2) ◽  
Author(s):  
Wei Wu ◽  
Mathias S. Scheurer ◽  
Shubhayu Chatterjee ◽  
Subir Sachdev ◽  
Antoine Georges ◽  
...  
Keyword(s):  
Fermi Surface ◽  
Hubbard Model ◽  
Surface Topology ◽  
Two Dimensional ◽  
Fermi Surface Topology

Fermi Surface Topology and Electronic Structures of Two- Dimensional Organic Conductors Based on Bedt-TTF and Mdt-TTF

1992 ◽  
Vol 67 (1-4) ◽  
pp. 377-382 ◽  
Author(s):  
Toshikazu Nakamura ◽  
Gunzi Saito ◽  
Noboru Miura ◽  
Toshihito Osada ◽  
Seiichi Kagoshima ◽  
...  
Keyword(s):  
Fermi Surface ◽  
Electronic Structures ◽  
Organic Conductors ◽  
Surface Topology ◽  
Two Dimensional ◽  
Fermi Surface Topology

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.

HIGH FIELD PHASE DIAGRAM OF THE FIELD-INDUCED SUPERCONDUCTING STATE OF λ-(BETS)2FeCl4

2002 ◽  
Vol 16 (20n22) ◽  
pp. 3101-3104
Author(s):  
L. BALICAS ◽  
J. S. BROOKS ◽  
K. STORR ◽  
S. UJI ◽  
M. TOKUMOTO ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Superconducting State ◽  
Ground State ◽  
Electrical Transport ◽  
High Field ◽  
Two Dimensional ◽  
Exchange Field ◽  
Organic Conductor ◽  
Field Phase ◽  
Antiferromagnetic Ground State

We investigate by electrical transport the field-induced superconducting state (FISC) in the organic conductor λ- (BETS) 2 FeCl 4. Below 4 K, antiferromagnetic-insulator, metallic, and eventually superconducting (FISC) ground states are observed with increasing in-plane magnetic field. The FISC state survives between 18 and 41 T, and can be interpreted in terms of the Jaccarino-Peter effect, where the external magnetic field compensates the exchange field of aligned Fe 3+ ions. We further argue that the Fe 3+ moments are essential to stabilize the resulting singlet, two-dimensional superconducting state. Here we provide experimental evidence indicating that this state, as well as the insulating antiferromagnetic ground state, is extremely sensitive to hydrostatic pressure.

Pressure-induced change of the Fermi surface topology in Al-based solid solutions

2003 ◽  
Vol 45 (12) ◽  
pp. 2213-2217 ◽  
Author(s):  
A. S. Mikhailushkin ◽  
É. I. Isaev ◽  
Yu. Kh. Vekilov ◽  
S. I. Simak
Keyword(s):  
Fermi Surface ◽  
Solid Solutions ◽  
Surface Topology ◽  
Fermi Surface Topology
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