scholarly journals Unconventional superconductivity near a flat band in organic and organometallic materials

2021 ◽  
Vol 103 (9) ◽  
Author(s):  
Jaime Merino ◽  
Manuel Fernández López ◽  
Ben J. Powell
Keyword(s):  
Flat Band ◽  
Unconventional Superconductivity ◽  
Organometallic Materials

Analyzing the interface trap density in SiGe capacitors using an abnormal flat band voltage shift at low temperature

2020 ◽  
Vol 13 (11) ◽  
pp. 111006
Author(s):  
Li-Chuan Sun ◽  
Chih-Yang Lin ◽  
Po-Hsun Chen ◽  
Tsung-Ming Tsai ◽  
Kuan-Ju Zhou ◽  
...  
Keyword(s):  
Low Temperature ◽  
Trap Density ◽  
Flat Band ◽  
Interface Trap Density ◽  
Interface Trap ◽  
Flat Band Voltage ◽  
Voltage Shift

scholarly journals Silicon Carbide-Gated Nanofluidic Membrane for Active Control of Electrokinetic Ionic Transport

Membranes ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 535
Author(s):  
Antonia Silvestri ◽  
Nicola Di Trani ◽  
Giancarlo Canavese ◽  
Paolo Motto Ros ◽  
Leonardo Iannucci ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Silicon Carbide ◽  
Power Consumption ◽  
Low Power ◽  
Electrochemical Impedance ◽  
Field Effect Transistors ◽  
External Control ◽  
Low Power Consumption ◽  
Flat Band ◽  
Ionic Field

Manipulation of ions and molecules by external control at the nanoscale is highly relevant to biomedical applications. We report a biocompatible electrode-embedded nanofluidic channel membrane designed for electrofluidic applications such as ionic field-effect transistors for implantable drug-delivery systems. Our nanofluidic membrane includes a polysilicon electrode electrically isolated by amorphous silicon carbide (a-SiC). The nanochannel gating performance was experimentally investigated based on the current-voltage (I-V) characteristics, leakage current, and power consumption in potassium chloride (KCl) electrolyte. We observed significant modulation of ionic diffusive transport of both positively and negatively charged ions under physical confinement of nanochannels, with low power consumption. To study the physical mechanism associated with the gating performance, we performed electrochemical impedance spectroscopy. The results showed that the flat band voltage and density of states were significantly low. In light of its remarkable performance in terms of ionic modulation and low power consumption, this new biocompatible nanofluidic membrane could lead to a new class of silicon implantable nanofluidic systems for tunable drug delivery and personalized medicine.

scholarly journals Gap generation and flat band catalysis in dice model with local interaction

2021 ◽  
Vol 103 (15) ◽  
Author(s):  
E. V. Gorbar ◽  
V. P. Gusynin ◽  
D. O. Oriekhov
Keyword(s):  
Local Interaction ◽  
Flat Band ◽  
Dice Model

Emerging flat bands in large-angle twisted bi-layer graphene under pressures

Nanoscale ◽  
2021 ◽  
Author(s):  
Liangbing Ge ◽  
Ni Kun ◽  
Xiaojun Wu ◽  
Zhengping Fu ◽  
Yalin Lu ◽  
...  
Keyword(s):  
Large Angle ◽  
Magic Angle ◽  
Unconventional Superconductivity ◽  
Flat Bands ◽  
Layer Graphene

Recent experiments on magic-angle twisted bi-layer graphene have attracted an intensive attention due to exotic properties such as unconventional superconductivity and correlated insulation. These phenomena were often found at a...

scholarly journals Flat-band topology of magic angle graphene on a transition metal dichalcogenide

2020 ◽  
Vol 102 (23) ◽  
Author(s):  
Tianle Wang ◽  
Nick Bultinck ◽  
Michael P. Zaletel
Keyword(s):  
Transition Metal ◽  
Flat Band ◽  
Magic Angle ◽  
Transition Metal Dichalcogenide

scholarly journals Fluctuation-frustrated flat band instabilities in NdNiO2

2020 ◽  
Vol 2 (3) ◽  
Author(s):  
Mi-Young Choi ◽  
Warren E. Pickett ◽  
Kwan-Woo Lee
Keyword(s):  
Flat Band

scholarly journals Interplay of disorder and interactions in a flat-band supporting diamond chain

2020 ◽  
Vol 2 (4) ◽  
Author(s):  
Nilanjan Roy ◽  
Ajith Ramachandran ◽  
Auditya Sharma
Keyword(s):  
Flat Band

scholarly journals Spectroscopy of a tunable moiré system with a correlated and topological flat band

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Xiaomeng Liu ◽  
Cheng-Li Chiu ◽  
Jong Yeon Lee ◽  
Gelareh Farahi ◽  
Kenji Watanabe ◽  
...  
Keyword(s):  
Band Structure ◽  
Twist Angle ◽  
Bilayer Graphene ◽  
Scanning Tunneling Spectroscopy ◽  
Scanning Tunneling ◽  
Flat Band ◽  
Correlated Electron ◽  
Partial Filling ◽  
Valley Polarization ◽  
Spectroscopic Signatures

AbstractMoiré superlattices created by the twisted stacking of two-dimensional crystals can host electronic bands with flat energy dispersion in which enhanced interactions promote correlated electron states. The twisted double bilayer graphene (TDBG), where two Bernal bilayer graphene are stacked with a twist angle, is such a moiré system with tunable flat bands. Here, we use gate-tuned scanning tunneling spectroscopy to directly demonstrate the tunability of the band structure of TDBG with an electric field and to show spectroscopic signatures of electronic correlations and topology for its flat band. Our spectroscopic experiments are in agreement with a continuum model of TDBG band structure and reveal signatures of a correlated insulator gap at partial filling of its isolated flat band. The topological properties of this flat band are probed with the application of a magnetic field, which leads to valley polarization and the splitting of Chern bands with a large effective g-factor.

scholarly journals Interplay of quantum phase transition and flat band in hybrid lattices

2020 ◽  
Vol 2 (3) ◽  
Author(s):  
Gui-Lei Zhu ◽  
Hamidreza Ramezani ◽  
Clive Emary ◽  
Jin-Hua Gao ◽  
Ying Wu ◽  
...  
Keyword(s):  
Phase Transition ◽  
Quantum Phase Transition ◽  
Quantum Phase ◽  
Flat Band
Sign in / Sign up

Export Citation Format

Share Document