Spectral properties of Dirac electron system

2015 ◽  
Vol 460 ◽  
pp. 253-256 ◽  
Author(s):  
Ž. Bonačić Lošić
Keyword(s):  
Spectral Properties ◽  
Electron System ◽  
Dirac Electron

scholarly journals Ambient-pressure Dirac electron system in the quasi-two-dimensional molecular conductor α−(BETS)2I3

2021 ◽  
Vol 103 (3) ◽  
Author(s):  
Shunsuke Kitou ◽  
Takao Tsumuraya ◽  
Hikaru Sawahata ◽  
Fumiyuki Ishii ◽  
Ko-ichi Hiraki ◽  
...  
Keyword(s):  
Ambient Pressure ◽  
Electron System ◽  
Two Dimensional ◽  
Molecular Conductor ◽  
Dirac Electron

Single-component molecular conductor [Pt(dmdt)2]—a three-dimensional ambient-pressure molecular Dirac electron system

2019 ◽  
Vol 55 (23) ◽  
pp. 3327-3330 ◽  
Author(s):  
Biao Zhou ◽  
Shoji Ishibashi ◽  
Tatsuru Ishii ◽  
Takahiko Sekine ◽  
Ryosuke Takehara ◽  
...  
Keyword(s):  
Ambient Pressure ◽  
Three Dimensional ◽  
Electron System ◽  
Single Component ◽  
Nodal Lines ◽  
Molecular Conductor ◽  
System P ◽  
Dirac Electron

[Pt(dmdt)2], an air-stable single-component molecular conductor, contains massless Dirac electrons and carries Dirac nodal lines at ambient pressure.

scholarly journals Large Diamagnetism and Electromagnetic Duality in Two-Dimensional Dirac Electron System

2022 ◽  
Vol 128 (2) ◽  
Author(s):  
S. Fujiyama ◽  
H. Maebashi ◽  
N. Tajima ◽  
T. Tsumuraya ◽  
H-B. Cui ◽  
...  
Keyword(s):  
Electron System ◽  
Two Dimensional ◽  
Dirac Electron

scholarly journals Field-Angle Dependence of Interlayer Magnetoresistance in Organic Dirac Electron System α-(BEDT-TTF)2I3

Crystals ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 212 ◽  
Author(s):  
Takehiro Tani ◽  
Naoya Tajima ◽  
Akito Kobayashi
Keyword(s):  
Magnetic Field ◽  
Coulomb Interaction ◽  
Electron System ◽  
Landau Levels ◽  
Spin Splitting ◽  
Organic Conductor ◽  
Angle Dependence ◽  
Dirac Electron ◽  
The Magnetic Field ◽  
Theory And Experiments

The effect of the Coulomb interaction in interlayer magnetoresistance is elucidated in collaboration with theory and experiments for the Dirac electron system in organic conductor α -(BEDT-TTF) 2 I 3 under a strong magnetic field. It is found that the effective g-factor enhanced by Coulomb interaction depends on the angle of the magnetic field, resulting in the field-angle dependence of a characteristic magnetic field in which interlayer resistance has a minimum due to spin splitting N = 0 Landau levels. The qualitative agreement between the theory and experimental results for the field-angle dependence of interlayer magnetoresistance is obtained.

Coulomb impurity effect on electrically induced Dirac bound states in graphene

2015 ◽  
Vol 29 (06) ◽  
pp. 1550037 ◽  
Author(s):  
C. M. Lee ◽  
K. S. Chan
Keyword(s):  
Magnetic Field ◽  
Graphene Sheet ◽  
Electrostatic Potential ◽  
Bound States ◽  
Electron System ◽  
Monolayer Graphene ◽  
Impurity Effect ◽  
Absorption Coefficients ◽  
Dirac Electron ◽  
Positively Charged

Using the massless Dirac–Weyl model for monolayer graphene sheet, we study the low-lying spectra of a single Dirac electron system bound to an on-center positively charged Coulomb impurity, under both electrostatic potential and magnetic field. Numerical results obtained from diagonalization show that, the increase of the electrostatic potential causes the low-lying states to evolve from one Landau-type plateau to the higher ones, and the whole spectra exhibit similar features with slight shifts in eigenenergies when the on-center impurity is considered. Electrostatic-potential dependent optical spectra with their corresponding absorption coefficients as functions of incident photon energies for transitions between low-lying states are presented.

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