## Search

Now showing items 1-10 of 10

#### Ab-initio calculations of strain induced relaxed shape armchair graphene nanoribbon

(2019)

An odd number of zigzag edges in armchair graphene nanoribbons and their mechanical properties (e.g., Young's modulus, Poisson ratio and shear modulus) have potential interest for bandgap engineering in graphene based ...

#### Valley-dependent Lorentz force and Aharonov-Bohm phase in strained graphene p-n junction

(2019)

Veselago lens focusing in graphene p-n junction is promising for realizations of new generation electron optics devices. However, the effect of the strain-induced Aharonov-Bohm interference in a p-n junction has not been ...

#### Berry phase and spin precession without magnetic fields in semiconductor quantum dots

(2019)

We investigate electric field control of spin manipulation through Berry phase in III-V semiconductor quantum dots. By utilizing degenerate and non-degenerate perturbation theories, we diagonalize the total Hamiltonian of ...

#### Pseudospin lifetime in relaxed-shape armchair graphene nanoribbons due to in-plane phonon modes

(2016-01-01)

We study the influence of ripple waves on the band structures of strained armchair graphene nanoribbons. We argue that the Zeeman pseudospin (p-spin) splitting energy induced by ripple waves might not be neglected for ...

#### Tuning $g$-factor of electrons through spin-orbit coupling in GaAs/AlGaAs conical quantum dots

(2016-01-01)

We investigate band structures of (Formula presented.) three-dimensional conical quantum dots (QDs). In particular, we explore the influence of the Rashba and Dresselhaus spinâ€“orbit couplings in the variation of effective ...

#### Coupled magneto-thermo-electromechanical effects and electronic properties of quantum dots

(2013-12-31)

For the first time, we systemically analyze the influence of magneto-thermo-electromechanical effects on the band structure calculations by using the fully coupled model. We focus on three different types of quantum dots ...

#### Manipulation of single electron spin in a GaAs quantum dot through the application of geometric phases: The Feynman disentangling technique

(2010-12-31)

The spin of a single electron in an electrically defined quantum dot in a two-dimensional electron gas can be manipulated by moving the quantum dot adiabatically in a closed loop in the two-dimensional plane under the ...

#### Influence of electromechanical effects and wetting layers on band structures of AlN/GaN quantum dots and spin control

(2010-12-31)

In a series of recent papers we demonstrated that coupled electromechanical effects can lead to pronounced contributions in band structure calculations of low dimensional semiconductor nanostructures (LDSNs) such as quantum ...

#### Band structures of laterally coupled quantum dots, accounting for electromechanical effects

(2010-12-31)

In a series of recent papers we demonstrated that coupled electro-mechanical effects can lead to pronounced contributions in band structure calculations of low dimensional semiconductor nanostructures (LDSNs) such as quantum ...

#### Band structures of cylindrical AlN/GaN quantum dots with fully coupled piezoelectric models

(2010-12-31)

We study the coupled electro-mechanical effects in the band structure calculations of low dimensional semiconductor nanostructures (LDSNs) such as AlN/GaN quantum dots. Some effects in these systems are essentially nonlinear. ...