Absence of effects of an in-plane magnetic field in a quasi-two-dimensional electron system

作者：Brandt F T; Sanchez Monroy J A^*

来源：International Journal of Modern Physics B, 2018, 32(8): 1850083.

DOI：10.1142/S0217979218500832

• Confining potential formalism
• Dirac equation
• Pauli equation
• tilted magnetic field
• chiral magnetic effect

The dynamics of a quasi-two-dimensional electron system (q2DES) in the presence of a tilted magnetic field is reconsidered employing the thin-layer method. We derive the effective equations for relativistic and nonrelativistic q2DESs. Through a perturbative expansion, we show that while the magnetic length is much greater than the confinement width, the in-plane magnetic field only affects the particle dynamics through the spin. Therefore, effects due to an in-plane magnetic vector potential reported previously in the literature for 2D quantum rings, 2D quantum dots and graphene are fictitious. In particular, the so-called pseudo chiral magnetic effect recently proposed in graphene is not realistic.

• 出版日期2018-3-30