Giant asymmetry of the longitudinal magnetoresistance in high-mobility two-dimensional electron gas on a cylindrical surface

A giant asymmetry in the magnetoresistance was revealed in high-mobility, two-dimensional electron gas on a cylindrical surface. The longitudinal resistance along the magnetic-field gradient impressed by the surface curvature was found to vanish if measured along one of the edges of the curved Hall bar. If the external magnetic field is reversed, then the longitudinal resistance vanishes at the opposite edge of the Hall bar. This asymmetry is analyzed quantitatively in terms of the Landauer-Buettiker formalism.

[1]  S. Mendach,et al.  Evenly curved two-dimensional electron systems in rolled-up Hall bars , 2006 .

[2]  M. Grayson,et al.  Influence of voltmeter impedance on quantum Hall measurements , 2004, cond-mat/0411518.

[3]  S. Mendach,et al.  Preparation of curved two-dimensional electron systems in InGaAs/GaAs-microtubes , 2004 .

[4]  S. Böhm,et al.  Curved two-dimensional electron gases , 2003 .

[5]  Alex Kleiner.  Chiral spin currents and quantum Hall effect in nanotubes , 2003 .

[6]  V. Prinz,et al.  Magnetotransport properties of two-dimensional electron gas on cylindrical surface , 2002, Proceedings. 3rd Annual Siberian Russian Workshop on Electron Devices and Materials.

[7]  V. Prinz,et al.  Directional rolling of strained heterofilms , 2002 .

[8]  O. Bierwagen,et al.  Conductance anisotropy of high-mobility, modulation-doped GaAs single quantum wells , 2002 .

[9]  A. Chaplik.  Some exact solutions for the classical Hall effect in an inhomogeneous magnetic field , 2000, cond-mat/0008272.

[10]  M. A. Putyato,et al.  Free-standing and overgrown InGaAs/GaAs nanotubes, nanohelices and their arrays , 2000 .

[11]  Alferov L. Esaki.  Nanostructures: Physics and Technology. 7th International Symposium. St. Petersburg, Russia, June 14-18, 1999 Proceedings , 1999 .

[12]  L. I. Magarill,et al.  Ballistic transport and spin-orbit interaction of two-dimensional electrons on a cylindrical surface , 1998 .

[13]  D. Ferry,et al.  Transport in nanostructures , 1999 .

[14]  Hey,et al.  New Concept for the Reduction of Impurity Scattering in Remotely Doped GaAs Quantum Wells. , 1996, Physical review letters.

[15]  Wang,et al.  Magnetotransport in a nonplanar two-dimensional electron gas. , 1995, Physical review. B, Condensed matter.

[16]  Müller.  Effect of a nonuniform magnetic field on a two-dimensional electron gas in the ballistic regime. , 1992, Physical review letters.

[17]  Büttiker,et al.  Four-terminal phase-coherent conductance. , 1986, Physical review letters.

[18]  R. C. T. da Costa,et al.  Quantum mechanics of a constrained particle , 1981 .