All-electric dual-QPC spin polarizer and analyzer

• Published in: 2009 9th IEEE Conference on Nanotechnology (IEEE-NANO) pp. 362 - 363
• Main Authors: Wan, J., Cahay, M., Debray, P., Newrock, R.S.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.07.2009
• Subjects: Electric variables measurement; Electrons; Filters; Green's function methods; Magnetic confinement; Magnetic field measurement; Magnetic fields; Optical polarization; Voltage; Wire

The ballistic conductance of a device consisting of two quantum point contacts, separated by a distance smaller than the spin coherence length, has been measured at 4.2K. A conductance plateau at 0.5 (2e 2 /h) is observed in the absence of external magnetic field indicating spontaneous spin polariza...