TY  - JOUR
ID  - discovery1566908
N2  - We present experimental results of transverse electron focusing measurements performed on an n-type GaAs based mesoscopic device consisting of one-dimensional (1D) quantum wires as injector and detector. We show that non-adiabatic injection of 1D electrons at a conductance of e 2 h  
e2h
 results in a single first focusing peak, which transforms into two asymmetric sub-peaks with a gradual increase in the injector conductance up to 2e 2 h  
2e2h
, each sub-peak representing the population of spin-state arising from the spatially separated spins in the injector. Further increasing the conductance flips the spin-states in the 1D channel, thus reversing the asymmetry in the sub-peaks. On applying a source-drain bias, the spin-gap, so obtained, can be resolved, thus providing evidence of exchange interaction induced spin polarization in the 1D systems.
SN  - 0003-6951
UR  - http://dx.doi.org/10.1063/1.4989374
PB  - American Institute of Physics
JF  - Applied Physics Letters
A1  - Yan, CY
A1  - Kumar, SK
A1  - Pepper, MP
A1  - Thomas, KT
A1  - See, PS
A1  - Farrer, IF
A1  - Ritchie, DR
A1  - Griffiths, JG
A1  - Jones, GJ
TI  - Direct observation of exchange-driven spin interactions in one-dimensional system
Y1  - 2017/07/24/
AV  - restricted
VL  - 111
N1  - Copyright © 2017 Author(s). All article content,
except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license
(http://creativecommons.org/licenses/by/4.0/).
IS  - 4
ER  -