eprintid: 1566908
rev_number: 34
eprint_status: archive
userid: 608
dir: disk0/01/56/69/08
datestamp: 2017-07-28 12:50:31
lastmod: 2021-10-04 01:58:22
status_changed: 2017-07-28 12:50:31
type: article
metadata_visibility: show
creators_name: Yan, CY
creators_name: Kumar, SK
creators_name: Pepper, MP
creators_name: Thomas, KT
creators_name: See, PS
creators_name: Farrer, IF
creators_name: Ritchie, DR
creators_name: Griffiths, JG
creators_name: Jones, GJ
title: Direct observation of exchange-driven spin interactions in one-dimensional system
ispublished: pub
divisions: UCL
divisions: B04
divisions: C05
divisions: F46
divisions: C06
note: 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/).
abstract: 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.
date: 2017-07-24
date_type: published
publisher: American Institute of Physics
official_url: http://dx.doi.org/10.1063/1.4989374
oa_status: green
full_text_type: pub
language: eng
primo: open
primo_central: open_green
article_type_text: Article
verified: verified_manual
elements_id: 1406990
doi: 10.1063/1.4989374
lyricists_name: Kumar, Sanjeev
lyricists_name: Pepper, Michael
lyricists_name: Yan, Chengyu
lyricists_id: SKUMA71
lyricists_id: MPEPP38
lyricists_id: YANXX07
actors_name: Flynn, Bernadette
actors_id: BFFLY94
actors_role: owner
full_text_status: restricted
publication: Applied Physics Letters
volume: 111
number: 4
article_number: 042107
issn: 0003-6951
citation:        Yan, CY;    Kumar, SK;    Pepper, MP;    Thomas, KT;    See, PS;    Farrer, IF;    Ritchie, DR;         ... Jones, GJ; + view all <#>        Yan, CY;  Kumar, SK;  Pepper, MP;  Thomas, KT;  See, PS;  Farrer, IF;  Ritchie, DR;  Griffiths, JG;  Jones, GJ;   - view fewer <#>    (2017)    Direct observation of exchange-driven spin interactions in one-dimensional system.                   Applied Physics Letters , 111  (4)    , Article 042107.  10.1063/1.4989374 <https://doi.org/10.1063/1.4989374>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/1566908/1/Yan_Direct_observation_exchange-driven_VoR.pdf
document_url: https://discovery.ucl.ac.uk/id/eprint/1566908/8/Yan_Direct_observation_exchange-driven_Suppl.pdf