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Title: Protected helical transport in magnetically doped quantum wires: Beyond the one-dimensional paradigm

Abstract

One-dimensional (1D) quantum wires, which are functionalized by magnetic ad-atoms, can host ballistic helical transport. Helicity protects transport from an undesirable influence of material imperfections and makes the magnetically doped wire very promising elements for nanoelectronics and spintronics. However, fabricating purely 1D conductors is experimentally very challenging and not always feasible. In this paper, we show that the protected helical transport can exist even inquasi-1D wires. We model the quasi-1D magnetically doped wire as two coupled dense 1D Kondo chains. Each chain consists of itinerant electrons interacting with localized quantum magnetic moments - Kondo impurities. We have analyzed the regimes of weak-, intermediate- and strong inter-chain coupling and found conditions necessary for the origin of the aforementioned protected transport. Our results give a push for experimental realizations of the helical states in magnetically doped wires.

Authors:
 [1]; ORCiD logo [2];  [1]
  1. Ludwig Maximilian Univ. of Munich, Munich (Germany)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1668650
Report Number(s):
BNL-219875-2020-JAAM
Journal ID: ISSN 2469-9950
Grant/Contract Number:  
SC0012704
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 102; Journal Issue: 16; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Stäbler, Florian, Tsvelik, Alexei M., and Yevtushenko, Oleg M. Protected helical transport in magnetically doped quantum wires: Beyond the one-dimensional paradigm. United States: N. p., 2020. Web. doi:10.1103/physrevb.102.161102.
Stäbler, Florian, Tsvelik, Alexei M., & Yevtushenko, Oleg M. Protected helical transport in magnetically doped quantum wires: Beyond the one-dimensional paradigm. United States. doi:10.1103/physrevb.102.161102.
Stäbler, Florian, Tsvelik, Alexei M., and Yevtushenko, Oleg M. Tue . "Protected helical transport in magnetically doped quantum wires: Beyond the one-dimensional paradigm". United States. doi:10.1103/physrevb.102.161102.
@article{osti_1668650,
title = {Protected helical transport in magnetically doped quantum wires: Beyond the one-dimensional paradigm},
author = {Stäbler, Florian and Tsvelik, Alexei M. and Yevtushenko, Oleg M.},
abstractNote = {One-dimensional (1D) quantum wires, which are functionalized by magnetic ad-atoms, can host ballistic helical transport. Helicity protects transport from an undesirable influence of material imperfections and makes the magnetically doped wire very promising elements for nanoelectronics and spintronics. However, fabricating purely 1D conductors is experimentally very challenging and not always feasible. In this paper, we show that the protected helical transport can exist even inquasi-1D wires. We model the quasi-1D magnetically doped wire as two coupled dense 1D Kondo chains. Each chain consists of itinerant electrons interacting with localized quantum magnetic moments - Kondo impurities. We have analyzed the regimes of weak-, intermediate- and strong inter-chain coupling and found conditions necessary for the origin of the aforementioned protected transport. Our results give a push for experimental realizations of the helical states in magnetically doped wires.},
doi = {10.1103/physrevb.102.161102},
journal = {Physical Review B},
issn = {2469-9950},
number = 16,
volume = 102,
place = {United States},
year = {2020},
month = {10}
}

Journal Article:
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