Quasiballistic quantum transport through Ge/Si core/shell nanowires

Kotekar-Patil, D.; Nguyen, B-M; Yoo, J.; Dayeh, S. A.; Frolov, S. M.

doi:10.1088/1361-6528/aa7f82

Title: Quasiballistic quantum transport through Ge/Si core/shell nanowires

Abstract

We study signatures of ballistic quantum transport of holes through Ge/Si core/shell nanowires at low temperatures. We observe Fabry–Pérot interference patterns as well as conductance plateaus at integer multiples of 2e ²/h at zero magnetic field. Magnetic field evolution of these plateaus reveals relatively large effective Landé g-factors. Ballistic effects are observed in nanowires with silicon shell thickness of 1–3 nm, but not in bare germanium wires. These findings inform the future development of spin and topological quantum devices which rely on ballistic sub-band-resolved transport.

Authors:

^[1]; Nguyen, B-M ^[2]; Yoo, J. ^[2]; Dayeh, S. A. ^[3]; Frolov, S. M. ^[1]

Univ. of Pittsburgh, PA (United States)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Univ. of California, San Diego, CA (United States)

Publication Date:: Mon Sep 04 00:00:00 EDT 2017

Research Org.:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Org.:: USDOE Office of Science (SC). Basic Energy Sciences (BES) (SC-22)

OSTI Identifier:: 1425762

Report Number(s):: LA-UR-17-26870
Journal ID: ISSN 0957-4484

Grant/Contract Number:: AC52-06NA25396

Resource Type:: Accepted Manuscript

Journal Name:: Nanotechnology

Additional Journal Information:: Journal Volume: 28; Journal Issue: 38; Journal ID: ISSN 0957-4484

Publisher:: IOP Publishing

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING; Material Science

Citation Formats


                    Kotekar-Patil, D., Nguyen, B-M, Yoo, J., Dayeh, S. A., and Frolov, S. M. Quasiballistic quantum transport through Ge/Si core/shell nanowires.  United States: N. p., 2017. 
Web.  doi:10.1088/1361-6528/aa7f82.

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                    Kotekar-Patil, D., Nguyen, B-M, Yoo, J., Dayeh, S. A., & Frolov, S. M. Quasiballistic quantum transport through Ge/Si core/shell nanowires.  United States.  https://doi.org/10.1088/1361-6528/aa7f82

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                    Kotekar-Patil, D., Nguyen, B-M, Yoo, J., Dayeh, S. A., and Frolov, S. M. Mon .  
"Quasiballistic quantum transport through Ge/Si core/shell nanowires".  United States.  https://doi.org/10.1088/1361-6528/aa7f82.  https://www.osti.gov/servlets/purl/1425762.

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@article{osti_1425762,

  title        = {Quasiballistic quantum transport through Ge/Si core/shell nanowires},

  author       = {Kotekar-Patil, D. and Nguyen, B-M and Yoo, J. and Dayeh, S. A. and Frolov, S. M.},

  abstractNote = {We study signatures of ballistic quantum transport of holes through Ge/Si core/shell nanowires at low temperatures. We observe Fabry–Pérot interference patterns as well as conductance plateaus at integer multiples of 2e 2/h at zero magnetic field. Magnetic field evolution of these plateaus reveals relatively large effective Landé g-factors. Ballistic effects are observed in nanowires with silicon shell thickness of 1–3 nm, but not in bare germanium wires. These findings inform the future development of spin and topological quantum devices which rely on ballistic sub-band-resolved transport.},

  doi          = {10.1088/1361-6528/aa7f82},

  journal      = {Nanotechnology},

  number       = 38,

  volume       = 28,

  place        = {United States},

  year         = {Mon Sep 04 00:00:00 EDT 2017},

  month        = {Mon Sep 04 00:00:00 EDT 2017}

}

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https://doi.org/10.1088/1361-6528/aa7f82

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Title: Quasiballistic quantum transport through Ge/Si core/shell nanowires

Abstract

Citation Formats

Spin–orbit qubit in a semiconductor nanowire journal, December 2010

Electrical control of single hole spins in nanowire quantum dots journal, February 2013

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Pauli spin blockade in CMOS double quantum dot devices: Pauli spin blockade in CMOS double quantum dot devices journal, February 2017

A CMOS silicon spin qubit journal, November 2016

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Hole Spin Coherence in a Ge/Si Heterostructure Nanowire journal, May 2014

Signatures of Majorana Fermions in Hybrid Superconductor-Semiconductor Nanowire Devices journal, April 2012

Exponential protection of zero modes in Majorana islands journal, March 2016

Strong spin-orbit interaction and helical hole states in Ge/Si nanowires journal, November 2011

A Ge/Si heterostructure nanowire-based double quantum dot with integrated charge sensor journal, September 2007

Strong and Tunable Spin−Orbit Coupling of One-Dimensional Holes in Ge/Si Core/Shell Nanowires journal, August 2010

Anisotropic Pauli spin blockade in hole quantum dots journal, July 2016

Magnetic field evolution of spin blockade in Ge/Si nanowire double quantum dots journal, April 2017

Majorana fermions in Ge/Si hole nanowires journal, November 2014

Tunable g factor and phonon-mediated hole spin relaxation in Ge/Si nanowire quantum dots journal, April 2013

Ge/Si nanowire mesoscopic Josephson junctions journal, December 2006

Electric-field dependent g -factor anisotropy in Ge-Si core-shell nanowire quantum dots journal, March 2016

Boosting Hole Mobility in Coherently Strained [110]-Oriented Ge–Si Core–Shell Nanowires journal, February 2017

Quantized Conductance in an InSb Nanowire journal, December 2012

One-dimensional hole gas in germanium/silicon nanowire heterostructures journal, July 2005

Multimode Fabry-Pérot Conductance Oscillations in Suspended Stacking-Faults-Free InAs Nanowires journal, September 2010

Diameter-Independent Hole Mobility in Ge/Si Core/Shell Nanowire Field Effect Transistors journal, January 2014

Advanced core/multishell germanium/silicon nanowire heterostructures: Morphology and transport journal, April 2011

Advanced core/multishell germanium/silicon nanowire heterostructures: The Au-diffusion bottleneck journal, July 2011

Direct Measurement of Coherency Limits for Strain Relaxation in Heteroepitaxial Core/Shell Nanowires journal, October 2012

Single-crystal metallic nanowires and metal/semiconductor nanowire heterostructures journal, July 2004

(Invited) Nanoscale Heterogeneous Reactions and Interfaces in Ge/Si and for III-V on Si Integrated Devices journal, August 2013

Possible Spin Polarization in a One-Dimensional Electron Gas journal, July 1996

Low-Temperature Fate of the 0.7 Structure in a Point Contact: A Kondo-like Correlated State in an Open System journal, May 2002

Density-Dependent Spin Polarization in Ultra-Low-Disorder Quantum Wires journal, November 2002

Evidence for localization and 0.7 anomaly in hole quantum point contacts journal, September 2010

Spin-resolved quantum interference in graphene journal, October 2009

Anomalous Conductance Quantization in Carbon Nanotubes journal, January 2005

Josephson Effect in a Few-Hole Quantum Dot journal, September 2018

Carrier control in 2D transition metal dichalcogenides with Al2O3 dielectric journal, June 2019

Single layer MoS 2 nanoribbon field effect transistor journal, January 2019

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Spin–orbit qubit in a semiconductor nanowire
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Electrical control of single hole spins in nanowire quantum dots
journal, February 2013

A two-qubit logic gate in silicon
journal, October 2015

Pauli spin blockade in CMOS double quantum dot devices: Pauli spin blockade in CMOS double quantum dot devices
journal, February 2017

A CMOS silicon spin qubit
journal, November 2016

Pauli blockade in a few-hole PMOS double quantum dot limited by spin-orbit interaction
journal, November 2016

Hole Spin Coherence in a Ge/Si Heterostructure Nanowire
journal, May 2014

Signatures of Majorana Fermions in Hybrid Superconductor-Semiconductor Nanowire Devices
journal, April 2012

Exponential protection of zero modes in Majorana islands
journal, March 2016

Strong spin-orbit interaction and helical hole states in Ge/Si nanowires
journal, November 2011

A Ge/Si heterostructure nanowire-based double quantum dot with integrated charge sensor
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Strong and Tunable Spin−Orbit Coupling of One-Dimensional Holes in Ge/Si Core/Shell Nanowires
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Anisotropic Pauli spin blockade in hole quantum dots
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Magnetic field evolution of spin blockade in Ge/Si nanowire double quantum dots
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Majorana fermions in Ge/Si hole nanowires
journal, November 2014

Tunable $g$ factor and phonon-mediated hole spin relaxation in Ge/Si nanowire quantum dots
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Ge/Si nanowire mesoscopic Josephson junctions
journal, December 2006

Electric-field dependent $g$ -factor anisotropy in Ge-Si core-shell nanowire quantum dots
journal, March 2016

Boosting Hole Mobility in Coherently Strained [110]-Oriented Ge–Si Core–Shell Nanowires
journal, February 2017

Quantized Conductance in an InSb Nanowire
journal, December 2012

One-dimensional hole gas in germanium/silicon nanowire heterostructures
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Multimode Fabry-Pérot Conductance Oscillations in Suspended Stacking-Faults-Free InAs Nanowires
journal, September 2010

Diameter-Independent Hole Mobility in Ge/Si Core/Shell Nanowire Field Effect Transistors
journal, January 2014

Advanced core/multishell germanium/silicon nanowire heterostructures: Morphology and transport
journal, April 2011

Advanced core/multishell germanium/silicon nanowire heterostructures: The Au-diffusion bottleneck
journal, July 2011

Direct Measurement of Coherency Limits for Strain Relaxation in Heteroepitaxial Core/Shell Nanowires
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journal, July 2004

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journal, August 2013

Possible Spin Polarization in a One-Dimensional Electron Gas
journal, July 1996

Low-Temperature Fate of the 0.7 Structure in a Point Contact: A Kondo-like Correlated State in an Open System
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journal, November 2002

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