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  • © 2017

Layered Two-Dimensional Heterostructures and Their Tunneling Characteristics

  • Nominated as an outstanding Ph.D. thesis by Carnegie Mellon University
  • Focuses on the timely topic of interlayer transport phenomena in two-dimensional materials
  • Describes a theory, illustrated with examples, for computing tunneling currents between two-dimensional crystals around a thin insulating barrier
  • Provides an introduction to the field whilst demonstrating interesting new results via theoretical and experimental perspectives

Part of the book series: Springer Theses (Springer Theses)

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Table of contents (10 chapters)

  1. Front Matter

    Pages i-xvii
  2. Introduction

    • Sergio C. de la Barrera
    Pages 1-15
  3. Experimental Methods

    • Sergio C. de la Barrera
    Pages 17-30
  4. Theoretical Background

    • Sergio C. de la Barrera
    Pages 73-85
  5. Tunneling Between Bilayers of Graphene

    • Sergio C. de la Barrera
    Pages 107-116
  6. Progress Toward 2D Tunneling Devices

    • Sergio C. de la Barrera
    Pages 117-122
  7. Conclusions

    • Sergio C. de la Barrera
    Pages 123-124
  8. Back Matter

    Pages 125-141

About this book

This thesis demonstrates that layered heterostructures of two-dimensional crystals graphene, hexagonal boron nitride, and transition metal dichalcogenides provide new and interesting interlayer transport phenomena. Low-energy electron microscopy is employed to study the surface of atomically thin WSe2 prepared by metal-organic chemical vapor deposition on epitaxial graphene substrates, and a method for unambiguously measuring the number of atomic layers is presented. Using very low-energy electrons to probe the surface of similar heterostructures, a relationship between extracted work function differences from the layers and the nature of the electrical contact between them is revealed. An extension of this analysis is applied to surface studies of MoSe2 prepared by molecular beam epitaxy on epitaxial graphene. A large work function difference is measured between the MoSe2 and graphene, and a model is provided which suggests that this observation results from an exceptional defect density in the MoSe2 film. The thesis expounds a theory for computing tunneling currents between two-dimensional crystals separated by a thin insulating barrier; a few situations resulting in resonant tunneling and negative differential resistance are illustrated by computed examples, as well as observed characteristics, for monolayer and bilayer graphene tunneling junctions and transistors.

Authors and Affiliations

  • Department of Physics, Carnegie Mellon University, Pittsburgh, USA

    Sergio C. de la Barrera

About the author

Sergio de la Berrera holds a postdoctoral research position at Carnegie Mellon University, from where he also obtained his PhD.

Bibliographic Information

Buy it now

Buying options

eBook USD 84.99
Price excludes VAT (USA)
  • Available as EPUB and PDF
  • Read on any device
  • Instant download
  • Own it forever
Softcover Book USD 109.99
Price excludes VAT (USA)
  • Compact, lightweight edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info
Hardcover Book USD 109.99
Price excludes VAT (USA)
  • Durable hardcover edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Other ways to access