Harold Y. Hwang

About

Harold Y. Hwang is the Shadi and Omid Farokhzad Professor of Applied Physics at Stanford University. His research interests encompass condensed matter physics, with a focus on probing correlated electrons at artificial interfaces and in confined systems. He specializes in atomic scale synthesis and control of complex oxide heterostructures, low-dimensional superconductivity, and developing novel devices based on interface states in oxides. His work involves exploring materials physics through advanced experimental techniques to understand and manipulate electronic properties at the nanoscale, contributing to the fields of nanoscience and quantum engineering.

Research topics

• Materials science
• Physics
• Chemistry
• Crystallography
• Condensed matter physics
• Biochemistry
• Composite material
• Biology
• Nanotechnology
• Metallurgy

Selected publications

• Superconducting Dome in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>Nd</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mi>Sr</mml:mi></mml:mrow><mml:mrow><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mi>NiO</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math> Infinite Layer Films

  Physical Review Letters · 2020 · 346 citations

  Senior authorCorresponding

  We report the phase diagram of Nd_{1-x}Sr_{x}NiO_{2} infinite layer thin films grown on SrTiO_{3}. A superconducting dome spanning 0.125<x<0.25 is found, remarkably similar to cuprates, albeit over a narrower doping window. However, while cuprate superconductivity is bounded by an insulator for underdoping and a metal for overdoping, here we observe weakly insulating behavior on either side of the dome. Furthermore, the normal state Hall coefficient is always small and proximate to a continuous…

  DOI

• A Superconducting Praseodymium Nickelate with Infinite Layer Structure

  Nano Letters · 2020 · 296 citations

  Senior authorCorresponding

  planes, which will enable systematic investigation of the superconducting and normal state properties and their underlying mechanisms.

  DOI

• Extreme tensile strain states in La _0.7 Ca _0.3 MnO ₃ membranes

  Science · 2020 · 279 citations

  Senior authorCorresponding

  with staggered strain-enhanced Jahn-Teller distortions within the plane. This highly tunable strained membrane approach provides a broad opportunity to design and manipulate correlated electron states.

  PublisherOA PDFDOI

• Superconductivity and normal-state transport in compressively strained La2PrNi2O7 thin films

  Nature Materials · 2025-05-29 · 36 citations

  preprintOpen accessSenior author
  PublisherOA PDFDOI

• Electron ptychography reveals a ferroelectricity dominated by anion displacements

  Nature Materials · 2025-04-23 · 14 citations

  article
  PublisherDOI

Frequent coauthors

• Yasuyuki Hikita

  Nitto (Japan)

  348 shared

• Christopher Bell

  University of Bristol

  203 shared

• Kyuho Lee

  130 shared

• Bai Yang Wang

  SLAC National Accelerator Laboratory

  124 shared

• Motoki Osada

  SLAC National Accelerator Laboratory

  116 shared

• Danfeng Li

  City University of Hong Kong

  112 shared

• Lena F. Kourkoutis

  Cornell University

  106 shared

• Yi Cui

  Stanford University

  90 shared

Labs

• Hwang LabPI

  Research on oxide thin films, electrochemistry, and energy-related applications

Education

• Ph.D., Applied Physics

  Stanford University

  1990

• M.S., Applied Physics

  Stanford University

  1986

• B.S., Physics

  California Institute of Technology

  1982

Similar researchers at Stanford University

• Shanhui Fanh-156
• Tony Heinzh-148
• Robert L. Byerh-106