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Dr James Gott

Background

I graduated from the University of Warwick in 2016 with a BSc MPhys in Physics. I then worked on my PhD project, "Atomic Resolution Structure and Spectroscopy of Semiconducting Nanowires", under the supervision of Prof. Ana Sanchez and Prof. Richard Beanland.

I am currently working as a postdoc on the project "Electric Fields by 4D scanning transmission electron microscopy" led by Prof. Ana Sanchez, Prof. Richard Beanland, Prof. Marin Alexe and Dr Vishal Shah.

Interests

My current work uses advanced electron microscopy techniques to study a range of nano materials.

My PhD work looked to characterise III-V semiconducting nanowires (NWs). Systems examined included GaAsxP1-x/GaAs core-shell structures, quantum dot structures and quantum well structures.

Techniques used include: STEM (BF, ABF, ADF, and HAADF), TEM, SEM, EDX, EELS, FIB (for sample preparation), microtome (sample preparation), and cathodoluminescence (CL). I also have experience preparing samples for and using DENS Solutions heating and heating/biasing in-situ MEMS chips.

Examples

Images of defective nanowires

Stable Defects in Semiconductor Nanowires

Defect Dynamics in Self-Catalyzed III-V Semiconductor Nanowires

Publications

Conferences

  • MSM 2017, Oxford, UK (Poster) - "Stable Linear Defects in GaAsP Core-Shell Nanowires"
  • MMC 2017, Manchester, UK (Flash talk + Poster) - "Interface Analysis of GaAsP/GaAs Axial Nanowire Quantum Dots"
  • EMAG 2018, Warwick, UK (Poster) - "III-V Nanowires with Stable Defects at High Temperatures"
  • MSM 2019, Cambridge, UK (Talk + Poster) - "In-Situ Observation of Σ3 {112} Twin Boundary Motion at Atomic Resolution in III-V Nanowires"
  • E-MRS Spring Meeting 2019, Nice, France (Talk) - "In-Situ Observation of Σ3 {112} Twin Boundary Motion at Atomic Resolution in III-V Nanowires"
  • MMC 2019, Manchester, UK (Talk) - "In-Situ Observation of Σ3 {112} Twin Boundary Motion at Atomic Resolution in III-V Nanowires"
  • MMC 2021, Online (Flash talk + Poster) - "Observing Changes in Polar Domain Structures in Ferroelectric Oxide Thin Films Using Atomic Resolution In-Situ Electron Microscopy"

James Gott

Department of Physics
University of Warwick
Coventry
CV4 7AL

Office: MAS1.06

Email: J dot Gott at warwick dot ac dot uk

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