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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 and have joined the project "Ferrotoroidic structures: polar flux-closure, vortices and skyrmions" led by Porf. Marin Alexe and Prof. Ana Sanchez.

Interests

My current work uses advanced electron microscopy techniques to study ferrotoroidic structures. By using TEM/STEM with computational techniques I measure and map polarisation domains of ferroelectric oxide thin films.

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"

James Gott

Department of Physics
University of Warwick
Coventry
CV4 7AL

Office: MAS1.06

Tel: +44 (0)24765 74395
Email: J dot Gott at warwick dot ac dot uk

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