KMap
I am a graduate of ETH Zurich in Switzerland (1997) and pursued my DPhil as a Greendale Senior Scholar at Merton College at the University of Oxford (UK) from 1998 - 2000. From 2001-2004 I was a Swiss NSF PostDoc at JILA in Boulder Colorado. Since 2004 I am faculty at The University of Arizona. I really enjoy backpacking, road and mountain biking, long distance running with the lab dog and any and all intellectual endeavours.
Research Opportunities
  • Undergraduate researcher

    Grant: Collaborative Research: Tailoring Electron and Spin Transport in Single Molecule Junctions

    Learn how to make and control low-energy use electronic devices from single molecules...
Courses
  • PC
    Physical Chemistry

  • CPC
    Chemical Physics in the Condensed Phase

  • MMC
    Mathematical Methods for Chemists

  • MPC
    Mathematical Physics for Chemistry

  • QC
    Quantum Chemistry

  • IQC
    Introduction to Quantum Chemistry

Student Thesis/Dissertation
  • Cleaning and Passivation of Germanium and Silicon Germanium Surfaces

    2022

    doctoral
  • Quantum States of Confined Atomic and Molecular Systems in a Basis of Explicitly Correlated Gaussians

    2022

    doctoral
  • Structure-Function Relationships and Advanced Data Analysis in Single Molecule Quantum Transport

    2021

    doctoral
  • Dynamics and Energetics of Layered Materials and their Interfaces

    2019

    doctoral
  • Charge Transport through Single Molecules with Mechanically Controlled Break Junctions

    2019

    doctoral
  • Controlling Molecular Orientation with Applications to Organic Electronics

    2017

    masters
  • Nanoscale Insight and Control of Structural and Electronic Properties of Organic Semiconductor / Metal Interfaces

    2017

    doctoral
  • Electron Dynamics with Core Level Spectroscopy in MgₓZn₁₋ₓO and SnS₂. Design of a Low Energy Electron Diffraction Instrument

    2016

    masters
  • Measuring and Controlling Energy Level Alignment at Hybrid Organic/Inorganic Semiconductor Interfaces

    2015

    doctoral
  • Electronic Structure and Dynamics at Organic Semiconductor / Inorganic Semiconductor Interfaces

    2015

    doctoral
  • Design of a Mechanically Controllable Break Junction to Measure Quantum Conductance of Gold

    2014

    masters
  • From Growth to Electronic Structure of Dipolar Organic Semiconductors on Coinage Metal Surfaces

    2014

    doctoral
Grants
  • Funding agency logo
    Collaborative Research: Tailoring Electron and Spin Transport in Single Molecule Junctions

    Principal Investigator (PI)

    2023

    $165.4K
    Active
    Opportunity
  • Funding agency logo
    Time Reversal Symmetry Breaking in Quantum Materials Without Magnetism

    Principal Investigator (PI)

    2021

    $528.8K
    Active
  • Funding agency logo
    Understanding Electronic and Spin Structure at Organic / Metal Interfaces: Surfaces and Symmetry

    Principal Investigator (PI)

    2020

    $500.5K
    Active
  • Funding agency logo
    MRI: Development of Multiuser Instrument for Attosecond X-Ray Probing of Correlated Quantum Dynamics

    Co-Investigator (COI)

    2019

    $873.6K
    Active
  • Funding agency logo
    EAGER: Enabling Quantum Leap: Towards Room Temperature Quantum Logic Using Moire Heterostructure Single Quantum Emitters Coupled to Plasmonic Waveguides

    Co-Investigator (COI)

    2018

    $355.0K
  • Funding agency logo
    EAGER: Enabling Quantum Leap: Towards Room Temperature Quantum Logic Using Moire Heterostructure Single Quantum Emitters Coupled to Plasmonic Waveguides

    Co-Investigator (COI)

    2018

    $55.0K
  • Funding agency logo
    MRI: Acquisition of a Nanofabrication and Materials Research Etching System

    Co-Investigator (COI)

    2017

    $770.6K
  • Funding agency logo
    Electronic Structure in Single Molecule Transport

    Principal Investigator (PI)

    2017

    $507.5K
  • Funding agency logo
    Controlling Valley Polarization in 2D Heterostructures

    Co-Investigator (COI)

    2017

    $424.0K
  • Funding agency logo
    Photoelectron Spectroscopy for Sensitization in Solid State Lighting

    Principal Investigator (PI)

    2017

    $30.8K
News
  • UA Researchers Observe Electrons Zipping Around in Crystals

    2018

  • New UA Grad Selected to Speak at Beckman Symposium

    2016

  • Observing Electrons in Real-Time Could Lead to Faster Computing

    2013

  • Service and Scholarship Legacy of Achievement Medal Awardees

    2010

Publications (107)
Recent
  • Low Temperature Photoluminescence of SbPS4

    2023

  • Revealing Hidden Spin Polarization in Centrosymmetric van der Waals Materials on Ultrafast Timescales

    2023

  • Beyond Simple Structure–Function Relationships: The Interplay of Geometry, Electronic Structure, and Molecule/Electrode Coupling in Single-Molecule Junctions

    2022

  • Effect of geometric isomerism on single molecule conductance in a gold mechanically-controlled break junction

    2022

  • Oligophenylene vinylene derivatives: Synthesis and applications in a gold mechanically-controlled break junction

    2022

  • Beyond Simple Structure-Function Relationships: Interplay Between Cis/Trans Isomerization and Geometrically Constrained Metal/Molecule Coupling Efficiency in Single-Molecule …

    2022

  • HATCN on Ag 111) a Molecular Kondo Switch with Intrinsic Magnetic Bistability

    2022

  • Localized interlayer excitons in MoSe2–WSe2 heterostructures without a moiré potential

    2022

  • Enhanced Raman scattering from exciton coupling in 2D TMD-molecular heterostructures

    2021

  • Twist-Angle Dependent Interlayer Exciton Emission in MoSe2-WSe2 Heterostructures

    2021

  • Grid-Based Correlation Analysis to Identify Rare Quantum Transport Behaviors

    2021

  • Phenalenyls as tunable excellent molecular conductors and switchable spin filters

    2021

  • Correlated energy-level alignment effects determine substituent-tuned single-molecule conductance

    2021

  • H2Pc and pentacene on Cu 110)2× 1) O: A combined STM and nc-AFM study

    2020

  • Temperature dependent moiré trapping of interlayer excitons in MoSe2-WSe2 heterostructures

    2020

  • Ultrafast Carrier Dynamics in Two-Dimensional Electron Gas-like K-Doped MoS2

    2020

  • Anomalous bright narrow interlayer exciton photoluminescence in MoSe2-WSe2 heterostructures

    2020

  • Coupled 2D Semiconductor–Molecular Excitons with Enhanced Raman Scattering

    2020

  • Raman enhancement of PTCDA on monolayer WSe2

    2020

  • Single Molecule Quantum Transport in the Presence of Built-in Electric Fields-a Design Principle?

    2020

  • Unsupervised Segmentation-Based Machine Learning as an Advanced Analysis Tool for Single Molecule Break Junction Data vol 124, pg 18302, 2020)

    2020

  • Unsupervised segmentation-based machine learning as an advanced analysis tool for single molecule break junction data

    2020

  • The role of initial and final states in molecular spectroscopies

    2019

  • Attosecond Dynamics and Electronic Rehybridization in MoS2

    2019

  • Investigating Molecule-Electrode Binding in Single Molecule Junctions Using Linker GrouChemistry and Machine Learning

    2019

  • Structurally induced large changes of the energy level alignment in CuPc on

    2018

  • van der Waals interaction activated strong electronic coupling at the interface between chloro boron-subphthalocyanine and Cu 111)

    2018

  • Attosecond Carrier Dynamics and Electronic Structure Measurements in Quasi-2D Layered Materials

    2018

  • Electronic Structure and Spin Texture at Organic Semiconductor Interfaces

    2018

  • Attosecond Carrier Dynamics in Layered and Quasi-2D Semiconductors

    2018

  • Towards Understanding Energy Level Alignment in Single Molecule Charge Transport with Break Junctions

    2018

  • Chemical Functionalization and Charge Carrier Delocalization at a Hybrid Organic/Inorganic Semiconductor Interface

    2018

  • Configuration-specific electronic structure of strongly interacting interfaces: TiOPc on Cu 110)

    2017

  • Uncovering hierarchical data structure in single molecule transport

    2017

  • Attosecond Carrier Dynamics in Quasi-2D SnS2

    2017

  • Ensemble control of Kondo screening in molecular adsorbates

    2017

  • Anisotropic attosecond charge carrier dynamics and layer decoupling in quasi-2D layered SnS2

    2017

  • Fast sensitive amplifier for two-probe conductance measurements in single molecule break junctions

    2017

  • Stacking the Deck: Leveraging Surface Interactions to Tune Interfacial Electronic Structure

    2017

  • Hybridization‐Induced Carrier Localization at the C60/ZnO Interface

    2016

  • Valence and conduction band structure of the quasi-two-dimensional semiconductor Sn S 2

    2016

  • Sticking with the pointy end? Molecular configuration of chloro boron-subphthalocyanine on Cu 111)

    2016

  • Spectroscopy and Control of Near-Surface Defects in Conductive Thin Film ZnO

    2016

  • Novel Application of Cluster Analysis to Transport Data in Single Molecule Break Junctions

    2016

  • Disrupted Attosecond Charge Carrier Delocalization at a Hybrid Organic/Inorganic Semiconductor Interface

    2015

  • Surface-mediated dechlorination of Subphthalocyanine on Copper 111)

    2015

  • Surface-Mediated Self-Assembly Controlled by Interfacial Charge-Transfer

    2015

  • Controlling the Spin Texture of Topological Insulators by Rational Design of Organic Molecules

    2015

  • The importance of gastates for energy level alignment at hybrid interfaces

    2015

  • Integer Charge Transfer and Hybridization at an Organic Semiconductor Conductive Oxide Interface

    2015

  • Strong Interaction between Subphthalocyanines and Copper 111) A computational study

    2015

  • Hybridization-Induced Carrier Localization at the C60 ZnO Interface

    2015

  • Selective Cooperative Self-Assembly between an Organic Semiconductor and Native Adatoms on Cu(110)

    2015

  • Workfunction tuning of graphene with organic molecules

    2014

  • Persistent non-equilibrium interface dipoles at quasi-2D organic/inorganic semiconductor interfaces: the effect of gastates

    2014

  • Subphthalocyanines on Cu 111) Example for strong metal-molecule interactions

    2014

  • Defect‐Driven Interfacial Electronic Structures at an Organic/Metal‐Oxide Semiconductor Heterojunction

    2014

  • Understanding the adsorption of ClB-SubPc on Cu 111) as a prototypical example for strong metal-molecule interactions

    2014

  • Unified photoemission spectroscopic picture of defect-driven charge carrier physics at an organic semiconductor/metal oxide interface

    2014

  • GaStates at the Organic Semiconductor/Oxide Interface: Control of Energy Level Alignment

    2014

  • Tin Disulfide An Emerging Layered Metal Dichalcogenide Semiconductor: Materials Properties and Device Characteristics

    2014

  • Controlling Surface-Mediated Interactions at the Organic Semiconductor/Metal Interface

    2014

  • Ultrafast Charge-Transfer at an Organic Semiconductor/Oxide Interface

    2014

  • Tailoring Electron‐Transfer Barriers for Zinc Oxide/C60 Fullerene Interfaces

    2014

  • Interplay of local and global interfacial electronic structure of a strongly coupled dipolar organic semiconductor

    2014

  • Spin-dependent trapping of electrons at spinterfaces

    2013

  • Electronic structure and dynamics of quasi-2D states of vanadyl naphthalocyanine on Au(111)†

    2013

  • The Importance of Interfaces in Excitonic Solar Cells: Towards Control from First-Principles

    2013

  • Understanding interfacial electronic structure and charge transfer: An electrostatic perspective

    2012

  • Zinc oxide as a model transparent conducting oxide: a theoretical and experimental study of the impact of hydroxylation, vacancies, interstitials, and extrinsic doping on the …

    2012

  • Magnetic self-assembly of gold nanoparticle chains using dipolar core–shell colloids

    2011

  • Near-and Far-Field Effects on Excited States at Organic Semiconductor and Metal Interfaces

    2011

  • Kinetic studies of the photogeneration of silver nanoparticles

    2011

  • Interfacial electronic structure of the dipolar vanadyl naphthalocyanine on Au(111) Push-Back vs dipolar effects

    2011

  • Resonance and localization effects at a dipolar organic semiconductor interface

    2011

  • Influence of electrostatic fields on molecular electronic structure: Insights for interfacial charge transfer

    2010

  • A. Armstrong, NR; Sahoo, R. Srivastava, DN; Pyun

    2010

  • Experimental determination of the excited-state polarizability and dipole moment in a thin organic semiconductor film

    2010

  • Interfacial electronic structure of vanadyl naphthalocyanine on highly ordered pyrolytic graphite

    2010

  • Near-and far-field effects on molecular energy level alignment at an organic/electrode interface

    2010

  • Image states at the interface with a dipolar organic semiconductor

    2010

  • Synthesis and Colloidal Polymerization of Ferromagnetic Au−Co Nanoparticles into Au−Co3O4 Nanowires

    2010

  • Interfacial structure and dynamics at the electrode/organic interface

    2009

  • Proceedings of SPIE The International Society for Optical Engineering: Introduction

    2009

  • Confocal single molecule fluorescence spectroscopy in ultrahigh vacuum

    2009

  • Interfacial charge transfer at the single molecule level: Insights for dye-sensitized solar cells

    2009

  • Physical Chemistry of Interfaces and Nanomaterials VIII

    2009

  • Single molecule power-law behavior on a crystalline surface

    2009

  • Physical Chemistry of Interfaces and Nanomaterials VII

    2008

  • Toward microscale electronic structure in polymer Nanoparticle composites for solar energy conversion

    2008

  • Single molecule interfacial charge transfer dynamics in a dye-sensitized solar cell model

    2008

  • Local interfacial electronic structure of thin pentacene films on Si 111)

    2008

  • Interfacial structure and dynamics in organic photovoltaics: From solar cells to single molecules

    2007

  • Interfacial structure and dynamics in molecular solar cells

    2007

  • Physical Chemistry of Interfaces and Nanomaterials VI

    2007

  • Imaging nanostructures with scanning photoionization microscopy

    2006

  • Confocal fluorescencehotoionization microscopy studies of nanostructures.

    2005

  • Diffraction-limited photogeneration and characterization of silver nanoparticles

    2004

  • Changing pulse-shape basis for molecular learning control

    2004

  • Making and Measuring vibrational Wave Packets in Small Molecules Through Non-Resonant Impulsive Stimulated Raman Scattering

    2002

  • Spatial discrimination of Rydberg tagged molecular photofragments in an inhomogeneous electric field

    2001

  • High resolution photoionisation spectroscopy of vibrationally excited Ar· NO

    2001

  • Vibrational spectra and intramolecular vibrational redistribution in highly excited deuterobromochlorofluoromethane CDBrClF: Experiment and theory

    2000

  • Gas Phase Dynamics and Structure: Spectroscopy, Molecular Interactions, Scattering, and Photochemistry-Vibrational spectra and intramolecular vibrational redistribution in …

    2000

  • Gas Phase Dynamics and Structure: Spectroscopy, Molecular Interactions, Scattering, and Photochemistry-Rapidly fluctuating anisotropy parameter in the near-threshold …

    2000

  • Rapidly fluctuating anisotropy parameter in the near-threshold photodissociation of NO sub 2 sub

    2000

  • Development of a zero kinetic energy photodissociation spectrometer.

    1999

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