Positions

Research Areas research areas

Overview

  • Karsten Pohl completed his doctorate in surface physics with Prof. E. Ward Plummer, by studying the electronic and geometric surface structure of hydrogen adsorption on beryllium surfaces with a combination of photoelectron spectroscopies and low-energy electron diffraction. After working with Drs. Robert Hwang and Norman Bartelt at Sandia National Laboratories in California on strain effects in ultrathin film self-assembly on metal surfaces as a post-doctoral fellow, developing a novel scanning tunneling microscope in the process, he joined the Faculty of the University of New Hampshire in 2000, where he is a Professor in the Department of Physics & Astronomy and the Materials Science Program. His group explores molecular and stress relaxation driven self-assembly processes yielding novel nano-materials and the electronic properties of reduced dimensional systems, involving experimental tools such as scanning probe microscopy, photoelectron spectroscopy, and low-energy electron microscopy or LEEM, as well as extensive numerical modeling. Dr. Pohl is a founding member of the NSF-Center for High-rate Nanomanufacturing at UNH and has received an Early Career Award from the National Science Foundation in 2002. He was a Visiting Professor at the University of Genua, Italy in 2007.

    Prof. Pohl’s research group is studying the fundamental properties of low-dimensional materials; in particular the interplay between electronic, magnetic, and structural behavior of novel 2D materials at the atomic scale and their interaction with organic molecules. His expertise includes scanning probe microscopy and low-energy electron - spectroscopies, - diffraction, and - microscopy, as well as photoemission spectroscopy and the modeling of electron - surface interactions. These novel materials will allow to dramatically reduce power consumption, weight, and size, while enhance efficiency and durability of crucial electronic devices. They will find application in revolutionizing technologies in areas such as novel flexible sensing devices, high-frequency electronics, and photovoltaics.
  • Publications

    Academic Article

    Year Title
    2018 Phase transition and electronic structure evolution of MoTe2 induced by W substitutionPHYSICAL REVIEW B.  98:144114. 2018
    2018 Lateral Standing of the Pentacene Derivative 5,6,7-Trithiapentacene-13-one on Gold: A Combined STM, DFT, and NC-AFM StudyJournal of Physical Chemistry C.  122:11938-11944. 2018
    2017 Surface buckling of black phosphorus: Determination, origin, and influence on electronic structurePhys. Rev. Materials.  1:074003. 2017
    2017 Electronic Structure of the Metastable Epitaxial Rock-Salt SnSe {111} Topological Crystalline InsulatorPhysical Review X.  7:041020. 2017
    2017 Novel surface diffusion characteristics for a robust pentacene derivative on Au(111) surfacesChemical Physics Letters.  678:28-34. 2017
    2017 Surface structure of bulk 2H-MoS2(0001) and exfoliated suspended monolayer MoS2: A selected area low energy electron diffraction studySurface Science.  660:16-21. 2017
    2016 Hydrogenation and exfoliation of graphene using polyamine reagentsDiamond and Related Materials.  66:107-112. 2016
    2014 A Robust, High-Temperature Organic SemiconductorJournal of Physical Chemistry C.  118:26955-26963. 2014
    2013 Sharp organic interface of molecular C-60 chains and a pentacene derivative SAM on Au(788): A combined STM & DFT studySurface Science.  618:78-82. 2013
    2011 Highly ordered assembly of single-domain dichloropentacene over large areas on vicinal gold surfaces.ACS Nano.  5:1792-1797. 2011
    2011 Highly uniform step and terrace structures on SiC(0001) surfacesIBM Journal of Research and Development.  55:7:1-7:6. 2011
    2010 Spatially-resolved structure and electronic properties of graphene on polycrystalline Ni.ACS Nano.  4:7073-7077. 2010
    2010 Structure and oscillatory multilayer relaxation of the bismuth (100) surfaceNew Journal of Physics.  12:063016-063016. 2010
    2010 Acoustic surface plasmon on Cu(111)Europhysics Letters.  90:57006-57006. 2010
    2009 Palladium diffusion into bulk copper via the (100) surface.Journal of Physics Condensed Matter.  21:314016. 2009
    2009 Self-assembly of methanethiol on the reconstructed Au(111) surfacePhysical Review B - Condensed Matter and Materials Physics.  80:081401. 2009
    2009 Molecular self-assembly of functionalized fullerenes on a metal surface.Physical Review Letters.  102:056102. 2009
    2008 Band structure effects on the Be(0001) acoustic surface plasmon energy dispersionPhysica Status Solidi (A) Applied Research Physica Status Solidi (A) Applications and Materials Science.  205:1307-1311. 2008
    2007 Local structural and compositional determination via electron scattering: Heterogeneous Cu(001)-Pd surface alloyPhysical Review B - Condensed Matter and Materials Physics.  76:205414. 2007
    2007 An ultrahigh vacuum fast-scanning and variable temperature scanning tunneling microscope for large scale imaging.Review of Scientific Instruments.  78:103701. 2007
    2007 Low-energy acoustic plasmons at metal surfaces.Nature Nature: New biology.  448:57-59. 2007
    2007 Self-organized nanotemplating on misfit dislocation networks investigated by scanning tunneling microscopy.Microscopy Research and Technique.  70:547-553. 2007
    2006 Structural determination of the Bi(110) semimetal surface by LEED analysis and ab initio calculationsPhysical Review B - Condensed Matter and Materials Physics.  74:245406. 2006
    2006 Origins of nanoscale heterogeneity in ultrathin films.Physical Review Letters.  96:246103. 2006
    2005 Structure of the (111) surface of bismuth: LEED analysis and first-principles calculationsPhysical Review B - Condensed Matter and Materials Physics.  72:085410. 2005
    2004 Phase diagram of hydrogen on Be(0001) from reconstruction-induced surface core-level shiftsPhysical Review B - Condensed Matter and Materials Physics.  70:235424. 2004
    2004 Enhanced self-diffusion on Cu(111) by trace amounts of s: chemical-reaction-limited kinetics.Physical Review Letters.  93:166101. 2004
    2003 Multilayer thermal expansion of Be(0001) determined from surface core level shiftsEurophysics Letters.  64:364-370. 2003
    2001 Direct observation of misfit dislocation glide on surfaces.Physical Review Letters.  86:3819-3822. 2001
    2001 Determination of buried dislocation structures by scanning tunneling microscopyPhysical Review B - Condensed Matter and Materials Physics.  63:165431. 2001
    1999 A prelude to surface chemical reaction: Imaging the induction period of sulfur interaction with a strained Cu layerJournal of Physical Chemistry B Journal of Physical Chemistry B Materials.  103:10557-10561. 1999
    1999 Multiplication of threading dislocations in strained metal films under sulfur exposureSurface Science.  433:93-98. 1999
    1999 Thermal vibrations of a two-dimensional vacancy island crystal in a strained metal filmSurface Science.  433:506-511. 1999
    1999 Structure of the H-induced vacancy reconstruction of the (0001) surface of beryllium.Physical Review B - Condensed Matter and Materials Physics.  59:R5324-R5327. 1999
    1999 Identifying the forces responsible for self-organization of nanostructures at crystal surfacesNature Nature: New biology.  397:238-241. 1999
    1998 Physics of the Be(10(1)over-bar0) surface core level spectrumPhysical Review Letters.  81:3271-3274. 1998
    1998 Linking dislocation dynamics and chemical reactivity on strained metal filmsSurface Science.  415:L993-L999. 1998
    1998 Anomalously large thermal expansion at the (0001) surface of beryllium without observable interlayer anharmonicityPhysical Review Letters.  80:2853-2856. 1998
    1996 Structure of the Be(11(2)over-bar-0) surfaceSurface Science.  364:L617-L624. 1996
    1996 Geometric structure of Be(101-bar0).Physical Review B - Condensed Matter and Materials Physics.  53:13715-13719. 1996
    1993 MULTILAYER RELAXATION OF THE MG(0001) SURFACESurface Science.  297:L48-L54. 1993
    First-principles theory of low-energy electron diffraction and quantum interference in few-layer graphene
    Structural determination of a low-symmetry surface by low-energy electron diffraction and ab initio calculations: Bi(110)

    Conference Proceeding

    Year Title
    2003 Glide and climb of dislocations in ultra-thin metal filmsJournal of Metastable and Nanocrystalline Materials. 3421-3426. 2003
    2002 Stability of nanostructures at metal surfaces.ACS National Meeting Book of Abstracts. U385-U385. 2002
    2000 Dynamics of pattern formation in strained metal overlayers.ACS National Meeting Book of Abstracts. U346-U346. 2000

    Teaching Activities

  • General Physics II Recitation Taught course 2018
  • Honors/General Physics I Taught course 2018
  • Doctoral Research Taught course 2018
  • General Physics I Recitation Taught course 2018
  • Doctoral Research Taught course 2017
  • Honors/General Physics I Taught course 2017
  • Doctoral Research Taught course 2017
  • General Physics II Recitation Taught course 2017
  • Doctoral Research Taught course 2016
  • Honors/General Physics I Taught course 2016
  • Doctoral Research Taught course 2016
  • Honors/General Physics II Taught course 2016
  • Doctoral Research Taught course 2015
  • Condensed Matter Physics Taught course 2015
  • Doctoral Research Taught course 2015
  • General Physics II Recitation Taught course 2015
  • Advanced Solid State Physics Taught course 2014
  • Doctoral Research Taught course 2014
  • Statistical Physics Taught course 2014
  • Education And Training

    Full Name

  • Karsten Pohl