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David Vaknin

Scientist II
Address
A500 Zaffarano Hall
Iowa State University
Ames, IA 50011
Phone 515-294-6023
Fax 515) 294-0689
Email vaknin@ameslab.gov

Research Interests

  • Structure and dynamics in low dimensional magnetic systems
  • Specific and non-specific phenomena at bio-membranes
  • Developments of surface sensitive x-ray methods to investigate thin organic films
  • Soft condensed matter physics
  • Graphite intercalation compounds
  • Neutron and x-ray scattering techniques, ESR, and transport properties

        Project Affiliations:
        Bioinspired Materials

        Group Website:
        Neutron Scattering Group
        
        

(Chronologically most recent on top)Education

  • Ph.D. Physics, Hebrew University of Jerusalem, Israel, 1987
  • M.Sc. Physics, Hebrew University of Jerusalem, Israel, 1981
  • B.Sc. Physics and Mathematics, Hebrew University of Jerusalem, Israel, 1978

(Chronologically most recent on top)Professional Appointments

  • 2004 - present Senior Physicist, Ames Laboratory, Iowa State University
  • 1995 - 2004 Physicist, Ames Laboratory, Iowa State University
  • 1993 Visiting Scientist Physics, Risø National Lab, Denmark
  • 1992 Visiting Scientist Physics, Risø National Lab, Denmark
  • 1991 - 1995 Associate Physicist, Ames Laboratory, Iowa State University
  • 1990 - 1991 Postdoctoral Fellow, Risø National Laboratory, Denmark
  • 1987 - 1989 Postdoctoral Fellow, University of Pennsylvania & Exxon Laboratories

(Chronologically most recent on top)Publications with the Ames Laboratory

2011
Wang W J; Park R Y; Travesset A; Vaknin D . 2011. Ion-Specific Induced Charges at Aqueous Soft Interfaces. Physical Review Letters. 106:056102. abstract
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2010
Li H F; Tian W; Yan J Q; Zarestky J L; McCallum R W; Lograsso T A; Vaknin D . 2010. Phase transitions and iron-ordered moment form factor in LaFeAsO. Physical Review B. 82:064409. abstract
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Tian W; Li J Y; Li H F; Lynn J W; Zarestky J L; Vaknin D; Iop . 2010. Neutron Scattering Studies of LiCoPO4 & LiMnPO4. International Conference on Neutron Scattering 2009. 251:. abstract
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Vaknin D; Garlea V O; Demmel F; Mamontov E; Nojiri H; Martin C; Chiorescu I; Qiu Y; Kogerler P; Fielden J; Engelhardt L; Rainey C; Luban M . 2010. Level crossings and zero-field splitting in the {Cr-8}-cubane spin cluster studied using inelastic neutron scattering and magnetization. Journal of Physics-Condensed Matter. 22:466001. abstract
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Li H F; Broholm C; Vaknin D; Fernandes R M; Abernathy D L; Stone M B; Pratt D K; Tian W; Qiu Y; Ni N; Diallo S O; Zarestky J L; Bud'ko S L; Canfield P C; McQueeney R J . 2010. Anisotropic and quasipropagating spin excitations in superconducting Ba(Fe0.926Co0.074)(2)As-2. Physical Review B. 82:140503. abstract
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Vaknin D; Bu W . 2010. Neutrally Charged Gas/Liquid Interface by a Catanionic Langmuir Monolayer. Journal of Physical Chemistry Letters. 1:1936-1940. abstract
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Diallo S O; Pratt D K; Fernandes R M; Tian W; Zarestky J L; Lumsden M; Perring T G; Broholm C L; Ni N; Bud'ko S L; Canfield P C; Li H F; Vaknin D; Kreyssig A; Goldman A I; McQueeney R J . 2010. Paramagnetic spin correlations in CaFe2As2 single crystals. Physical Review B. 81:214407. abstract
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Li H F; Su Y; Chatterji T; Nefedov A; Persson J; Meuffels P; Xiao Y; Vaknin D; Bruckel T . 2010. Soft X-ray resonant scattering study of single-crystal LaSr2Mn2O7. European Physical Journal B. 74:457-461. abstract
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Lee Y; Vaknin D; Li H F; Tian W; Zarestky J L; Ni N; Bud'ko S L; Canfield P C; McQueeney R J; Harmon B N . 2010. Magnetic form factor of iron in SrFe2As2. Physical Review B. 81:060406. abstract
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2009
Bu W; Flores K; Pleasants J; Vaknin D . 2009. Preferential Affinity of Calcium Ions to Charged Phosphatidic Acid Surface from a Mixed Calcium/Barium Solution: X-ray Reflectivity and Fluorescence Studies. Langmuir. 25:1068-1073. abstract
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