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Jacob Davis Gayles Jacob Davis Gayles Graduate Research Assistant CONTACT Johannes Gutenberg-Universität Mainz Work: +49 6131 39 27424 INFORMATION INSPIRE group Mobile: +49 173 622 74 14 Staudingerweg 7 E-mail: [email protected] Mainz, DE 55128 WWW: INSPIRE/jacob-gayles PhD Candidate Texas A&M University Department of Physics & Astronomy College Station, TX 77843-4242 RESEARCH Spin-Orbit Effects, First Principle Calculations, Spin-Transport, Non-Trivial Magnetism, INTERESTS Hall Effects, Berry Phase Physics, Skyrmions, Magnetic Exchange Interactions, Weyl Semimetals, Transitions in Magnetic Systems, Kubo Formalism, Boltzmann Tranport, Non-equilibrium Green Functions, Tight-Binding models ACADEMIC Graduate Research Assistant, Johannes Gutenberg Universität Mainz Jan 2015 to present APPOINTMENTS INSPIRE GROUP • Supervisor: Jairo Sinova − Spintronics − Spin orbit torques using Scattering Approach − Anomalous and Topological Hall effect in non-trivial magnetic systems − First Principle calculations of the Dzyaloshinskii-Moriya Interaction − First Principle calculations of B20 compounds, Half-Heuslers, Graphene, and Stanene Graduate Research Assistant, Forschungszentrum Jülich Summer 2013 Prof. Mokoursov Topoligical Group − Helicity and size dependence of skyrmions in B20 compounds Graduate Research Assistant, Institute of Physics, Academy of Sciences Czech Republic Summer 2012 Prof. Tomas Jungwirth − Anomalous Hall effect in 2D multiband systems with strong disorder Graduate Student Researcher, Texas A&M University August 2011 to present Department of Physics & Astronomy • Supervisor: Jairo Sinova • Supervisor: Artem Abanov Undergraduate Student Researcher, California State University Northridge January 2007 to August 2011 Department of Physics & Astronomy • National Science Foundation PREM Center • W.M. Keck Computational Materials Theory Center • Supervisor (PI): Professor Nicholas Kioussis • co-Supervisor (co-PI): Professor Donna Sheng − Transferable Tight-Binding parameters for CdTe (2011) − Transport Properties of DNA Base Pairs-Prof. Nick Kioussis (2009-2011) − Fe/BaTiO3/Fe Tunnel Junctions-Prof. Nick Kioussis (2009) REU, Princeton Center for Complex Materials Summer 2007, 2008, 2009 − Fe/BaTiO3/Fe Tunnel Junctions -Prof. Emily Carter & Prof. Nick Kioussis (2009) − Nonlinear Optics in Nonlocal Material-Prof. Jason Fleischer (2008) − Polymer Electrolyte Membrane Fuel Cell Optimization-Prof. Jay Benziger (2007) 1 of 6 EDUCATION Texas A&M University, College Station, TX Ph.D., Department of Physics & Astronomy, expected: 2016 • Thesis Topic: Spin-Orbit Effects in Magnetic Systems from an ab-initio prespective • Advisor: Professor Jairo Sinova, Professor Artem Abanov • Area of Study: Spintronics California State University Northridge, Northridge, CA B.Sc. Department of Physics & Astronomy, May 2011 • Advisor: Professor Nicholas Kioussis • Area of Study: Solid State Physics JOURNAL [1] C. Ciccarelli, L. Anderson, A. J. Ferguson, C. Gould, J. Gayles, J. Zelezny, L. Smejkal, Y. PUBLICATIONS Zhe, J. Sinova, F. Freimuth, and T. Jungwirth.Room-temperature spin-orbit torque in NiMnSb. Nature Physics (2016). doi:doi:10.1038/nphys3772 [2] Charles S. Spencer, Nicholas A. Porter, Rowan C. Temple, Christian J. Kinane, Timothy R. Charlton, Sean Langridge, and Christopher H. Marrows, Jacob Gayles, Jairo Sinova, Frank Freimuth, Yuriy Mokrousov, Stefan Blügel. Divergence of the magnetic helical period in Fe1−xCoxGe epilayers. In preparation. [3] J. Gayles, F. Freimuth, T. Schena, G. Lani, P. Mavropoulos, R. A. Duine, S. Blügel, J. Sinova, and Y. Mokrousov. Dzyaloshinskii–Moriya Interaction and Hall Effects in the Skyrmion Phase of Mn1−xFexGe. Phys. Rev. Lett. 115, 036602. doi:10.1103/PhysRevLett.115.036602 [4] Luis A Agapito, Jacob Gayles, Christian Wolowiec and Nicholas Kioussis. Aviram– Ratner rectifying mechanism for DNA base-pair sequencing through graphene nanogaps. Nanotechnology, 23 (13), 135202 (2012). doi:10.1088/0957-4484/23/13/135202 [5] Jin Li , Jacob Gayles, Nicholas Kioussis, Z. Zhang, C. Grein, F. Aqariden. Ab initio studies of the unreconstructed polar CdTe (111) surface. J. Electron. Mater. 41, 2745– 2753 (2012). doi:10.1007/s11664-012-1924-x [6] Jin Li, A. Ciani, J. Gayles, D. A. Papaconstantopoulos, Nicholas Kioussis, C. Grein, and F. Aqariden. Non-orthogonal tight-binding model for tellurium and selenium. Philo- sophical Magazine 93 (23), 3216-3230 (2013). doi:10.1080/14786435.2013.801569 CONFERENCE [1] PhD SpinCaT Workshop-New Perspectives for Spin-Caloritronics, August 18th-19th 2016 ORGANIZED CONFERENCE [1] Helicity and size dependence of Skyrmions in Mn1−xFexGe mediated by the Dzyaloshinskii- TALKS Moriya interaction. In: American Physical Society March Meeting, Denver, CO, March, 2014. [2] Inelastic process at finite temperature in 2D multi-band systems. In: American Physical Society March Meeting, Baltimore, MD, March, 2013. [3] Anomalous Hall effect in the Presence of Strong Spin-orbit Coupling and Non-trivial Mag- netization. In: American Physical Society March Meeting, Boston, MA, March, 2012. [4] Methods for Calculating Transport Properties of DNA Base Pairs Coupled to Graphene Nano-Ribbons. In: Conference for African American Researchers in the Mathematical Sciences 16, Baltimore, MD, June, 2010. 2 of 6 TALKS [1] Calculating Transport Properties of DNA Base Pairs Coupled to Graphene Nano-Ribbons In: NSF Reverse Site Vist, Washington D.C, April, 2011. [2] Methods for Calculating Transport Properties of DNA Base Pairs Coupled to Graphene Nano-Ribbons In: First Annual McNair Symposium at CSU Northridge, Northridge, CA, 2011. [3] Electric Field Control of Magnetism in Fe/BaTiO3/Fe Tunnel Junctions In: 13th Annual Student Research & Creative Works Symposium, Northridge, CA, 2009. [4] Polymer Electrolyte Membrane Fuel Cell Optimization In: Sigma Xi Student Research Symposium,Northridge, CA, 2009. [5] Fe/BaTiO3/Fe Tunnel Junctions In: NSF Site Visit, Northridge, CA, April, 2009. [6] Polymer Electrolyte Membrane Fuel Cell Optimization In: 12th Annual Student Research & Creative Works Symposium, Northridge, CA, 2007. CONFERENCE International Workshop : Spintronics with Antiferromagnets POSTERS [1] Spin-Orbit effects in Exotic 2-D Anti-Ferromagnetic Materials with Non-Collinear Spin. In: International Workshop : Spintronics with Antiferromagnets, Tohoku, Japan, Novem- ber, 2015. [2] Spin-Orbit Torques in Half-Heuslers. In: Ψ-K 2015 Conference, San Sebastian, Spain, September, 2015. [3] Transferable Tight-Binding parameters for CdTe. In: DTRA Basic Research Technical Review, Springfield, VA, July, 2011. [4] Transferable Tight-Binding parameters for CdTe. In: Conference for African American Researchers in the Mathematical Sciences 17, Los Angeles, CA, June, 2011. [5] Methods for Calculating Transport Properties of DNA Base Pairs Coupled to Graphene Nano-Ribbons. In: PREM+ MRSEC PIs Joint Meeting, Humacao, PR, March, 2011. [6] A DFT look at transport properties of Graphene nano-ribbons coupled to DNA Base pairs. In: American Physical Society March Meeting, Portland, OR, March, 2010. INVITED TALKS [1] Gayles, Jacob. Ab-initio calculations of the Dzyaloshinskii-Moriya interaction and trans- port in Exotic Magnetic Systems, Max Plank Institute For Chemical Physics of Solids, Dresden, May 20, 2015 [2] Gayles, Jacob. Helicity and size dependence of skyrmions in Mn1−xFexGe mediated by the Dzyaloshinskii-Moriya interaction, California State University Northridge, April 24, 2014. [3] Gayles, Jacob. Helicity and size dependence of skyrmions in Mn1−xFexGe mediated by the Dzyaloshinskii-Moriya interaction, Forschungszentrum Jülich, August 21, 2013. ACADEMIC Spin Phenomena Interdisciplinary Center at JGU SERVICE 2014-present − Organization and Planning − Camera operations − Website management Discover Enjoy and Explore Physics and Engineering at TAMU Graduate Student Mentor. 2012, 2013, 2014. 3 of 6 − Organization and Planning − Developed physics demos for classrooms − Mentor 4-6 undergraduate student in developing physics demos Texas A&M Physics Festival at TAMU Volunteer. 2012, 2013, 2014. − Organization and Planning − Developed physics demos for classrooms Texas A&M Physics Show at TAMU Lead 2013-2014. − Weekly demonstration of physics demos to generate public interest in physics − Organization and Planning − Presented physics demos for K–12 students Condensed Matter Journal Club at TAMU 5 hrs/week. 2009, 2010. − Present and discuss recent literature − Organize and lead meetings Physics & Astronomy Department Tutor at CSU Northridge 5 hrs/week. 2009, 2010. − Assist undergraduate physics and non-physics students in physics, math and chemistry Mathnaisium Northridge & Woodland Hills, CA 2006,2007 − Tutor K-12 students in math − Train and tutor students in math for SAT − Oversee large groups of pre-college students STUDENT Krishna Choudary 2009 MENTORING High School Student Intern at CSU Northridge, Case study of the Lennard Jones Potential Primary advisor: Prof. Nicholas Kioussis. Now: Graduate Student in Physics at UCLA. TEACHING Texas A&M University, College Station, TX Spring 2013 EXPERIENCE Supervisor: Dr. Tatiana Erukhimova & Prof. Jairo Sinova Student Assistant • PHYS 208: Electricity and Magnetism • Undergraduate course for engineers and science majors • Main instructor: Dr. Tatiana Erukhimova • Textbook: “Don’t Panic: Volume II”, by William H. Bassichis, 5th Edition PROFESSIONAL • Sigma Pi Sigma Honor Society MEMBERSHIPS • American Physical Society • Society of Physics Students WORKSHOPS • Spin Orbit Coupling and Spin Mechanics, Mainz, DE,
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