# March Meeting 2015 • March 2 - 6 • San Antonio, Texas

# Tutorials

### Registration Fees

- Meeting Attendees:
**$125 per tutorial** - Students:
**$65 per tutorial**

### Registration Information

- Register for tutorials when you register for the meeting.
- Register early! Space is limited and tutorials will fill up.

- Pre-registration required—No onsite registration (Deadline: January 31, 2014)

Tutorials are half-day workshops held on the Sunday before the opening of the March Meeting organized by March Meeting Program Chairs. There are four morning and four afternoon tutorials. See complete information about each tutorial, including content description and speakers, below.

Morning TutorialsTutorial #1 Tutorial #2 Tutorial #3 Tutorial #4 |
Afternoon TutorialsTutorial #5 Tutorial #6 Tutorial #7 Tutorial #8 |

### Tutorial #1: Density Functional Theory

**When?**

Sunday, March 2, 2014

8:30 a.m. — 12:30 p.m.

**Where?
**Convention Center

Room 201

**Who Should Attend?**

Graduate students, post-docs, and other scientists interested in learning about the essential elements of Density Functional Theory, both in its ground-state and time-dependent formulations. The tutorial talks will be very pedagogical, covering the fundamentals of the theory as well as applications, latest developments, and unsolved questions. This tutorial will be a good introduction for those who are planning to attend the symposium “Recent Advances in Density Functional Theory” at this APS meeting.

**Organizer**

Neepa Maitra, Hunter College and the Graduate Center of the City University of New York

**Instructors**

• Kieron Burke, University of California at Irvine

• John Perdew, Temple University

• Carsten Ullrich, University of Missouri-Columbia

• Adam Wasserman, Purdue University

Density Functional Theory (DFT) provides a practical route for calculating the electronic structure of matter at all levels of aggregation. Five decades after its inception, it is now routinely used in many fields of research, from materials engineering to drug design. Time-dependent Density Functional Theory (TDDFT) has extended the success of DFT to time-dependent phenomena and excitations. Most applications are carried out in the linear-response regime to describe molecular excitations, but the theory is applicable to a much broader class of problems, including strong-field phenomena, attosecond control of electron dynamics, nanoscale transport, and non-adiabatic dynamics of coupled electron-nuclear systems. The tutorial will provide an introduction to the basic formalism of DFT and TDDFT, an overview of state-of-the-art functionals and applications, and a discussion of the most pressing open questions.

**Topics**

- DFT: Basic theorems of ground-state DFT, with simple examples; exchange-correlation functionals and exact conditions such as scaling, self-interaction, and derivative discontinuities; exact exchange and beyond; the Jacob’s ladder of Density Functional approximations.

- TDDFT: Basic theorems of TDDFT, with simple examples; survey of time-dependent phenomena; memory dependence; linear response and excitation energies; optical processes in materials; multiple and charge-transfer excitations; current-TDDFT; nanoscale transport; strong-field processes; nonadiabatic electron-nuclear dynamics.

### Tutorial #2: Spintronics

**When?**

Sunday, March 2, 2014

8:30 a.m. — 12:30 p.m.

**Where?
**Convention Center

Room 203

**Who Should Attend?**

Graduate students, post-docs, university faculty, industrial researchers and program managers who are interested in a broad introduction to the current state of basic and applied research in spintronics. We particularly encourage participation of graduate students and post-docs and each talk will begin from a level appropriate for junior researchers.

**Organizer**

Dr. Mark Johnson, Naval Research Laboratory, Washington DC

**Instructors**

• Prof. Ian Appelbaum, University of Maryland

• Prof. Hanan Dery, University of Rochester, NY

• Prof. Lucian Prejbeanu, SPINTEC / CEA/CNRS Grenoble, France

• Prof. Andrew Kent, New York Univ., NY

Spintronics explores the transport issues associated with the coupling of the spin and charge degrees of freedom of conduction electrons and holes. It is one of the most dynamic fields in the areas of condensed matter and materials physics. Steady growth in the field has been driven by basic research that has near term impact on integrated device applications. High performance, low power nonvolatile magnetic random access memory (MRAM) is a commercial success that is poised to expand its role in digital signal processing technology. In the past few years, important basic research results in areas of semiconductor spintronics, spin orbit coupled systems, and spin torque transfer have been achieved.

The goal of this tutorial session is to provide an introduction to the basic concepts in spintronics and to introduce researchers from outside the field, or junior researchers within the field, to recent theoretical and experimental developments on topics that are experimentally highly active and have strong potential to impact future technologies.

**Topics**

- Spin transport in metals and semiconductors; experiments, modeling and simulation
- Spin injection / detection techniques
- Theory of spin relaxation in group IV semiconductors and 2D membranes
- Spin transfer torque physics; transition metals and MTJs
- Spin transfer torque and spin orbit coupled systems; Rashba and Spin Hall Effect
- MRAM advances, scalability, magnetoelectronic logic

### Tutorial #3: Photovoltaic Research Topics in a Changing World

**When?**

Sunday, March 2, 2014

8:30 a.m. — 12:30 p.m.

**Where?
**Convention Center

Room 205

**Who Should Attend?**

Graduate students, post-docs, university faculty and industrial researchers interested in the current state of photovoltaic research and the current challenges that go beyond finding “the next material.” We particularly encourage collaborative participation of researchers from industry and academia to discuss research topics of common interest.

**Organizer**

Sarah Kurtz, National Renewable Energy Lab

**Instructors**

• Sarah Kurtz, National Renewable Energy Lab

• Christiana Honsberg, Arizona State University

• Myles Steiner, National Renewable Energy Lab

• Steve Johnston, National Renewable Energy Lab

PV has arrived! What does that mean for PV researchers? Historically PV research has focused on finding new material systems to boost efficiency and/or reduce cost. However, there are a host of research topics that refine existing PV materials by perfecting material quality, and optimize device architecture and optical design.

This tutorial will start with an overview of the recent, dramatic changes in the industry and how these affect research directions. It will provide a technical understanding of what makes a good solar cell, and consider the merits of different approaches. However, reaching the theoretical limit on efficiency requires more than perfect materials, since performance will also depend upon the optical as well as electronic design. Finally, the ultimate goal is to produce practical commercial devices. Modern characterization tools can help to control the manufacturing process, to optimize the device design, and to diagnose what went wrong after deployment in the field.

**Topics**

- An overview of the industry and its current challenges.
- Nanotechnology and next generation solar cells.
- Optical design for higher efficiency, including photon recycling and radiative coupling.
- Characterization tools (e.g. electroluminescence, photoluminescence, and infrared imaging) and their use to improve performance.

### Tutorial #4: Graphene

**When?**

Sunday, March 2, 2014

8:30 a.m. — 12:30 p.m.

**Where?
**Convention Center

Room 207

**Who Should Attend?**

Graduate students, post-docs, university faculty and industrial researchers interested in a broad introduction to the current state of the field of Graphene. We particularly encourage participation of graduate students and post-docs and so each talk will begin from a level appropriate for junior researchers.

**Organizer**

Professor Valeri Kotov, University of Vermont

**Instructors**

• Professor Bruno Uchoa, University of Oklahoma

• Professor Eva Andrei, Rutgers University

• Professor Leonid Levitov, Massachusetts Institute of Technology

• Professor Yong Chen, Purdue University

Graphene, recognized by the 2010 Nobel Prize in Physics, has created a new field of research in condensed matter physics, leading to fundamentally new concepts as well as numerous potential applications. The unique band structure of graphene leads to unconventional electronic and structural characteristics that cannot be described by the traditional theory of metals and semiconductors.

This tutorial will provide an introduction to the basic concepts in graphene as well as an overview of recent theoretical and experimental developments in the field. In particular we will explore the role of electron-electron interactions in single layer and bi-layer graphene, covering phenomena that range from the concept of Dirac liquid that replaces the familiar Fermi liquid, to the Kondo effect, the RKKY interaction, and superconductivity in graphene. An overview of spectroscopic studies and transport phenomena will be presented. Furthermore, graphene can be used as a building block for a large number of different applications such as flexible and transparent electronics, radiation and photo detectors, etc., and we will explore recent advances in the field of graphene-based electronics and nanomaterials.

**Topics**

- Electronic Properties of Graphene, including the physics of Adatoms, Kondo effect, Magnetism and Superconductivity
- Spectroscopy and Magnetotransport in Graphene
- Correlated Electronic Phases in single and bi-layer Graphene
- Graphene-Based Nanomaterials

### Tutorial #5: Assessing density functional theory and Many body perturbation theory from ABINIT

**When?**

Sunday, March 2, 2014

1:30 p.m. — 5:30 p.m.

**Where?
**Convention Center

Room 201

**Who Should Attend?**

Graduate students, post-docs, university faculty and industrial researchers interested in learning the basis on how to perform calculations using ABINIT such as phonons, elastic constants, dielectric properties, etc using DFT and electronical and optical properties using many body perturbation theory. We will assume a fair knowledge of quantum mechanics and basis of density functional theory at the level of a junior researcher.

**Organizer**

Prof. Aldo Humberto Romero, Physics Dept., West Virginia University, USA

**Instructors**

•Xavier Gonze, Université Catholique de Louvain, Belgium

• Matthieu Verstraete, Université de Liège, Belgium

• Marc Torrent. CEA, France

• Fabien Bruneval, CEA, France

Electronic structure calculations by means of Density functional Theory and/or many body perturbation theory are performed nowadays regularly in material sciences. These methods are basically used to describe the structural, electronic and magnetic properties of insulators, metals and semiconductors at the ground state working with the same theoretical background. For such purpose, several computer codes have been developed using different basis sets, different levels of theory or different approximations. Some are focused in finite systems and other to periodic systems. The fact that many of these codes are freely available has increased the used in the physics community and even inexperienced users can have access to those codes. Therefore there is gap between the set up of the calculations and the actual interpretation of the results.

The goal of this tutorial is to give a grasp of such calculations when performed within the ABINIT code. An overview of density functional perturbation theory as well as many body perturbation theory will be presented and some of the possible observables that can be calculated will be discussed. Additionally, details on the performance of the code, the input variables and the details of the calculation will be given.

**Topics**

- Density Functional Perturbation Theory, to access, from a practical point of view, various vibrational, thermodynamical, dielectric properties and electric field responses.
- Projector augmented waves (PAW), to access atom-centered properties and introduction to different formalisms, including LDA+U and the effect of spin-orbit.
- Many-body perturbation theory, to access electronic and optical properties.

### Tutorial #6: Physics and the Brain Initiative

**When?**

Sunday, March 2, 2014

1:30 p.m. — 5:30 p.m.

**Where?
**Convention Center

Room 203

**Who Should Attend?**

Graduate students, postdoctoral researchers, faculty in physics, and industrial physicists interested in finding out how physicists can contribute to the fundamental science and technical innovation of the recently announced BRAIN initiative (Brain Research through Advancing Innovative Neurotechnologies).

**Organizer**

D.L. Cox, U.C. Davis; H. Levine, Rice University

**Instructors**

• Mayank R. Mehta, UCLA (Brain Activity maps)

• D. Chklovskii , Janelia Farm (Connectomics)

• S A Solla, Northwestern (Collective neural network response theory)

• D. Handwerker, NIMH (Functional Imaging)

One of the last frontiers for scientific knowledge is the seat of knowledge production itself, the human brain. With physical science derived tools such as functional magnetic resonance imaging (fMRI), a course-grained view of the operations of the brain has begun to emerge. However, in the words of NIH director Francis Collins, this is like a view from a plane at 20,000 feet. In parallel, the “connectomes” –static maps of neuronal contacts at the level of synaptic resolution – have emerged for simple organisms like the C. Elegans worm or for subunits in more complex beings (such as the vision system in Drosophilia). A complete dynamical picture of neuron activity maps in a zebrafish embryo has also been obtained.

What is missing in these scientific advances is a comprehensive dynamical map of whole brain function. This is in no small part because we lack the fundamental experimental and theoretical infrastructure needed to comprehend the information processing The great ambition of the BRAIN initiative is to spur the developments in quantitative understanding and observational tools to unlock the workings of the brain and help mitigate human suffering from such conditions as epilepsy, autism, Alzheimer’s, and Parkinson’s disease.

**The tutorial will provide attendees with a state of the art view of**

- Connectomics
- What we have learned from coarse grained probes such as functional MRI
- Neuron Activity Maps
- What kind of developments in conceptual and quantitative theory are needed to make the BRAIN initiative successful?
- What are big open questions, such as: how many neurons need to be sampled? What is the role of glial cells in brain function? What is the role of collective oscillations? How can we quantitatively link neuronal activity to behavioral manifestations?

### Tutorial #7: Topological Materials – Registration Closed

**THIS TUTORIAL IS FULL. REGISTRATION IS CLOSED.
**

**When?**

Sunday, March 2, 2014

1:30 p.m. — 5:30 p.m.

**Where?
**Convention Center

Room 205

**Who Should Attend?**

Graduate students, post-docs, and more senior researchers interested in an introduction to the fundamentals and applications of topological phases of matter. All talks will be given at a pedagogical level accessible to a broad audience, and we encourage participation from both theorists and experimentalists.

**Organizer**

Jason Alicea, California Institute of Technology, USA

**Instructors**

• Taylor Hughes, University of Illinois at Urbana-Champaign, USA

• Jason Alicea, California Institute of Technology, USA

• Bert Halperin, Harvard University, USA

• Chetan Nayak, Station Q and UC Santa Barbara, USA

The advent of materials that realize topological phases opened a fascinating new chapter in condensed matter physics. Such systems exhibit a number of striking physical properties that derive from subtle quantum entanglement. For instance, many topological systems support current-carrying boundary states that are protected from scattering; moreover, their interior can host novel emergent excitations whose charge and statistics differ markedly from those of the underlying electrons and ions. These characteristics—fascinating in their own right—endow topological phases with technological promise in areas ranging from low-power electronics to quantum computation.

The recent surge in the number of experimental platforms suitable for exploring topological phenomena has dramatically altered the landscape of the field. This tutorial will survey the current state of the art in several prominent areas, notably topological insulators, topological superconductors, and quantum Hall systems. Pedagogical talks will elucidate the remarkable fundamental physics present in each of these areas, their experimental signatures, and potential applications. The final talk of the session will provide an overview of one of the “holy grails” of the field—harnessing topological materials to synthesize a quantum computer intrinsically immune to decoherence.

**Topics**

- Topological insulators
- Topological superconductors and Majorana modes
- Quantum Hall physics
- Topological quantum computation

### Tutorial #8: MATLAB for Physics Education and Research

**When?**

Sunday, March 2, 2014

1:30 p.m. — 5:30 p.m.

**Where?
**Convention Center

Room 207

**Who Should Attend?**

Graduate students, post-docs, university faculty and industrial researchers interested in learning how to leverage MATLAB effectively in physics research and teaching. We encourage participation from current and former MATLAB users (current and older MATLAB releases), as well as attendees who haven’t used MATLAB and want a technical overview of its relevant capabilities.

**Organizer**

Jim Tung, MathWorks

**Instructors**

• Jerry Brusher, MathWorks

• Marie Lopez del Puerto, University of St. Thomas

• Rusty Boyd, University of Oklahoma

This tutorial will cover key MATLAB functionality relevant to physics education and research – including features introduced in the most recent MATLAB versions. For current users, the tutorial will include tips and tricks to help MATLAB users work more effectively, such as techniques for speeding up their MATLAB programs or working with larger datasets.

**Topics**

- Performing interactive simulations
- Solving problems numerically or analytically
- Extracting, analyze, and visualize experimental data
- Modeling and simulating phenomena to build intuition
- Expressing and simulating equations to test hypotheses
- Simulating analytical models to test predictions

- Acquiring data, including support for low-cost and open-source hardware
- Analyzing data
- Symbolic math capabilities
- Modeling physical systems using first-principles, domain-specific, and black-box modeling approaches
- Creating and sharing MATLAB apps to perform numerical and analytical analysis, including interactive parameter selection and quick visualization
- Tips and Tricks for the MATLAB user

- Talks(s) by physics educators and/or researchers who use MATLAB