Events Archive

Condensed Matter Seminar

Condensed Matter Seminar | Dan Shahar, Weizmann Inst. | "Hot superconductors and cold insulators” | PCTS Seminar Room 407

Special CM Seminar | Ruben Verresen, TUM & Max Planck |"The Topology and Quantum Criticality in 1+1D" | PCTS Seminar Room 407

Tue, Feb 20, 2018, 2:00 pm

Abstract:  Ground states of gapped Hamiltonians can form 'symmetry-protected topological phases', characterized by zero-energy edge modes. We explore the quantum critical points between such topological phases in one spatial dimension.

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Condensed Matter Seminar | Karol Gregor, Google DeepMind, London | "Machine Learning: Methods and recent successes." | PCTS, Seminar Room 407

Mon, Dec 11, 2017, 1:15 pm

Abstract:  Artificial Intelligence/Machine learning has seen large growth and a number of successes over the past few years. In this talk I will describe some of the core ideas and algorithms along with corresponding results. We will start by thinking about intelligence in general.

Speaker(s):

Condensed Matter Seminar | Arnab Banerjee,ORNL | "Excitations and emergent quantum phenomena in a Kitaev honeycomb compound" | PCTS Seminar Room 407

Condensed Matter VIDEO Seminar, Antoine Browaeys, Inst. Optique, "Many-body physics with arrays of individual Rydberg atoms" PCTS Seminar Room 407

Mon, Nov 20, 2017, 11:00 am

Abstract:  This talk will present our on-going effort to control the dipole-dipole interaction between cold Rydberg atoms in order to implement spin Hamiltonians that may be useful for quantum simulation of condensed matter problems.

Speaker(s):

Condensed Matter Seminar, Jeremy Levy, U. Pittsburgh, "Correlated Nanoelectronics" PCTS Seminar Room 407

Mon, Nov 13, 2017, 1:15 pm

Abstract:   The study of strongly correlated electronic systems and the development of quantum transport in nanoelectronic devices have followed distinct, mostly non-overlapping paths.  Electronic correlations of complex materials lead to emergent properties such as superconductivity, magnetism, and Mott insulator phases.

Speaker(s):

Condensed Matter Seminar | Cory Dean, Columbia, "Correlated states in bilayer graphene in the quantum Hall regime" | PCTS Seminar Room 407

Special CM Seminar,Sebastian Will, Columbia, "Talk title to be announced" PCTS Seminar Room, 407

Wed, Oct 25, 2017, 1:30 pm

Abstract:  to be announced.

Speaker(s):

Special CM Seminar | Robert-Jan Slager | Max Planck | "Crystalline symmetries and topological band theory. ." | Jadwin 303

Condensed Matter VIDEO Seminar, Jay Narayan, NCSU, "Title to be announced" PCTS Seminar Room 407

Mon, Oct 23, 2017, 1:15 pm

Abstract:  to be announced.

Speaker(s):

Condensed Matter Seminar, Chong Wang, Harvard, "A Web of Dualities in Condensed Matter Physics: from Quantum Hall Effect to Exotic Quantum Criticality," PCTS Seminar Room 407

Mon, Oct 16, 2017, 1:15 pm

Abstract:  Two seemingly different quantum field theories may secretly describe the same underlying physics — a phenomenon known as “duality". I will review some recent developments in field theory dualities in (2+1) dimensions and some of their applications in condensed matter physics, in particular in quantum Hall effect and quantum phase...

Condensed Matter Seminar, Alessandra Lanzara, Berkeley, "From Mott Physics to Topology " PCTS Seminar Room 407

Mon, Sep 25, 2017, 1:15 pm

Two types of interactions commonly drive new emergent phenomena beyond textbook band theory in solids: electron correlation and spin orbit coupling.

Condensed Matter Seminar, Sean Hartnoll, "Bounds on transport", PCTS Seminar Room 407

Mon, Sep 18, 2017, 1:00 pm

Abstract:  There is a long history to the idea that transport may be subject to fundamental constraints. I will argue that variants of these ideas offer promising ways to think about non-quasiparticle transport.

Speaker(s):

Special CM Seminar, Malin Nilsson, Lund U. "Charge and spin transport in parallel quantum dots in nanowires"

Fri, Aug 11, 2017, 1:30 pm to 3:00 pm

We use quantum dots (QDs) formed by crystal-phase tuning during epitaxial growth of InAs nanowires as a starting point to realize and electrically  characterize two different types of parallel-coupled quantum dots; electron-hole QDs and electron-electron QDs.

Special CM Seminar, Timon Hilker, Max Planck, "Spin resolved microscopy of doped Hubbard chains"

Thu, Jun 22, 2017, 10:00 am

The doping of an antiferromagnet can lead to complex physics related to high temperature superconductivity. In one dimension, however, the competition between spin and density sectors is largely absent due to the separation of the spin and density modes at low energy.

Special CM Seminar, Oren Ben Or, Hebrew University, "Molecular Chiral-based spintronics devices"

Mon, Jun 19, 2017, 1:00 pm

As global data accumulation increases at an ever-growing rate, further miniaturization and the decrease of power consumption have the highest priority in the development of our information and communication technologies. Memory technologies available today offer a variety of methods; all have advantages but also suffer from various drawbacks....

Special Condensed Matter Seminar, Simon Trebst, U. of Cologne, "Spin liquids and (Majorana) metals"

Fri, Jun 2, 2017, 1:15 pm

Spin liquids are often dichotomous states, where an electronic Mott insulator harbors emergent itinerant degrees of freedom that form a metal.

Condensed Matter Seminar, Piers Coleman, Rutgers, "SmB6: Strange insulator at the brink of superconductivity?"

Mon, May 22, 2017, 1:15 pm

SmB6, an ultra-narrow gap insulator discovered more than 50 years ago, poses a paradox.  On the one hand, current theory and some experiments indicate that SmB6 is likely a topological insulator.

Special CM Seminar, Ahmed Omran, Harvard, "Quantum dynamics of strongly interacting atom arrays""

Wed, May 17, 2017, 1:30 pm

The realization and control of large-scale quantum systems is an exciting frontier of modern physical science. Using a novel cold atom platform, we trap single neutral atoms in an array of optical tweezers, and use real-time feedback to prepare defect-free chains of tens of atoms in one dimension with a high fidelity and repetition rate.

Condensed Matter Seminar, Sagar Vijay, MIT, "Fracton Topological Orders"

Mon, May 15, 2017, 1:15 pm

Fracton topological phases represent a new kind of three-dimensional topological order that is characterized by immobile, point-like topological excitations, and sub-extensive topological degeneracy.  Apart from providing an intriguing alternative to Bose or Fermi statistics in three dimensions, these phases are of interest as possibly robust...

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