News & Events

Colloquium: Rafael Fernandes

A hallmark of the phase diagrams of quantum materials is the existence of multiple electronic ordered states. In many cases, they cannot be simply described as independent competing phases, but instead display a complex intertwinement. In this talk, I will present a framework to describe intertwined phases in terms of a primary and a vestigial phase. While the former is characterized by a multi-component order parameter, the fluctuation-driven vestigial state is characterized by a composite order parameter formed by higher-order, symmetry-breaking combinations of the primary order parameter. Exotic electronic states with scalar and vector chiral order, spin-nematic order, Potts-nematic order, time-reversal symmetry-breaking order, and charge 4e superconductivity emerge from this simple underlying principle. I will present a rich variety of possible phase diagrams involving the primary and vestigial orders, and discuss possible realizations of these exotic composite orders in different quantum materials.

Colloquium: Claudia Scarlata

Claudia Scarlata, University of Minnesota will deliver the first colloquium on the topic of "Learning about the early Universe from Nearby galaxies."

School of Physics and Astronomy Colloquium

Speaker:  Rudolf M. Tromp, IBM T.J. Watson 
Subject: Low Energy Electron Microscopy

In Low Energy Electron Microscopy (LEEM) and Photo Electron Emission Microscopy (PEEM) the sample forms the cathode in a strongly decelerating/accelerating immersion objective lens. This enables low energy electrons at the sample (0-100 eV) to be used for high resolution (2 nm) image formation, diffraction, and spectroscopy. This form of microscopy came to fruition in the early 1990’s, much later than other forms of electron microscopy, and has undergone a rapid development since.

In this talk I will discuss some of the principles and unique capabilities of cathode lens microscopy (as it is generally known), and illustrate its wide range of applications with recent examples from our research program, including growth and properties of 2D materials, occupied and unoccupied momentum-resolved electronic structure, reflection/transmission experiments to study electron mean free path, and the effects of low energy electron irradiation on thin resist films. A unique feature of many of these experiments is that the lab is inside the electron microscope, rather than the other way around.I

School News

Light from supernova

Kelly leads study of Red-supergiant supernova images

School of Physics and Astronomy Professor Patrick Kelly led a team that has measured the size of a star dating back more than 11 billion years ago using images that show the evolution of the star
Sauviz Alaei

Alaei named Apker Finalist

Sauviz Alaei, B.S. Physics, 22 was named a 2022 Leroy Apker Award Finalist by the American Physical Society. The LeRoy Apker Award recognizes outstanding achievements in physics by undergraduate
Vlad Pribiag

Pribiag group creates first few-mode multi-terminal Josephson junction

Professor Vlad Pribiag from the School of Physics and Astronomy led a group effort that has experimentally realized a long-theorized few-mode multi-terminal Josephson junction.
Marie Lopez del Puerto

Lopez Del Puerto wins Excellence in Physics Education Award

Marie Lopez del Puerto, (Physics PhD, ‘08), currently Professor and Chair of the Department of Physics at the University of St. Thomas in St. Paul, was a recent recipient of the American Physical
Maxim Pospelov

Pospelov named APS Fellow

Maxim Pospelov, Professor of the School of Physics and Astronomy, has been named a Fellow of the American Physical Society.
Anatoly Larkin

2022 Larkin Awards announced

The inaugural Fine Theoretical Physics Institute Larkin Awards have been announced.
TURBO telescope

Kelly receives $1 million grant to build superfast ‘TURBO’ telescopes

A team led by School of Physics and Astronomy Assistant Professor, Patrick Kelly, is constructing two sets of telescopes that will open a new window into the collisions of neutron stars and black
Ben Messerly

Messerly wins Postdoc Award

Dr. Ben Messerly, postdoctoral researcher in the School of Physics and Astronomy, won a 2022 UMN Postdoc Award for Teaching and Mentoring.
Alexander McLeod

McLeod receives Young Scientist Prize

Assistant Professor Alex McLeod of the School of Physics and Astronomy has received the 2022 International Union of Pure and Applied Sciences Young Scientist Prize.
Ali Sulaiman

Ringleader: New faculty member is expert in planetary physics

This fall, the School will welcome Ali Sulaiman to the space physics group.

School of Physics and Astronomy Seminar Calendar