Fermions | Electronic band structures
Fermi liquid theory (also known as Landau's Fermi-liquid theory) is a theoretical model of interacting fermions that describes the normal state of most metals at sufficiently low temperatures. The interactions among the particles of the many-body system do not need to be small. The phenomenological theory of Fermi liquids was introduced by the Soviet physicist Lev Davidovich Landau in 1956, and later developed by Alexei Abrikosov and Isaak Khalatnikov using diagrammatic perturbation theory. The theory explains why some of the properties of an interacting fermion system are very similar to those of the ideal Fermi gas (i.e. non-interacting fermions), and why other properties differ. Important examples of where Fermi liquid theory has been successfully applied are most notably electrons in most metals and liquid helium-3. Liquid helium-3 is a Fermi liquid at low temperatures (but not low enough to be in its superfluid phase). Helium-3 is an isotope of helium, with 2 protons, 1 neutron and 2 electrons per atom. Because there is an odd number of fermions inside the nucleus, the atom itself is also a fermion. The electrons in a normal (non-superconducting) metal also form a Fermi liquid, as do the nucleons (protons and neutrons) in an atomic nucleus. Strontium ruthenate displays some key properties of Fermi liquids, despite being a strongly correlated material, and is compared with high temperature superconductors like cuprates. (Wikipedia).
If there’s one thing that we think we understand, it’s matter. After all, matter makes up everything around us; it even makes up you. However, all is not as it seems. Over the last century, scientists have learned about the building blocks of matter, starting with atoms. It turns out t
From playlist Fermilab Featured Videos
Why Ferrofluid is Revolutionary
Ferrofluid is a type of fluid that contains suspended micro particles of iron, magnetite or cobalt in a solvent. The solvent is typically an organic fluid as a carrier, or water in some special cases where oil can be dangerous to use. Join our YouTube channel by clicking here: https://b
From playlist Materials Lab
Fermions in synthetic gauge fields and synthetic dimensions by Vijay Shenoy
New questions in quantum field theory from condensed matter theory URL: http://www.icts.res.in/discussion_meeting/qft2015/ Description:- The last couple of decades have seen a major revolution in the field of condensed matter physics, where the severe limitations of conventional paradigm
From playlist New questions in quantum field theory from condensed matter theory
Dominic Else - Emergent Symmetries and Anomalies in Metals: Luttinger's Theorem and Beyond
Séminaire organisé le 23 novembre 2021 Metals are an interesting class of gapless quantum many-body systems. Many metals are described by the famous "Fermi liquid theory" at low temperatures, but there are also many metallic materials for which Fermi liquid theory is an inadequate descrip
From playlist Quantum Encounters Seminar - Quantum Information, Condensed Matter, Quantum Field Theory
In particle physics, there are many different types of particles, mostly ending with the phrase “-on.” In this video, Fermilab’s Dr. Don Lincoln talks about fermions and bosons and what is the key difference between these two particles.
From playlist Fermilab Featured Videos
Andy Lucas: "Electron hydrodynamics with a polygon Fermi surface"
Theory and Computation for 2D Materials "Electron hydrodynamics with a polygon Fermi surface" Andy Lucas, University of Colorado, Boulder Abstract: I will discuss a cartoon model for the onset of hydrodynamic behavior in an electron fluid with a polygon Fermi surface. Some interesting fe
From playlist Theory and Computation for 2D Materials 2020
Making ferrofluid from scratch
Back in October, I tried making ferrofluid but I kept failing and I ended up giving up for a while. Months later though, I got inspired, and I spent an insane amount of time researching ferrofluid and trying to make it. It was a very messy and sometimes frustrating process, but I was event
From playlist Long Projects (25 min+)
Patterns in a ferrofluid film confined between glass sheets, under water. Neodymium magnet moved by hand from below. See http://www.electricstuff.co.uk/ferro.html for more info
From playlist Projects & Installations
Compressible Quantum Matter: General Constraints, Emergent Symmetries, and Anom... - Senthil Todadri
High Energy Theory Seminar Compressible Quantum Matter: General Constraints, Emergent Symmetries, and Anomalies Speaker: Senthil Todadri Affiliation: Massachusetts Institute of Technology Date: October 12, 2020 For more video please visit http://video.ias.edu
From playlist Mathematics
Emergent Symmetries, Luttinger's Theorem and 't Hooft Anomalies in Metals by Senthil Todadri
DISCUSSION MEETING TOPOLOGICAL ASPECTS OF STRONG CORRELATIONS AND GAUGE THEORIES (ONLINE) ORGANIZERS: Rob Pisarski (Brookhaven National Laboratory, USA), Sumathi Rao (HRI, India), Soeren Schlichting (Bielefeld University, Germany) and Sayantan Sharma (IMSc, India) DATE: 06 September 202
From playlist Topological aspects of strong correlations and gauge theories (ONLINE)
Emergent Gauge Fields in Metals and Violations of the Luttinger Theorem, by Subir Sachdev
DISCUSSION MEETING TOPOLOGICAL ASPECTS OF STRONG CORRELATIONS AND GAUGE THEORIES (ONLINE) ORGANIZERS: Rob Pisarski (Brookhaven National Laboratory, USA), Sumathi Rao (HRI, India), Soeren Schlichting (Bielefeld University, Germany) and Sayantan Sharma (IMSc, India) DATE: 06 September 202
From playlist Topological aspects of strong correlations and gauge theories (ONLINE)
Quantum Phases of Matter XXII - Fractionalized metallic phases in the single band - Subir Sachdev
Joint Course with TIFR, IAS and ICTS Quantum Phases of Matter XXII - Fractionalized metallic phases in the single band Hubbard model - Subir Sachdev Speaker: Subir Sachdev Date: December 01, 2021 Table of Contents (powered by https://videoken.com) 0:00:00 Start 0:00:15 Introduction 0:0
From playlist The Quantum Phases of Matter by Subir Sachdev
Quantum Phases of Matter XXI - Non-perturbative Luttinger relations - Subir Sachdev
Joint Course with TIFR, IAS and ICTS Quantum Phases of Matter XXI - Non-perturbative Luttinger relations - Subir Sachdev Speaker: Subir Sachdev Date: November 29, 2021 Table of Contents (powered by https://videoken.com) 0:00:00 Quantum Phases of Matter XXI - Non-perturbative Luttinger re
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MagLab Theory Winter School 2019: Andrey Chubukov "vs Non-Fermi liquid"
Topic: Superconductivity vs non Fermi liquid near a quantum-critical point The National MagLab held it's seventh Theory Winter School in Tallahassee, FL from January 7th - 11th, 2019.
From playlist 2019 Theory Winter School
Higher-dimensional sachdev-ye-kitaev non-fermiliquids at lifshitz transitions by Sumilan Banerjee
Indian Statistical Physics Community Meeting 2018 DATE:16 February 2018 to 18 February 2018 VENUE:Ramanujan Lecture Hall, ICTS Bangalore This is an annual discussion meeting of the Indian statistical physics community which is attended by scientists, postdoctoral fellows, and graduate s
From playlist Indian Statistical Physics Community Meeting 2018
Fermium - Periodic Table of Videos
Fermium is named after a pioneer in the field of radioactivity and nuclear power, Enrico Fermi. More links in description below ↓↓↓ Support Periodic Videos on Patreon: https://www.patreon.com/periodicvideos A video on every element: http://bit.ly/118elements More at http://www.periodicv
From playlist With Portuguese subtitles (Português) - Periodic Videos
Quantum Phases of Matter XXV - Fermi surfaces without quasiparticles - Subir Sachdev
Joint Course with TIFR, IAS and ICTS Quantum Phases of Matter XXV - Fermi surfaces without quasiparticles - Subir Sachdev Speaker: Subir Sachdev Date: December 08, 2021 Table of Contents (powered by https://videoken.com) 0:00:00 Start 0:00:16 Introduction 0:01:21 Getting Started 0:08:
From playlist The Quantum Phases of Matter by Subir Sachdev