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Investigating solids with light gives direct access to charge dynamics, electronic and magnetic excitations. For heavy fermions, one has to adjust the frequency of the probing light to the small characteristic energy scales, leading to…

Theoretical and experimental work concerned with dynamic fluctuations has developed into a very active and fascinating subfield of mesoscopic physics. We present a review of this development focusing on shot noise in small electric…

Mesoscale and Nanoscale Physics · Physics 2016-08-31 Ya. M. Blanter , M. Buttiker

Hyperscaling violating `strange metal' phase of heavy fermion compounds can be described holographically by probe D-branes in the background of a Lifshitz space-time (dynamical exponent $z$ and spatial dimensions $d$) with hyperscaling…

High Energy Physics - Theory · Physics 2015-06-16 Parijat Dey , Shibaji Roy

Fluctuations pose fundamental limitations in making sensitive measurements, yet at the same time, noise unravels properties that are inaccessible at the level of the averaged signal. In electronic devices, shot noise arises from the…

Mesoscale and Nanoscale Physics · Physics 2019-07-22 Anqi Mu , Ofir Shein Lumbroso , Oren Tal , Dvira Segal

Heavy-Fermions provide an extreme example of the utility of the idea of continuity and analyticity in physics. Their discovery and study in the past thirty years has added a fascinating chapter to condensed matter physics. I briefly review…

Strongly Correlated Electrons · Physics 2016-08-31 C. M. Varma

Solids with strong electron correlations generally develop exotic phases of electron matter at low temperatures. Among such systems, the heavy-fermion semi-metal URu2Si2 presents an enigmatic transition at To = 17.5 K to a `hidden order'…

Strongly Correlated Electrons · Physics 2009-07-25 A. F. Santander-Syro , M. Klein , F. L. Boariu , A. Nuber , P. Lejay , F. Reinert

Superfluidity is a macroscopic quantum phenomenon, which shows up below a critical temperature and leads to a peculiar behavior of matter, with frictionless flow, the formation of quantized vortices, and the quenching of the moment of…

We report on a new state of matter manifested by strongly correlated Fermi systems including various heavy-fermion (HF) metals, two-dimensional quantum liquids such as $\rm ^3He$ films, certain quasicrystals, and systems behaving as quantum…

We study longitudinal magnetotransport in disorder-free cylindrical Weyl semimetal nanowires. Our theory includes a magnetic flux $\Phi$ piercing the nanowire and captures the finite curvature of the Fermi arc in the surface Brillouin zone…

Mesoscale and Nanoscale Physics · Physics 2021-10-20 Alessandro De Martino , Kathrin Dorn , Francesco Buccheri , Reinhold Egger

The discovery of high-transition temperature (high-Tc) superconductivity near antiferromagnetism in iron arsenides raised the possibility of an unconventional superconducting mechansim1-8. The observation of clear Fermi surfaces and…

Fermi liquid theory provides a remarkably powerful framework for the description of the conduction electrons in metals and their ordering phenomena, such as superconductivity, ferromagnetism, and spin- and charge-density-wave order. A…

Strongly Correlated Electrons · Physics 2014-04-17 R. Ritz , M. Halder , M. Wagner , C. Franz , A. Bauer , C. Pfleiderer

Strange metallicity, characterized by a linear temperature dependence of the resistivity, is observed in a broad range of correlated materials, including heavy-fermion compounds and cuprate superconductors. It has also recently been…

Strongly Correlated Electrons · Physics 2026-05-21 Ruslan Mushkaev , Francesco Petocchi , Philipp Werner

An introduction to the physics of heavy fermion compounds is presented, attempting to highlight the conceptual developments and emphasize the mysteries and open questions that persist in this active field of research.

Strongly Correlated Electrons · Physics 2008-05-15 P. Coleman

We study shot noise in the current of quantum dots whose low-energy behaviour corresponds to an SU(N) Kondo model, focusing on the case N=4 relevant to carbon nanotube dots. For general N, two-particle Fermi liquid interactions have two…

Mesoscale and Nanoscale Physics · Physics 2008-01-24 P. Vitushinsky , A. A. Clerk , K. Le Hur

In strongly correlated quantum materials, electrons behave in ways that often extend beyond the confines of conventional Fermi-liquid theory. Interesting results include the observation of low-temperature metallic behavior in systems that…

Strongly Correlated Electrons · Physics 2024-05-20 Sanfeng Wu

Slow oscillations of the interlayer magnetoresistance observed in the layered organic metal $\beta $-(BEDT-TTF)$_2$IBr$_2$ are shown to originate from the slight warping of its Fermi surface rather than from independent small cyclotron…

Condensed Matter · Physics 2016-08-31 M. V. Kartsovnik , P. D. Grigoriev , W. Biberacher , N. D. Kushch , P. Wyder

Experimental investigations of current shot noise in quantum point contacts show a reduction of the noise near the 0.7 anomaly. It is demonstrated that such a reduction naturally arises in a model proposed recently to explain the…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 A. Golub , T. Aono , Yigal Meir

We study a shot noise of a wide channel gated high-frequency transistor at temperature of 4.2K near pinch-off. In this regime, a transition from the metallic to the insulating state is expected to occur, accompanied by the increase of the…

Mesoscale and Nanoscale Physics · Physics 2015-05-19 V. S. Khrapai , D. V. Shovkun

The heavy-fermion superconductor CeCu$_{2}$Si$_{2}$ exhibits two-band, $d$-wave superconductivity with a finite energy gap over the whole Fermi surface around the magnetic instability where 4$f$ antiferrerromagnetic order is suppressed. In…

Superconductivity · Physics 2023-06-21 Z. Y. Shan , M. Smidman , O. Stockert , Y. Liu , H. Q. Yuan , P. J. Sun , S. Wirth , E. Schuberth , F. Steglich

We show that a small number of intentionally introduced defects can be used as a spectroscopic tool to amplify quasiparticle interference in 2H-NbSe$_{2}$, that we measure by scanning tunneling spectroscopic imaging. We show from the…

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