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In a previous paper (Avotina et al.,Phys. Rev. B Vol.71, 115430 (2005)) we have shown that in principle it is possible to image the defect positions below a metal surface by means of a scanning tunnelling microscope. The principle relies on…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Ye. S. Avotina , Yu. A. Kolesnichenko , A. F. Otte , J. M. van Ruitenbeek

The effect of incoherent interlayer transport on the interlayer resistance of a layered metal is considered. We find that for both quasi-one-dimensional and quasi-two-dimensional Fermi liquids the angular dependence of the magnetoresistance…

Strongly Correlated Electrons · Physics 2009-10-31 Ross H. McKenzie , Perez Moses

Using a generalized RPA-type theory we calculate the in-plane anisotropy of the magnetic excitations in hole-doped high-$T_c$ superconductors. Extending our earlier Fermi-liquid based studies on the resonance peak by inclusion of…

Superconductivity · Physics 2009-11-10 I. Eremin , D. Manske

To identify the contributions of the multiband nature and the anisotropy of a microscopic electronic structure to a macroscopic vortex lattice morphology, we develop a method based on the Eilenberger theory near Hc2 combined with the…

Superconductivity · Physics 2014-04-22 Tomoya Hirano , Kenta Takamori , Masanori Ichioka , Kazushige Machida

We demonstrate that the absence of stable quasiparticle excitations on parts of the Fermi surface, similar to the "nodal-antinodal dichotomy" in underdoped cuprate superconductors, can be reproduced in models of strongly correlated…

Strongly Correlated Electrons · Physics 2023-06-21 Ronnie Rodgers , Jewel Kumar Ghosh , Alexander Krikun

The quasi-static transverse conductivity of clean Fermi liquids at long wavelengths displays a remarkably universal behaviour: it is determined solely by the radius of curvature of the Fermi surface and does not depend on details such as…

Mesoscale and Nanoscale Physics · Physics 2024-09-17 Mark Morgenthaler , Inti Sodemann Villadiego

The electric magnetochiral anisotropy is a nonreciprocal phenomenon accessible via second harmonic transport in noncentrosymmetric, time-reversal invariant materials, in which the rectification of current, ${\bf I}$, can be controlled by an…

We measured the transverse magnetoresistivity of the mixed valence compound $\alpha$-YbAlB$_4$. Two configurations were used where current was applied along [110] direction for both and magnetic field was applied along [-110] and $c$-axis.…

Strongly Correlated Electrons · Physics 2015-06-23 Yosuke Matsumoto , Jinpyo Hong , Kentaro Kuga , Satoru Nakatsuji

The total reciprocal space magnetic flux threading through a closed Fermi surface is a topological invariant for a three-dimensional metal. For a Weyl metal, the invariant is non-zero for each of its Fermi surfaces. We show that such an…

Mesoscale and Nanoscale Physics · Physics 2013-05-06 Jianhui Zhou , Hua Jiang , Qian Niu , Junren Shi

We develop an analytically solvable model for interacting two-dimensional Fermi liquids with separate collisional relaxation rates for parity-odd and parity-even Fermi surface deformations. Such a disparity of collisional lifetimes exists…

Mesoscale and Nanoscale Physics · Physics 2022-11-23 Johannes Hofmann , Sankar Das Sarma

Cubic SrTiO$_{3}$ becomes tetragonal below 105 K. The antiferrodistortive (AFD) distortion leads to clockwise and counter-clockwise rotation of adjacent TiO$_{6}$ octahedra. This insulator becomes a metal upon the introduction of extremely…

Holographic properties of a finite density fermion system have been shown to exhibit many interesting behaviours which can be observed in future. In this paper, we study low energy fermion properties in the framework of the holographic…

High Energy Physics - Theory · Physics 2022-03-01 Sayan Chakrabarti , Debaprasad Maity , Wadbor Wahlang

Electronic transport in the $\alpha-\mathcal{T}_3$ model of pseudospin-1 fermions with a finite gap is studied within the semiclassical Boltzmann approximation. We show that coupling of the orbital magnetic moment to the external magnetic…

Mesoscale and Nanoscale Physics · Physics 2023-07-12 Adesh Singh , G. Sharma

Linear magnetoresistance is a phenomenon that has been observed in a few topological compounds that originate from classical and quantum phenomena. Here, we performed electrical transport measurements, in zero and applied magnetic fields,…

Strongly Correlated Electrons · Physics 2021-08-19 Vikas Saini , Souvik Sasmal , Ruta Kulkarni , Arumugam Thamizhavel

Quantum geometry plays a pivotal role in the second-order response of $\cal PT$-symmetric antiferromagnets. Here we study the nonlinear response of 2D altermagnets protected by $C_n\cal T$ symmetry and show that their leading nonlinear…

Mesoscale and Nanoscale Physics · Physics 2025-05-13 Yuan Fang , Jennifer Cano , Sayed Ali Akbar Ghorashi

Magnetic topological semimetals, a novel state of quantum matter with nontrivial band topology, have emerged as a new frontier in physics and materials science. An external stimulus like temperature or magnetic field could be expected to…

Memory effects can have a profound impact on the resistivity of semiconductor systems, resulting in giant negative magnetoresistance and MIRO phenomena. This work opens the discussion of the memory effects in 3D conducting systems featured…

Mesoscale and Nanoscale Physics · Physics 2021-08-11 K. S. Denisov , K. A. Baryshnikov , P. S. Alekseev , N. S. Averkiev

A nodal loop is formed by band crossing along a one-dimensional closed manifold, with each point on the loop a linear nodal point in the transverse dimensions and can be classified as type-I or type-II depending on the band dispersion.…

Mesoscale and Nanoscale Physics · Physics 2018-03-29 Xiaoming Zhang , Zhi-Ming Yu , Yunhao Lu , Xian-Lei Sheng , Hui Ying Yang , Shengyuan A. Yang

As a probe to determine the pairing symmetry of quasi-two-dimensional anisotropic superconductors, we propose tunneling spectroscopy in the presence of magnetic field, where the magnetic field is parallel to the two dimensional planes and…

Superconductivity · Physics 2009-11-07 Y. Tanuma , Y. Tanaka , K. Kuroki , S. Kashiwaya

We analyze the thermoelectric response in layered metals with spontaneously broken rotation symmetry. We identify the anisotropy of the quasiparticle Nernst signal as an extremely sensitive probe of Fermi surface distortions characteristic…

Superconductivity · Physics 2009-12-31 Andreas Hackl , Matthias Vojta