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Emergence of novel quantum ground states in correlated electron systems with strong spin-orbit coupling has been a recent subject of intensive studies. While it has been realized that spin-orbit coupling can provide non-trivial band…

Strongly Correlated Electrons · Physics 2016-09-05 Robert Schaffer , Eric Kin-Ho Lee , Bohm-Jung Yang , Yong Baek Kim

The topology and spin-orbital polarization of two-dimensional (2D) surface electronic states have been extensively studied in this decade. One major interest in them is their close relationship with the parities of the bulk (3D) electronic…

Strongly Correlated Electrons · Physics 2022-09-27 Yoshiyuki Ohtsubo , Toru Nakaya , Takuto Nakamura , Patrick Le Fèvre , François Bertran , Fumitoshi Iga , Shin-Ichi Kimura

The spin-polarized surface states of topological insulators have attracted interest both from a fundamental and applied point of view. A recent proposal describes a method of probing these surface states with ferromagnetic contacts, which…

Mesoscale and Nanoscale Physics · Physics 2019-07-29 Johannes Geurs , Gihun Ryu , Chengtian Lin , Jurgen H. Smet

Selected problems of fundamental importance for spintronics and spin-polarized transport are reviewed, some of them with a special emphasis on their applications in quantum computing and coherent control of quantum dynamics. The role of the…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 S. Das Sarma , Jaroslav Fabian , Xuedong Hu , Igor Zutic

This review gives a rather general discussion of high temperature superconductors as an example of a strongly correlated material. The argument is made that in view of the many examples of unconventional superconductors discovered in the…

Strongly Correlated Electrons · Physics 2009-11-13 Patrick A. Lee

Proximity-induced superconductivity in three dimensional (3D) topological insulators forms a new quantum phase of matter and accommodates exotic quasiparticles such as Majorana bound states. One of the biggest drawbacks of the commonly…

Superconductivity is a remarkably widespread phenomenon observed in most metals cooled down to very low temperatures. The ubiquity of such conventional superconductors, and the wide range of associated critical temperatures, is readily…

Electronic correlation is believed to play an important role in exotic phenomena such as insulator-metal transition, colossal magneto resistance and high temperature superconductivity in correlated electron systems. Recently, it has been…

Since the discovery of iron-based superconductors (IBSs) on LaFePO in 2006, many types of IBSs have been fabricated. IBSs have usually been compared to cuprates and MgB2, and the methodology of research developed by them have been…

Superconductivity · Physics 2025-02-25 Kazumasa Iida

Motivated by the high sensitivity to Fermi surface topology and scattering mechanisms in magneto-thermoelectric transport, we have measured the thermopower and Nernst effect on the (011)-plane of the proposed topological Kondo insulator…

Strongly Correlated Electrons · Physics 2015-02-26 Yongkang Luo , Hua Chen , Jianhui Dai , Zhu-an Xu , J. D. Thompson

The prospective of optically inducing a spin polarized current for spintronic devices has generated a vast interest in the out-of-equilibrium electronic and spin structure of topological insulators (TIs). In this Letter we prove that only…

Heavy-fermion family exhibits fascinating and often puzzling properties due to the presence of open-shell $f$ ions and the complexity of the associated charge, orbital, and spin degrees of freedom. SmB$_6 $ is a prototypical heavy-fermion…

Kondo insulators are strongly correlated system in which a clean insulating gap emerges only at very low temperature due to many-body effects involving localized $f$-electrons. However, certain Kondo insulators, like SmB$_6$ and…

Strongly Correlated Electrons · Physics 2020-09-16 Sudeshna Sen , N. S. Vidhyadhiraja , Eduardo Miranda , Vladimir Dobrosavljević , Wei Ku

This article gives a brief overview of some recent advances in our understanding of the physics of dense strongly interacting matter, from measurements done at the CERN SPS. The presently available results are very interesting, and are…

High Energy Physics - Experiment · Physics 2009-11-07 Carlos Lourenco

This note is an extended version of the contribution to the CERN Council Open Symposium on European Strategy for Particle Physics. It discusses an experimental programme to explore the QCD confinement phenomena at CERN with a new…

Accelerator Physics · Physics 2012-08-21 Mieczyslaw Witold Krasny

SmB$_6$ has been predicted to be a Kondo Topological Insulator with topologically protected conducting surface states. We have studied quantitatively the electrical transport through surface states in high quality single crystals of…

Mesoscale and Nanoscale Physics · Physics 2015-02-12 Sangram Biswas , Ramya Nagarajan , Suman Sarkar , Kazi Rafsanjani Amin , M. Ciomaga Hatnean , S. Tewari , G. Balakrishnan , Aveek Bid

The peculiar metallic electronic states observed in the Kondo insulator, samarium hexaboride (SmB$_6$), has stimulated considerable attention among those studying non-trivial electronic phenomena. However, experimental studies of these…

Strongly Correlated Electrons · Physics 2019-05-27 Y. Ohtsubo , Y. Yamashita , K. Hagiwara , S. Ideta , K. Tanaka , R. Yukawa , K. Horiba , H. Kumigashira , K. Miyamoto , T. Okuda , W. Hirano , F. Iga , S. Kimura

Kondo insulators have recently aroused great interest because they are promising materials that host a topological insulator state caused by the strong electron interactions. Moreover, recent observations of the quantum oscillations in the…

Strongly Correlated Electrons · Physics 2021-07-22 Y. Sato , Z. Xiang , Y. Kasahara , S. Kasahara , Lu Chen , C. Tinsman , F. Iga , J. Singleton , N. L. Nair , N. Maksimovic , J. G. Analytis , Lu Li , Y. Matsuda

There has been strong interest recently in the so-called Cooper pair density wave, subsequent to the proposition that such a state occurs in the hole-doped cuprate superconductors. As of now there is no convincing demonstration of such a…

Strongly Correlated Electrons · Physics 2024-06-25 Sumit Mazumdar , R. Torsten Clay

This review describes recent groundbreaking results in Si, Si/SiGe and dopant-based quantum dots, and it highlights the remarkable advances in Si-based quantum physics that have occurred in the past few years. This progress has been…