Results 61 to 70 of about 30,572 (296)

Co-operative Kondo effect in the two-channel Kondo lattice [PDF]

Physical Review B, 1999
We discuss the possibility of a co-operative Kondo effect driven by channel interference in a Kondo lattice where local moments are coupled to a single Fermi sea via two orthogonal scattering channels. In this situation, the channel quantum number is not conserved.
Coleman, P., Tsvelik, A. M., Andrei, N., Kee, H. Y.   +3 more
openaire   +2 more sources

Tunable Kondo screening length at a Y-junction of three inhomogeneous spin chains

Nuclear Physics B, 2020
We derive the topological Kondo Hamiltonian describing a Y junction of three XX-spin chains connected to outer quantum Ising chains with different tilting angles for the Ising axis.
Domenico Giuliano, Andrea Nava, Pasquale Sodano   +2 more
doaj   +1 more source

Holographic impurities and Kondo effect

, 2016
Magnetic impurities are responsible for many interesting phenomena in condensed matter systems, notably the Kondo effect and quantum phase transitions. Here we present a holographic model of a magnetic impurity that captures the main physical properties ...
Erdmenger, Johanna, Flory, Mario, Wu, Jackson M.S., Newrzella, Max-Niklas, Hoyos, Carlos, O'Bannon, Andy, Jackson M. S. Wu, O'Bannon, Andrew, Max‐Niklas Newrzella, Wu, Jackson M. S., Mario Flory, Andy O'Bannon, Carlos Hoyos, Hoyos Badajoz, Carlos, Johanna Erdmenger   +14 more
core   +1 more source

Hybridization of an s-wave impurity with graphene lattice

Communications in Physics
Hybridization function is a quantity characterizing electron hoppings between an impurity and a host material in which the impurity resides, a full understandinging of it is crucial for studying correlation effects in various impurity problems.
Hoa Nghiem, Lam Pham, Linh Nguyen, Hùng Thế Đặng   +3 more
doaj   +1 more source

Spin‐Split Edge States in Metal‐Supported Graphene Nanoislands Obtained by CVD

Advanced Materials, EarlyView.
Combining STM measurements and ab‐initio calculations, we show that zig‐zag edges in graphene nanoislands grown on Ni(111) by CVD retrieve their spin‐polarized edge states after intercalation of a few monolayers of Au. ABSTRACT Spin‐split states localized on zigzag edges have been predicted for different free‐standing graphene nanostructures.
Michele Gastaldo, Masoud Mansouri, Carlos Garcia‐Fernandez, Daniel Sánchez‐Portal, Aran Garcia‐Lekue, Gustavo Ceballos, Aitor Mugarza   +6 more
wiley   +1 more source

Self-Doping and the Mott-Kondo Scenario for Infinite-Layer Nickelate Superconductors

Frontiers in Physics, 2022
We give a brief review of the Mott-Kondo scenario and its consequence in the recently-discovered infinite-layer nickelate superconductors. We argue that the parent state is a self-doped Mott insulator and propose an effective t- J-K model to account for ...
Yi-feng Yang, Yi-feng Yang, Yi-feng Yang, Guang-Ming Zhang, Guang-Ming Zhang   +4 more
doaj   +1 more source

Donor Extended Blue TADF Dendrimer for High‐Performance Solution‐Processed OLEDs

Advanced Science, EarlyView.
A dendronized MR‐TADF emitter, DOBNA‐SpAc‐DCz, was designed to improve solubility, hole transport, and exciton dynamics for solution‐processed OLEDs. Incorporation of ter(tert‐butylcarbazole) dendrons decreases ΔEST and accelerates RISC, yielding short delayed lifetimes (∼2 µs).
Mahni Fatahi, Yuka Yasuda, Ryo Kondo, Hironori Kaji, Eli Zysman‐Colman   +4 more
wiley   +1 more source

Topological Kondo Effect with Majorana Fermions [PDF]

Physical Review Letters, 2012
The Kondo effect is a striking consequence of the coupling of itinerant electrons to a quantum spin with degenerate energy levels. While degeneracies are commonly thought to arise from symmetries or fine-tuning of parameters, the recent emergence of Majorana fermions has brought to the fore an entirely different possibility: a "topological degeneracy ...
Béri, B., Cooper, N. R.
openaire   +3 more sources

Evaluation of Experienced Manipulation Characteristics in Robotic Surgery Using Log Data From the Hinotori Surgical System

Annals of Gastroenterological Surgery, EarlyView.
This study analyzed log data from the Japanese hinotori surgical robot to characterize manipulation performed by experienced surgeons in robotic surgery. Compared with less‐experienced surgeons, the experienced group demonstrated shorter task durations, reduced travel distances with the right instrument (Arm3), faster and more dynamically modulated ...
Masaki Saito, Shunsuke Hayakawa, Hiroyuki Sagawa, Tamiaki Kondo, Masanao Ohashi, Sunao Ito, Reo Sato, Hajime Ushigome, Kenta Saito, Ryo Ogawa, Hiroki Takahashi, Shuji Takiguchi   +11 more
wiley   +1 more source

Kondo Effect in Real Quantum Dots [PDF]

Physical Review Letters, 2001
Physical Review ...
Pustilnik, M., Glazman, L. I.
openaire   +3 more sources