Results 111 to 120 of about 7,189,276 (273)

Chiral degeneracies and Fermi-surface Chern numbers in bcc Fe [PDF]

, 2015
The degeneracies in the spinor bandstructure of bcc Fe are studied from first principles. We find numerous isolated band touchings carrying chiral charges of magnitude one (Weyl points) or two (double-Weyl nodes), as well as nonchiral degeneracy loops ...
D. Gosálbez-Martínez, Ivo Souza, D. Vanderbilt   +2 more
semanticscholar   +1 more source

The pseudochiral Fermi surface of α-RuI3

Communications Physics
In continuation of research into RuCl3 and RuBr3 as potential quantum spin liquids, a phase with unique magnetic order characterised by long-range quantum entanglement and fractionalised excitations, the compound RuI3 has been recently synthesised. Here,
Alex Louat, Matthew D. Watson, Timur K. Kim, Danrui Ni, Robert J. Cava, Cephise Cacho   +5 more
doaj   +1 more source

Spin-Fluctuation-Induced Non-Fermi-Liquid Behavior with Suppressed Superconductivity in LiFe_{1−x}Co_{x}As

Physical Review X, 2015
We study a series of LiFe_{1−x}Co_{x}As compounds with different Co concentrations by transport, optical spectroscopy, angle-resolved photoemission spectroscopy, and nuclear magnetic resonance.
Y. M. Dai, H. Miao, L. Y. Xing, X. C. Wang, P. S. Wang, H. Xiao, T. Qian, P. Richard, X. G. Qiu, W. Yu, C. Q. Jin, Z. Wang, P. D. Johnson, C. C. Homes, H. Ding   +14 more
doaj   +1 more source

Anisotropic Zeeman Splitting in YbNi4P2

SciPost Physics, 2018
The electronic structure of heavy-fermion materials is highly renormalised at low temperatures with localised moments contributing to the electronic excitation spectrum via the Kondo effect.
Sara Karbassi, Saman Ghannadzadeh, Kristin Kliemt, Manuel Brando, Cornelius Krellner, Sven Friedemann
doaj   +1 more source

The asymmetric Fermi surface of Bi2201

SciPost Physics
High-resolution angle-resolved photoemission spectroscopy (ARPES) performed on the single-layered cuprate (Pb$_{1-y}$,Bi$_y$)$_2$Sr$_{2-x}$La$_x$CuO$_{6+\delta}$ (Bi2201) reveals a 6-10% difference in the nodal $k_F$ vectors along the $\Gamma$Y and ...
Steef Smit, Kourosh L. Shirkoohi, Saumya Mukherjee, Sergio Barquero Pierantoni, Lewis Bawden, Erik van Heumen, Arnaud P. N. Tchiomo, Jans Henke, Jasper van Wezel, Yingkai Huang, Takeshi Kondo, Tsunehiro Takeuchi, Timur K. Kim, Cephise Cacho, Marta Zonno, Sergey Gorovikov, Stephen B. Dugdale, Jorge I. Facio, Mariia Roslova, Laura Folkers, Anna Isaeva, Nigel E. Hussey, Mark S. Golden
doaj   +1 more source

Interplay between disorder and inversion symmetry: Extreme enhancement of the mobility near the Weyl point in BiTeI

, 2015
We show experimental and theoretical evidence that BiTeI hosts a novel disordered metallic state named diffusive helical Fermi liquid (DHFL), characterized by a pair of concentric spin-chiral Fermi surfaces with negligible inter-valley scattering.
Kim, Heon-Jung, Kim, Ki-Seok, Kim, Kyoung-Min, Kitaura, M., Kulbachinskii, V. A., Ohnishi, A., Sasaki, M., Tomita, N.   +7 more
core   +1 more source

Hall effect and Fermi surface reconstruction via electron pockets in the high-Tc cuprates [PDF]

, 2015
The mechanism by which the Fermi surface of high-Tc cuprates undergoes a dramatic change from a large hole-like barrel to small arcs or pockets on entering the pseudogap phase remains a question of fundamental importance.
J. Storey
semanticscholar   +1 more source

Observation of the J-sheet of the Fermi surface of YbRh2Si2

, 2009
We report a previously unobserved quantum oscillation frequency in YbRh2Si2. This is the first quantum oscillation that can definitely be assigned to the larger of the two major sheets of the Fermi surface predicted by band structure calculations ...
Ahuja, Beach, Custers, Daou, Friedemann, Fulde, Gegenwart, Gegenwart, King, Knebel, Norman, Paschen, Rourke, Rourke, Senthil, Shim, Shishido, Shoenberg, Taillefer, Tokiwa, Viola Kusminskiy, Wigger   +21 more
core   +1 more source

Life on the edge: a beginner’s guide to the Fermi surface

, 2016
The concept of the Fermi surface is at the very heart of our understanding of the metallic state. Displaying intricate and often complicated shapes, the Fermi surfaces of real metals are both aesthetically beautiful and subtly powerful.
S. Dugdale
semanticscholar   +1 more source

Mechanism and Verification of Photoelectric Regulation Characteristics of Two-Dimensional Photodetectors

IEEE Photonics Journal
Two-dimensional photodetectors have an important property that can improve the optical effect by adjusting the Fermi level, and have outstanding development prospects in the field of visible-infrared photoelectric detection.
Jiapeng Zhen, Shuai Huang, Silin Guo, Danping Zhang, Kehong Lv, Jing Qiu, Guanjun Liu   +6 more
doaj   +1 more source