Results 121 to 130 of about 65,692 (330)

A Microscopic Derivation of the SO(5)-Symmetric Landau-Ginzburg Potential

, 1997
We construct a microscopic model of electron interactions which gives rise to both superconductivity and antiferromagnetism, and which admits an approximate SO(5) symmetry that relates these two phases.
C. P. Burgess, C. P. Burgess, D. L. Feder, E. Demler, I. S. Gradshteyn, J. M. Cline, J. Polchinski, M. Greiter, P.-C. Dai, R. MacKenzie, R. Ray, R. Shankar, S. Stintzing, S.-C. Zhang, V. S. Kapitonov   +14 more
core   +1 more source

Low‐Energy, Ultrafast Spin Reorientation at Competing Hybrid Interfaces with Tunable Operating Temperature

Advanced Materials, EarlyView.
A spin reorientation transition is generated at hybrid interfaces of Pt‐Co‐organic molecules in the vicinity of room temperature. This spin reorientation transition happens at an ultrafast scale and is controlled either through electrical current or fs laser pulse, introducing perpendicular magnetic anisotropy in formerly planar magnetised samples ...
Servet Ozdemir, Matthew Rogers, Jaka Strohsack, Hari Babu Vasili, Manuel Valvidares, Thahabh Haddadi, Parvathy Harikumar, David O'Regan, Gilberto Teobaldi, Timothy Moorsom, Mannan Ali, Gavin Burnell, B J Hickey, Tomaz Mertelj, Oscar Cespedes   +14 more
wiley   +1 more source

Does long-range antiferromagnetism help or inhibit superconductivity?

, 1998
We analyze the possible existence of a superconducting state in a background with long-range antiferromagnetism. We consider a generalized Hubbard model with nearest-neighbor correlated hopping in a square lattice. Near half filling, the model exhibits a
Aligia, A. A., Arrachea, Liliana
core   +1 more source

Spontaneous In‐Plane Anomalous Hall Response Observed in a Ferromagnetic Oxide

Advanced Materials, EarlyView.
Observation of in‐plane anomalous Hall effect (AHE) is demonstrated in a typical ferromagnet SrRuO3. The (111)‐orientated ultrathin films with in‐plane easy axes exhibit spontaneous AHE at zero field, which is controllable via its intrinsic coupling to the in‐plane spin magnetization through higher order effects allowed by symmetry, revealing the ...
Shinichi Nishihaya, Yuta Matsuki, Haruto Kaminakamura, Hiroki Sugeno, Ming‐Chun Jiang, Yoshiya Murakami, Ryotaro Arita, Hiroaki Ishizuka, Masaki Uchida   +8 more
wiley   +1 more source

Uncovering the Hidden Order in URu2Si2 by Impurity Doping

, 2009
We report the use of impurities to probe the hidden order parameter of the strongly correlated metal URu_2Si_2 below the transition temperature T_0 ~ 17.5 K.
Baek, S. -H., Balatsky, A. V., Bauer, E. D., Cooley, J. C., Curro, N. J., Graf, M. J., Smith, J. L.   +6 more
core   +1 more source

Néel Tensor Torque in Polycrystalline Antiferromagnets

Advanced Materials, EarlyView.
This work introduces a Néel tensor torque based on a rank‐two symmetric tensor capturing spin correlations in a polycrystalline antiferromagnet. It shows the Néel tensor can be shaped and reshaped through the spin‐orbit torque (SOT) technique, enabling field‐free SOT switching with a specific polarity of the adjacent ferromagnet. This discovery opens a
Chao‐Yao Yang, Sheng‐Huai Chen, Chih‐Hsiang Tseng, Hsiu‐Hau Lin, Chih‐Huang Lai   +4 more
wiley   +1 more source

Super-exchange theory for polyvalent anion magnets

New Journal of Physics, 2019
The Goodenough–Kanamori–Anderson (GKA) rules have been widely applied for explaining the magnetic properties induced by super-exchange interaction. As conclusions of the super-exchange theory, they reveal the antiferromagnetic (ferromagnetic) ordering ...
Fang Zhang, You-Chao Kong, Rui Pang, Liang Hu, Peng-Lai Gong, Xing-Qiang Shi, Zi-Kang Tang   +6 more
doaj   +1 more source

Pressure-induced superconductivity in Eu$_{0.5}$Ca$_{0.5}$Fe$_2$As$_2$ : FeAs-based superconductivity hidden by antiferromagnetism of Eu sublattice

, 2009
To clarify superconductivity in EuFe2As2 hidden by antiferromagnetism of Eu2+, we investigated a Ca-substituted sample, Eu0.5Ca0.5Fe2As2, under high pressure.
Alireza P. L., Anumpam, Chen X. F., de la Cruz C., Eisaki H., He Y., Herrero-Martin J., Ishikawa F., Ishikawa M., Jeevan H. S., Jiang S., Jørgensen J.-E., Kamihara Y., Kasahara S., Kotegawa H., Kotegawa H., Lee H., Leithe-Jasper A., Miclea C. F., Ni N., Nomura T., Park T., Ren Z., Ren Z., Rotter M., Rotter M., Sasmal K., Sefat A. S., Terashima T., Torikachvili M. S., Wu G., Xiao Y., Yu W.   +32 more
core   +1 more source

Strain Engineering of Magnetoresistance and Magnetic Anisotropy in CrSBr

Advanced Materials, EarlyView.
Biaxial compressive strain significantly enhances magnetoresistance and critical saturation fields in thin flakes of the 2D magnet CrSBr, along all three crystallographic axes. First‐principles calculations link these effects to strain‐induced increases in exchange interactions and magnetic anisotropy.
Eudomar Henríquez‐Guerra, Alberto M. Ruiz, Marta Galbiati, Álvaro Cortés‐Flores, Daniel Brown, Esteban Zamora‐Amo, Lisa Almonte, Andrei Shumilin, Juan Salvador‐Sánchez, Ana Pérez‐Rodríguez, Iñaki Orue, Andrés Cantarero, Andres Castellanos‐Gomez, Federico Mompeán, Mar Garcia‐Hernandez, Efrén Navarro‐Moratalla, Enrique Diez, Mario Amado, José J. Baldoví, M. Reyes Calvo   +19 more
wiley   +1 more source

A Unified Description of Cuprate and Iron Arsenide Superconductors

, 2009
We propose a unified description of cuprate and iron-based superconductivity. Consistency with magnetic structure inferred from neutron scattering implies significant constraints on the symmetry of the pairing gap for the iron-based superconductors.
A. Kawabata, A. Moreo, C. Cruz de la, Cheng-Li Wu, D. Parker, G. F. Chen, G. F. Chen, G. F. Chen, G. Mu, G. Mu, G. Xu, H. Ding, H. H. Wen, H. J. Grafe, H. Mukuda, H. Y. Liu, J. Dong, K. Ahilan, K. Hashimoto, K. Haule, K. Kuroki, K. Matano, K. Nakayama, K. Seo, L. A. Wu, L. Shan, L. Zhao, M. Daghofer, M. M. Parish, M. W. Guidry, M. W. Guidry, M. W. Guidry, Mike Guidry, O. Millo, Q. Si, T. Kondo, T. Sato, T. Watanabe, T. Y. Chen, W. C. Lee, X. Dai, X. H. Chen, Y. Ishida, Y. Kamihara, Y. Kamihara, Y. L. Wang, Y. Nakai, Y. Sun, Y. Sun, Y. Sun, Y. Zhou, Yang Sun, Z. A. Ren, Z. A. Ren, Z. J. Yao   +54 more
core   +1 more source