Results 11 to 20 of about 8,054 (205)

Mechanism of Anomalous Anisotropic Colossal Magnetoresistance in Quasi‐2D Mn3Si2Te6 Bulk Single Crystal [PDF]

Advanced Science
Mn3Si2Te6, quasi‐2D ferrimagnetic semiconductor, exhibits anomalous saturated colossal magnetoresistance (CMR) only when a magnetic field is applied along its magnetic hard magnetization axis, suggesting unconventional underlying physics and promising ...
Shiqi Li, Xiong He, Shuai Li, Tianyi Li, Wenhao Zhang, Lizhi Yi, Guangduo Lu, Zhengcai Xia, Yunli Xu, John Q Xiao, Liqing Pan   +10 more
doaj   +3 more sources

Extreme magnetoresistance at high-mobility oxide heterointerfaces with dynamic defect tunability [PDF]

Nature Communications
Magnetic field-induced changes in the electrical resistance of materials reveal insights into the fundamental properties governing their electronic and magnetic behavior. Various classes of magnetoresistance have been realized, including giant, colossal,
D. V. Christensen, T. S. Steegemans, T. D. Pomar, Y. Z. Chen, A. Smith, V. N. Strocov, B. Kalisky, N. Pryds   +7 more
doaj   +2 more sources

Spin colossal magnetoresistance in an antiferromagnetic insulator [PDF]

Nature Materials, 2018
Colossal magnetoresistance (CMR) refers to a large change in electrical conductivity induced by a magnetic field in the vicinity of a metal-insulator transition and has inspired extensive studies for decades\cite{Ramirez1997, Tokura2006}. Here we demonstrate an analogous spin effect near the N el temperature $T_{\rm{N}}$=296 K of the antiferromagnetic
, Dazhi Hou, Joseph Barker
exaly   +5 more sources

Colossal magnetoresistance of Nd-doped LaCaMnO3 polycrystalline ceramics [PDF]

Processing and Application of Ceramics, 2021
The cation doped polycrystalline compound La0.5Nd0.15Ca0.35MnO3 has been synthesized by a conventional solid state reaction method. The Rietveld analysis of the powder XRD of the composites reveals an orthorhombic structure with Pbnm space group symmetry.
Rajan Sam, Kumar Arun K.V., Isac Jayakumari   +2 more
doaj   +1 more source

Striping of orbital-order with charge-disorder in optimally doped manganites

Nature Communications, 2021
Manganite perovskites display the intriguing property of colossal magnetoresistance (CMR), but only at very specific doping values. Now, a detailed crystallographic analysis of a prototype system reveals a novel type of orbital ordering that coexists ...
Wei-Tin Chen, Chin-Wei Wang, Ching-Chia Cheng, Yu-Chun Chuang, Arkadiy Simonov, Nicholas C. Bristowe, Mark S. Senn   +6 more
doaj   +1 more source

Influence of Mn site doping on electrical resistivity of polycrystalline La1-yAyMn1-xBxO3 (A=Ba, Sr; B=Cu, Cr, Co) Manganites [PDF]

Science of Sintering, 2008
We have the measured electrical resistivity of La1-yBayMn1-xCuxO3 (0.17≤y≤0.30; 0.04≤x≤0.10), La1-ySryMn1-xCrxO3 and La1-ySryMn1-xCoxO3 (0.270≤y≤0.294; 0.02≤x≤0.10) polycrystalline samples in the 25-325 K temperature range. The increase of Mn site doping
Paunović N., Popović Z.V., Cantarero A., Sapina F.   +3 more
doaj   +1 more source

Colossal-magnetoresistive manganite thin films [PDF]

Journal of Physics: Condensed Matter, 2001
Mixed-valence perovskite manganites (Re$_{1-x}$A$_{x}$MnO$_{3}$ where Re=rare earth, A=alkaline earth) provide a unique opportunity to study the relationships between the structure and the magnetotransport properties due to an interplay among charge carriers, magnetic coupling, orbital ordering and structural distortion. This makes these compounds very
Prellier, W., Lecoeur, Ph., Mercey, B.
openaire   +3 more sources

Consecutive topological phase transitions and colossal magnetoresistance in a magnetic topological semimetal

npj Quantum Materials, 2022
The combination of magnetic symmetries and electronic band topology provides a promising route for realizing topologically nontrivial quasiparticles, and the manipulation of magnetic structures may enable the switching between topological phases, with ...
Feng Du, Lin Yang, Zhiyong Nie, Ninghua Wu, Yong Li, Shuaishuai Luo, Ye Chen, Dajun Su, Michael Smidman, Youguo Shi, Chao Cao, Frank Steglich, Yu Song, Huiqiu Yuan   +13 more
doaj   +1 more source

Percolation mechanism for colossal magnetoresistance [PDF]

Computational Materials Science, 1998
We argue that colossal magnetoresistance is a critical phenomenon and propose a mechanism to describe it. The mechanism relies on the halfmetallic behavior of the materials showing colossal magnetoresistance, and yields a correlated percolation model that, we argue, captures all qualitative features of colossal magnetoresistance, above as well as below
Bastiaansen, Paul J. M., Knops, Hubert J. F.   +1 more
openaire   +2 more sources

Mixed orbital states and modulated crystal structures in La1−x Ca x MnO3 deduced from synchrotron X-ray diffraction

Communications Physics, 2023
In the model manganese perovskites La1−x Ca x MnO3, several important phenomena have been observed, including ferromagnetic metallic/insulating states, colossal magnetoresistance effects, and charge- and orbital-ordered states.
Michael Pissas, Dimosthenis Stamopoulos, Kosmas Prassides   +2 more
doaj   +1 more source