Results 61 to 70 of about 8,054 (205)

Colossal enhancement of magnetoresistance in La$_{0.67}$Sr$_{0.33}$MnO$_{3}$ / Pr$_{0.67}$Ca$_{0.33}$MnO$_{3}$ multilayers: reproducing the phase-separation scenario

, 2008
Colossal enhancement of magnetoresistance has been achieved over a broad temperature range which extends upto the room temperature, in ferromagnetic metal-charge ordered insulator manganite multi-layers.
Das, I., Mukhopadhyay, Soumik
core   +1 more source

Hidden Charge‐Order in the Mixed‐Valent K0.75Li2Cr6O12 High‐Pressure Oxide

Advanced Science, EarlyView.
K0.75Li2Cr6O12 is one of the few mixed valent chromium oxides. It shows a single angle spiral magnetic structure with a k = [1/3 1/3 ¼] propagation vector. Density functional theory reveals a hidden charge order that is necessary to stabilize the antiferromagnetic (AFM) ground state.
Angel M. Arévalo‐López, Clemens Ritter, Marielle Huvé, Olivier Mentré   +3 more
wiley   +1 more source

Emergent Spin Fluctuation and Structural Metastability in Self‐Intercalated Cr1+xTe2${\rm Cr}_{1+x}{\rm Te}_2$ Compounds

Advanced Electronic Materials, EarlyView.
Metastable superstructure and emergent spin fluctuation in self‐intercalated Cr1+xTe2${\rm Cr}_{1+x}{\rm Te}_2$ ABSTRACT Intercalated van der Waals (vdW) magnetic materials host unique magnetic properties due to the interplay of competing interlayer and intralayer exchange couplings, which depend on the intercalant concentration within the van der ...
Clayton Conner, Ali Sarikhani, Theo Volz, Mathew Pollard, Mitchel Vaninger, Xiaoqing He, Steven Kelley, Jacob Cook, Avinash Sah, John Clark, Hunter Lucker, Cheng Zhang, Paul Miceli, Yew San Hor, Xiaoqian Zhang, Guang Bian   +15 more
wiley   +1 more source

Colossal magnetoresistance in manganites and related prototype devices [PDF]

Chinese Physics B, 2013
We review colossal magnetoresistance in single phase manganites, as related to the field sensitive spin charge interactions and phase separation; the rectifying property and negative/positive magnetoresistance in manganite/Nb:SrTiO3 pn junctions in relation to the special interface electronic structure; magnetoelectric coupling in manganite ...
Liu, Yukuai, Yin, Yuewei, Li, Xiaoguang
openaire   +2 more sources

Machine Learning‐Assisted Second‐Order Perturbation Theory for Chemical Potential Correction Toward Hubbard U Determination

Advanced Intelligent Discovery, EarlyView.
In this work, the Doubao large language model (LLM) is involved in the formula derivation processes for Hubbard U determination regarding the second‐order perturbations of the chemical potential. The core ML tool is optimized for physical domain knowledge, which is not limited to parameter prediction but rather serves as an interactive physical theory ...
Mingzi Sun, Tong Wu, Baian Chen, Zikang Li, Qiuyang Lu, Lu Lu, Hon Ho Wong, Cheuk Hei Chan, Bolong Huang   +8 more
wiley   +1 more source

Colossal Negative Magnetoresistance Effect in a La_1.37Sr_1.63Mn₂O₇ Single Crystal Grown by Laser-Diode-Heated Floating-Zone Technique

Crystals, 2020
We have grown La 1.37 Sr 1.63 Mn 2 O 7 single crystals with a laser-diode-heated floating-zone furnace and studied the crystallinity, structure, and magnetoresistance (MR) effect by in-house X-ray Laue diffraction, X-ray ...
Si Wu, Yinghao Zhu, Junchao Xia, Pengfei Zhou, Haiyong Ni, Hai-Feng Li   +5 more
doaj   +1 more source

Pressure induced superconductivity bordering a charge-density-wave state in NbTe4 with strong spinorbit coupling

, 2018
Transition-metal chalcogenides host various phases of matter, such as charge-density wave (CDW), superconductors, and topological insulators or semimetals.
An, Chao, Bai, Hua, Cao, Chao, Chen, Jian, Chen, Qian, Chen, Xuliang, Li, Yuke, Li, Yupeng, Wang, Mengmeng, Wang, Zhen, Xu, Zhu-An, Yang, Xiaojun, Yang, Zhaorong, Zhou, Yi, Zhou, Ying, Zhou, Yonghui   +15 more
core   +1 more source

Colossal Magnetoresistance in Manganites as a Multicritical Phenomenon [PDF]

Physical Review Letters, 2003
The colossal magnetoresistance in manganites AMnO_3 is studied from the viewpoint of multicritical phenomena. To understand the complicated interplay of various phases, we study the Ginzburg-Landau theory in terms of both the mean-field approximation and the renormalization-group analysis to compare with the observed phase diagram.
Murakami, Shuichi, Nagaosa, Naoto
openaire   +3 more sources

Surface Properties of CeB6 and Challenges in Surface Preparation Revealed by Scanning Tunneling Microscopy

Advanced Physics Research, EarlyView.
The investigation of the Kondo lattice system CeB6${\rm CeB}_6$ by highly surface sensitive techniques is hampered by difficulties in preparing well‐ordered, atomically flat surfaces. The richness of possible surface terminations and their impact on spectroscopic STM results are discussed.
M. Victoria Ale Crivillero, Priscila F. S. Rosa, Zachary Fisk, Ulrich K. Rößler, Steffen Wirth   +4 more
wiley   +1 more source

Negative longitudinal magnetoresistance in the density wave phase of Y$_2$Ir$_2$O$_7$

, 2018
The ground state of nanowires of single crystalline Pyrochlore Y$_2$Ir$_2$O$_7$ is a density wave. Application of a {\it transverse} magnetic field increases the threshold electric field for the collective de-pinning of the density wave state at low ...
Agarwal, Amit, Juyal, Abhishek, Mukhopadhyay, Soumik   +2 more
core   +1 more source