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Physics

Condensed matter

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Displaying 676 - 700 of 2293

Symmetry-based crystal structure enumeration in two dimensions

March 16, 2020
Author(s)
Evan Pretti, Vincent K. Shen, Jeetain Mittal, Nathan Mahynski
The accurate prediction of stable crystalline phases is a long-standing problem encountered in the study of conventional atomic and molecular solids as well as soft materials. One possible solution involves enumerating a reasonable set of candidate

Twist Angle-Dependent Atomic Reconstruction and Moire Patterns in Transition Metal Dichalcogenide Heterostructures

March 13, 2020
Author(s)
Matthew R. Rosenberger, Hsun-Jen Chuang, Vladimir Oleshko, Madeleine Phillips, Kathleen M. McCreary, Saujan V. Sivaram, C. Stephen Hellberg, Berend T. Jonker
Van der Waals layered materials, such as the transition metal dichalcogenides (TMDs), are an exciting class of materials with weak interlayer bonding which enables one to create so-called van der Waals heterostructures (vdWH). One promising attribute of

Long-Range Magnetic Order in Hydroxide-Layer-Doped (Li 1-x-y Fe x Mn y OD)FeSe

March 11, 2020
Author(s)
Brandon Wilfong, Xiuquan Zhou, Huafei Zheng, Navneeth Babra, Craig Brown, Jeffrey W. Lynn, Keith M. Taddei, Johnpierre Paglione, Efrain E. Rodriguez
The (Li 1-xFe xOH)FeSe superconductor has been suspected to exhibit long-range magnetic ordering due to Fe substitution in the LiOH layer. However, no direct observation such as magnetic reflection from neutron diffraction has be reported. Here, we use a

Observation of a C-type Short-Range Antiferromagnetic Order in Lyaer Spacing Expanded FeS

March 9, 2020
Author(s)
Meng Wang, Ming Yi, Benjamin A. Frandsen, Junjie Yin, Hualei Sun, Zhijun Xu, Huibo Cao, Edith Bourret-Courchesne, Jeffrey W. Lynn, Robert J. Birgeneau
We report neutron diffraction studies of FeS single crystals obtained from Rb xFe 2-yS 2 single crystals via a hydrothermal method. While no √5 x √5 iron vacancy order or block antiferromagnetic order typical of RRb xFe 2-yS 2 is found in our samples, we

Targeted enrichment of 28Si thin films for quantum computing

March 9, 2020
Author(s)
Ke Tang, Hyun S. Kim, Aruna N. Ramanayaka, David S. Simons, Joshua M. Pomeroy
We report on the growth of isotopically enriched 28Si epitaxial films with precisely controlled enrichment levels, ranging from natural abundance ratio of 92.2% all the way to 99.99987 % (0.832 × 10-6 mol/mol 29Si). Isotopically enriched 28Si is regarded

Optical evidence of the chiral magnetic anomaly in the Weyl semimetal TaAs

March 4, 2020
Author(s)
Antonio L. Levy, Andrei Sushkov, Fengguang Liu, Bing Shen, Ni Ni, Howard D. Drew, Gregory Jenkins
Chiral pumping from optical electric fields oscillating at THz frequencies is observed in the Weyl material TaAs with electric and magnetic fields aligned along both the a- and c-axes. Free carrier spectral weight enhancement is measured directly for the

Nd Ordering, Cluster Formation, and the Origin of Negative Magnetization in NdMn 0l8 Fe 0.2 O 3=d

March 1, 2020
Author(s)
D. M. Pajerowski, Jr. C. A. Escanhoela, D. Haskel, Timothy R Prisk, M. D. Frontzek, D. Phelan, Jr. Mihalik, M. Mihalik
The orthorhombic pseudo-perovskite series NdMn 1-xFe xO 3+δ has negative magnetization, i.e. magnetization directed opposite to an applied field under certain conditions, for x = 0.3 and x=0.25. We have investigated the microscopic origin of this

Sixfold Enhancement of Superconductivity in a Tunable Electronic Nematic System

March 1, 2020
Author(s)
Christoper Eckberg, Daniel J. Campbell, Tristin Metz, John Collini, Halyna Hodovanets, Tyler Drye, Peter Zavalij, Morten H. Christensen, Rafael M. Fernandes, Sangjun Lee, Peter Abbamonte, Jeffrey W. Lynn, Johnpierre Paglione
The electronic nematic phase, wherein electronic degrees of freedom lower the crystal rotational symmetry, is a common motif across a number of high-temperature superconductors. However, understanding the role and influence of nematicity and nematic
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