Showing 2016 · cond-mat.mtrl-sciShow all

26 papers · 2 filters

cond-mat.mtrl-sci2016★ 51 cited

Insight into dielectric response of ferroelectric relaxors by statistical modeling

J. Liu, F. Li, Y. Zeng +4

Ferroelectric relaxors are complex materials with distinct properties. The understanding of their dielectric susceptibility, which strongly depends on both temperature and probing…

cond-mat.mtrl-sci2016★ 7 cited

π-Conjugation in Epitaxial Si(111)-() Surface: an Unconventional "Bamboo Hat" Bonding Geometry for Si

Wei Jiang, Zheng Liu, Miao Zhou +2

The newly observed () surface reconstruction in heteroepitaxial Si(111) thin films on metal substrates is widely considered as a promising platform to reali…

cond-mat.mtrl-sci2016★ 17 cited

ARPES study of the epitaxially grown topological crystalline insulator SnTe(111)

Yi Zhang, Zhongkai Liu, Bo Zhou +8

SnTe is a prototypical topological crystalline insulator, in which the gapless surface state is protected by a crystal symmetry. The hallmark of the topological properties in SnTe…

cond-mat.mtrl-sci2016★ 26 cited

Electronic properties of SnTe-class topological crystalline insulator materials

Jianfeng Wang, Na Wang, Huaqing Huang +1

The rise of topological insulators in recent years has broken new ground both in the conceptual cognition of condensed matter physics and the promising revolution of the electronic…

cond-mat.mtrl-sci2016★ 465 cited

Lorentz-violating type-II Dirac fermions in transition metal dichalcogenide PtTe

Mingzhe Yan, Huaqing Huang, Kenan Zhang +13

Topological semimetals have recently attracted extensive research interests as host materials to condensed matter physics counterparts of Dirac and Weyl fermions originally propose…

cond-mat.mtrl-sci2016★ 26 cited

Shear piezoelectricity in poly(vinylidenefluoride-co-trifluoroethylene): full piezotensor coefficients by molecular modeling, biaxial transverse response, and use in suspended energy-harvesting nanostructures

Luana Persano, Alessandra Catellani, Canan Dagdeviren +5

The intrinsic flexible character of polymeric materials also causes remarkable strain deformations along directions perpendicular to the applied stress. Here the biaxial response i…

cond-mat.mtrl-sci2016★ 30 cited

Thermoelectric Effects and Topological Insulators

Yong Xu

The recent discovery of topological insulator (TI) offers new opportunities for the development of thermoelectrics, because many TIs (like BiTe) are excellent thermoelectri…

cond-mat.mtrl-sci2016★ 48 cited

Insulating phase at low temperature in ultrathin La0.8Sr0.2MnO3 films

Yaqing Feng, Kui-juan Jin, Lin Gu +9

Metal-insulator transition is observed in the La0.8Sr0.2MnO3 thin films with thickness larger than 5 unit cells. Insulating phase at lower temperature appeared in the ultrathin fil…

cond-mat.mtrl-sci2016★ 288 cited

Type-II Dirac fermions in the PtSe class of transition metal dichalcogenides

Huaqing Huang, Shuyun Zhou, Wenhui Duan

Recently, a new "type-II" Weyl fermion, which exhibits exotic phenomena such as angle-dependent chiral anomaly, was discovered in a new phase of matter where electron and hole pock…

cond-mat.mtrl-sci2016★ 165 cited

Raman signatures of inversion symmetry breaking and structural phase transition in type-II Weyl semimetal MoTe2

Kenan Zhang, Changhua Bao, Qiangqiang Gu +7

Transition metal dichalcogenide MoTe is an important candidate for realizing the newly predicted type-IIWeyl fermions, for which the breaking of the inversion symmetry is a pre…

cond-mat.mtrl-sci2016★ 236 cited

Topological nodal-line semimetals in alkaline-earth stannides, germanides and silicides

Huaqing Huang, Jianpeng Liu, David Vanderbilt +1

Based on first-principles calculations and an effective Hamiltonian analysis, we systematically investigate the electronic and topological properties of alkaline-earth compounds $A…

cond-mat.mtrl-sci2016

Defect energetics and magnetic properties of 3d-transition-metal-doped topological crystalline insulator SnTe

Wang Na, Wang Jianfeng, Si Chen +2

The introduction of magnetism in SnTe-class topological crystalline insulators is a challenging subject with great importance in the quantum device applications. Based on the first…

cond-mat.mtrl-sci2016★ 27 cited

Faceted interfaces: a key feature to quantitative understanding of transformation morphology

W. -Z. Zhang, X. -F. Gu, F. -Z. Dai

Faceted interfaces are a key feature in self-resembling morphologies of many microstructures generated from solid state phase transformations. Interpretations, predictions and simu…

cond-mat.mtrl-sci2016★ 156 cited

Direct experimental evidence of pi magnetism of a single atomic vacancy in graphene

Yu Zhang, Si-Yu Li, Wen-Tian Li +4

The pristine graphene is strongly diamagnetic. However, graphene with single carbon atom defects could exhibit paramagnetism with local magnetic moments ~ 1.5 per vacancy1-6. Theor…

cond-mat.mtrl-sci2016★ 458 cited

Observation of the Type-II Weyl Semimetal Phase in MoTe2

J. Jiang, Z. K. Liu, Y. Sun +15

Topological Weyl semimetal (TWS), a new state of quantum matter, has sparked enormous research interest recently. Possessing unique Weyl fermions in the bulk and Fermi arcs on the…

cond-mat.mtrl-sci2016★ 120 cited

Quantification of surface displacements and electromechanical phenomena via dynamic atomic force microscopy

Nina Balke, Stephen Jesse, Pu Yu +3

Detection of dynamic surface displacements associated with local changes in material strain provides access to a number of phenomena and material properties. Contact resonance-enha…

cond-mat.mtrl-sci2016★ 36 cited

Dirac semimetal phase in the hexagonal LiZnBi

Wendong Cao, Peizhe Tang, Yong Xu +3

Based on first-principles calculations, we find that LiZnBi, a metallic hexagonal compound, can be driven into a Dirac semimetal with a pair of Dirac points by strain. The no…

cond-mat.mtrl-sci2016★ 2 cited

Fabricating Highly Ordered Nanofiber Assemblies by Controlled Shear Flow and Solvent Evaporation

Enlai Gao, Chuanhua Duan, Zhiping Xu

Fabrication of highly ordered and dense nanofibers assemblies is of key importance in designing high-performance and multi-functional materials. In this work, we design an experime…

cond-mat.mtrl-sci2016★ 353 cited

Oxygen vacancies: The origin of n-type conductivity in ZnO

Lishu Liu, Zengxia Mei, Aihua Tang +4

Oxygen vacancy (VO) is a common native point defects that plays crucial roles in determining the physical and chemical properties of metal oxides such as ZnO. However, fundamental…

cond-mat.mtrl-sci2016★ 225 cited

Second generation Dirac cones and inversion symmetry breaking induced gaps in graphene/hexagonal boron nitride

Eryin Wang, Xiaobo Lu, Shijie Ding +12

Graphene/h-BN has emerged as a model van der Waals heterostructure, and the band structure engineering by the superlattice potential has led to various novel quantum phenomena incl…

cond-mat.mtrl-sci2016★ 13 cited

Interference Evidence for Rashba-Type Spin-Split on Semimetallic WTe2 Surface

Qing Li, Jiaqiang Yan, Biao Yang +11

Semimetallic tungsten ditelluride (WTe2) displays an extremely large non-saturating magnetoresistance (XMR), which is the subject of intense interest. This phenomenon is thought to…

cond-mat.mtrl-sci2016★ 160 cited

Observation of Unusual Topological Surface States in Half-Heusler Compounds LnPtBi (Ln=Lu, Y)

Zhongkai Liu, Lexian Yang, Shu-Chun Wu +9

Topological quantum materials represent a new class of matter with both exotic physical phenomena and novel application potentials. Many Heusler compounds, which exhibit rich emerg…

cond-mat.mtrl-sci2016★ 197 cited

Robust topological edge states at the perfect surface step edge of topological insulator ZrTe

Xiang-Bing Li, Wen-Kai Huang, Yang-Yang Lv +13

We report an atomic-scale characterization of ZrTe by using scanning tunneling microscopy. We observe a bulk bandgap of ~80 meV with topological edge states at the step edge, a…

cond-mat.mtrl-sci2016★ 18 cited

Stable Dirac semi-metal in the allotrope of IV elements

Wendong Cao, Peizhe Tang, Shou-Cheng Zhang +2

Three dimensional topological Dirac semi-metals represent a novel state of quantum matter with exotic electronic properties, in which a pair of Dirac points with the linear dispers…