Observation of an antiferromagnetic quantum critical point in high-purity LaNiO3

Autor: Changjiang Liu, Vincent F. C. Humbert, Terence M. Bretz-Sullivan, Gensheng Wang, Deshun Hong, Friederike Wrobel, Jianjie Zhang, Jason D. Hoffman, John E. Pearson, J. Samuel Jiang, Clarence Chang, Alexey Suslov, Nadya Mason, M. R. Norman, Anand Bhattacharya

Publikováno v: Nature Communications, Vol 11, Iss 1, Pp 1-7 (2020)

LaNiO3 is a strange metal, for reasons that are not well understood. Here, Liu et al. report evidence for scattering of charge carriers by antiferromagnetic quantum fluctuations in high-purity epitaxial thin films of LaNiO3, suggesting it is close to

Externí odkaz: https://doaj.org/article/0a6ff6dc225e46d79e97268f6c8dfaf8

Electric field control of magnon spin currents in an antiferromagnetic insulator

Autor: Yi Li, Hua Zhou, John E. Pearson, Changjiang Liu, Brandon Fisher, Yongming Luo, Hilal Saglam, J. Samuel Jiang, Steven S.-L. Zhang, Jianguo Wen, Yulin Lin, Deshun Hong, Anand Bhattacharya, Axel Hoffmann

Publikováno v: Science Advances

Description
Applying heat to a magnetoelectric antiferromagnet enables an electric field control of magnon spin currents.
Pure spin currents can be generated via thermal excitations of magnons. These magnon spin currents serve as carriers o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e8b69c66cb402ba2a82854b98404d0ba
https://doi.org/10.1126/sciadv.abg1669

Probing short-range magnetic order in a geometrically frustrated magnet by means of the spin Seebeck effect

Autor: J. Samuel Jiang, John E. Pearson, Changjiang Liu, Anand Bhattacharya, Stephen Wu, N. d’Ambrumenil

Publikováno v: Physical Review B. 98

The spin Seebeck effect (SSE) is a phenomenon where a spin current is generated from thermal excitations in magnetic materials. It is believed that magnetic long-range order (LRO) is not required for SSE, while short-ranged order (SRO) plays an impor

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::442bb956281823be27470b4d2afc4ae7
https://doi.org/10.1103/physrevb.98.060415

Antiferromagnetic Spin Seebeck Effect

Autor: Amit Kc, Axel Hoffmann, Pavel Borisov, Stephen Wu, J. Samuel Jiang, Anand Bhattacharya, Wei Zhang, David Lederman, John E. Pearson

Publikováno v: Wu, SM; Zhang, W; Kc, A; Borisov, P; Pearson, JE; Jiang, JS; et al.(2016). Antiferromagnetic Spin Seebeck Effect. Physical Review Letters, 116(9), 097204. doi: 10.1103/PhysRevLett.116.097204. UC Santa Cruz: Retrieved from: http://www.escholarship.org/uc/item/2d0617gw
Physical review letters, vol 116, iss 9

We report on the observation of the spin Seebeck effect in antiferromagnetic MnF_{2}. A device scale on-chip heater is deposited on a bilayer of MnF_{2} (110) (30 nm)/Pt (4nm) grown by molecular beam epitaxy on a MgF_{2} (110) substrate. Using Pt as

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f2a29346833b5e218a1f1a88e03c8bc7
http://www.escholarship.org/uc/item/2d0617gw

Effect of Ligand−Metal Interactions on the Growth of Transition-Metal and Alloy Nanoparticles

Autor: J. Samuel Jiang, S. D. Bader, John A. Schlueter, Xiao-Min Lin, § and Chang-Jin Qin, Anna Cristina S. Samia

Publikováno v: Chemistry of Materials. 18:5203-5212

The growth of cobalt, iron, and platinum and their alloy nanoparticles was investigated with oleic acid and trioctylphosphine oxide as ligands. Both the ligand type and concentration are important in determining the final product of the reactions. Wi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::52b8f6d12abfa758d5ceb2102c61f11c
https://doi.org/10.1021/cm0610579