Zobrazeno 1 - 10
of 131
pro vyhledávání: '"LONG, L. E."'
Autor:
Chen, X. M., Farmer, B., Woods, J. S., Dhuey, S., Hu, W., Mazzoli, C., Wilkins, S. B., Robinson, I. K., De Long, L. E., Roy, S., Hastings, J. T.
Publikováno v:
Phys. Rev. Lett. 123, 197202 (2019)
Collective dynamics often play an important role in determining the stability of ground states for both naturally occurring materials and metamaterials. We studied the temperature dependent dynamics of antiferromagnetically ordered superdomains in a
Externí odkaz:
http://arxiv.org/abs/1809.05656
Publikováno v:
Physical Review Letters 120, 017201 (2018)
Electrical control of structural and physical properties is a long-sought, but elusive goal of contemporary science and technology. We demonstrate that a combination of strong spin-orbit interactions (SOI) and a canted antiferromagnetic (AFM) Mott st
Externí odkaz:
http://arxiv.org/abs/1711.10021
Autor:
Lee, J. C. T, Mishra, S. K., Bhat, V. S., Streubel, R., Farmer, B., Shi, X., De Long, L. E., McNulty, I., Fischer, P., Kevan, S. D., Roy, S.
Publikováno v:
Phys. Rev. B 99, 024406 (2019)
We report evidence of spontaneous formation of a heterogeneous network of superdomains in two-dimensional square artificial spin ice nanostructures in externally applied magnetic fields. The magnetic heterogeneity is locally disordered but has a zig-
Externí odkaz:
http://arxiv.org/abs/1711.00182
Autor:
Lee, J. C. T, Mishra, S. K., Bhat, V. S., Streubel, R., Farmer, B., Shi, X., De Long, L. E., McNulty, I., Fischer, P., Kevan, S. D., Roy, S.
We report direct evidence that magnetically charged superdomain walls form spontaneously in two dimensional square artificial spin ice nanostructures in response to external magnetic fields. These extended magnetic defects were revealed by the develo
Externí odkaz:
http://arxiv.org/abs/1609.07828
Autor:
Bhat, V. S., Balk, A., Farmer, B., Teipel, E., Smith, N., Unguris, J., Hastings, J. T., De Long, L. E.
We have imaged magnetization textures of permalloy films patterned into Penrose P2 tilings (P2T) using scanning electron microscopy with polarization analysis (SEMPA). P2T film segments have near-uniform, bipolar magnetization, similar to artificial
Externí odkaz:
http://arxiv.org/abs/1501.02760
Autor:
Nichols, J., Korneta, O. B., Terzic, J., De Long, L. E., Cao, G., Brill, J. W., Seo, S. S. A.
Publikováno v:
Appl. Phys. Lett. 103, 131910 (2013)
We have investigated the transport and optical properties along the c-axis of a-axis-oriented Sr2IrO4 epitaxial thin-films grown on LaSrGaO4 (100) substrates. The c-axis resistivity is approximately one order of magnitude larger than that of the ab-p
Externí odkaz:
http://arxiv.org/abs/1308.4221
Autor:
Nichols, J., Terzic, J., Bittle, E. G., Korneta, O. B., De Long, L. E., Brill, J. W., Cao, G., Seo, S. S. A.
Publikováno v:
Appl. Phys. Lett. 102, 141908 (2013)
We have synthesized epitaxial Sr2IrO4 thin-films on various substrates and studied their electronic structures as a function of lattice-strains. Under tensile (compressive) strains, increased (decreased) Ir-O-Ir bond-angles are expected to result in
Externí odkaz:
http://arxiv.org/abs/1302.0918
Ca2RuO4 undergoes a metal-insulator transition at TMI = 357 K, followed by a well-separated transition to antiferromagnetic order at TN = 110 K. Dilute Cr doping for Ru reduces the temperature of the orthorhombic distortion at TMI and induces ferroma
Externí odkaz:
http://arxiv.org/abs/1009.6177
Recently developed techniques to find the eigenmodes of a ferromagnetic particle of arbitrary shape, as well as the absorption in the presence of an inhomogeneous radio-frequency field, are extended to treat infinite lattices of such particles. The m
Externí odkaz:
http://arxiv.org/abs/cond-mat/0703273
Although most known non-Fermi liquid (NFL) materials are structurally or chemically disordered, the role of this disorder remains unclear. In particular, very few systems have been discovered that may be stoichiometric and well ordered. To test wheth
Externí odkaz:
http://arxiv.org/abs/cond-mat/0402004