Results 61 to 70 of about 66,343 (277)

Resonant Spin Excitation in an Overdoped High Temperature Superconductor

, 2001
An inelastic neutron scattering study of overdoped Bi_2Sr_2CaCu_2O_{8+\delta} $ (T_c = 83 K) has revealed a resonant spin excitation in the superconducting state.
A. A. Abrikosov, A. Abanov, A. Ivanov, A. J. Millis, A. V. Chubukov, B. Keimer, B. Liang, C. T. Lin, D. J. Scalapino, D. K. Morr, D. L. Feng, D. Munzar, D. Z. Liu, E. Demler, E. Demler, E. Demler, E. Schoenherr, F. Onufrieva, G. D. Gu, G. D. Gu, H. A. Mook, H. F. Fong, H. F. Fong, H. F. Fong, H. F. Fong, H. He, I. I. Mazin, J. Brinckmann, J. C. Campuzano, J. P. Carbotte, J. Rossat-Mignod, L. P. Regnault, L. Yin, M. R. Norman, N. Bulut, N. Koshizuka, P. Bourges, P. Bourges, P. Bourges, P. Dai, S. Chakravarty, S. H. Han, S. Sachdev, Y. Sidis, Y. Sidis, Z. X. Shen   +45 more
core   +3 more sources

Role of Liquid Composition in the Transient Liquid Assisted Growth of Superconducting YBa2Cu3O7‐δ Films

Advanced Materials, EarlyView.
The Y supersaturation in the [Ba‐Cu(I/II)‐O] transient liquid composition is the driving force toward YBCO nucleation and growth in TLAG. Tuning the initial (Ba:Cu) molar ratio in the ink composition determines the YBCO epitaxial nucleation through supersaturation control.
Lavinia Saltarelli, Diana García, Laia Soler, Elzbieta Pach, Kapil Gupta, Daniel Sanchez‐Rodriguez, Jordi Aguilar, Víctor Fuentes, Eduardo Solano, Cristian Mocuta, Jordi Farjas, Xavier Obradors, Teresa Puig   +12 more
wiley   +1 more source

Superfluid Inhomogeneity and Microwave Absorption in Model High-T_c Superconductors

, 2002
We investigate the microwave absorption arising from inhomogeneity in the superfluid density of a model high-T_c superconductor. Such inhomogeneities may arise from a wide variety of sources, including quenched random disorder and static charge density ...
Annett, Barabash, Barabash, Bergman, Bruggeman, Carlson, Corson, Corson, David Stroud, Hardy, Kaminski, Landauer, Lee, Sergey V. Barabash, Stroud, Valla, Wu   +16 more
core   +1 more source

Photon assisted tunneling as an origin of the Dynes density of states [PDF]

, 2010
We show that the effect of a high-temperature environment in current transport through a normal metal-insulator-superconductor tunnel junction can be described by an effective density of states (DOS) in the superconductor. In the limit of a resistive low-
Chekurov, N., Kafanov, S., Kemppinen, A., Maisi, V. F., Mottonen, M., Pashkin, Yu. A., Pekola, J. P., Saira, O. -P., Tsai, J. S.   +8 more
core   +2 more sources

Vortex Nanoliquid in High-Temperature Superconductors [PDF]

Physical Review Letters, 2004
Using a differential magneto-optical technique to visualize flow of transport currents, we reveal a new delocalization line within the reversible vortex liquid region in the presence of a low density of columnar defects. This line separates a homogeneous vortex liquid, in which all the vortices are delocalized, from a heterogeneous "nanoliquid" phase ...
Banerjee, S. S., Goldberg, S., Soibel, A., Myasoedov, Y., Rappaport, M., Zeldov, E., de la Cruz, F., van der Beek, C. J., Konczykowski, M., Tamegai, T., Vinokur, V. M.   +10 more
openaire   +3 more sources

Self‐Cooling Molecular Spin Qudits

Advanced Materials, EarlyView.
A material made of [GdEr] molecular dimers can encode a qudit and perform as a magnetic refrigerant. Microwave resonant pulses coherently manipulate its 16 spin states, while direct demagnetization measurements cool the material and a device down to temperatures below 1 K.
Elías Palacios, David Aguilà, David Gracia, Diamatoula Maniaki, Leoní A. Barrios, Alessandro Chiesa, Jesús I. Martínez, Valentin Novikov, Olivier Roubeau, Stefano Carretta, Marco Evangelisti, Guillem Aromí, Fernando Luis   +12 more
wiley   +1 more source

Anomalous density of states in a metallic film in proximity with a superconductor

, 2003
We investigated the local electronic density of states in superconductor-normal metal (Nb-Au) bilayers using a very low temperature (60 mK) STM. High resolution tunneling spectra measured on the normal metal (Au) surface show a clear proximity effect ...
A. K. Gupta, A.A. Golubov, A.D. Truscott, B. Pannetier, B. Pannetier, H. Courtois, J.A. Melsen, K. Fuchs, K. Halterman, L. Crétinon, M. Vinet, M.P. Everson, N. Moussy, N. Moussy, N. Moussy, N.A. Mortensen, P.M. Ostrovsky, S. Guéron, S. Pilgram, W. Belzig   +19 more
core   +1 more source

Collective modes in high-temperature superconductors [PDF]

Physical Review B, 1998
The role of collective modes in various experiments on the cuprates is investigated. We calculate the neutron scattering, photoemission (ARPES), and Raman scattering intensities below $T_c$ within the fluctuation-exchange (FLEX) approximation for the two-dimensional Hubbard model.
Dahm, Thomas, Manske, D, Tewordt, L
openaire   +4 more sources

Solvent‐Free Thermal Defect Engineering in Molecular Frameworks With Volatile Linkers

Advanced Materials, EarlyView.
Thermal removal of neutral volatile linkers enables precise and solvent‐free generation of metal vacancies in MOFs. This strategy affords redox‐stable, coordinatively unsaturated FeII sites with tunable spin, ligand coordination, and catalytic behavior. The approach offers a general route to design defect‐functional materials through local coordination
Sonia Martínez‐Giménez, Alejandro Orellana‐Silla, Marta Galbiati, Efrén Navarro‐Moratalla, Luca Braglia, Sara Stolfi, José Antonio Real, Víctor Rubio‐Giménez, Sergio Tatay, Carlos Martí‐Gastaldo   +9 more
wiley   +1 more source

Universal Conductance Fluctuations in Quantum Anomalous Hall Insulators

Advanced Materials, EarlyView.
Universal conductance fluctuations are observed in mesoscopic quantum anomalous Hall insulators. Two distinct fluctuation patterns are identified, arising from different interference processes of bulk and chiral edge states, respectively. These findings unveil rich quantum interference phenomena in quantum anomalous Hall insulators and provide insights
Peng Deng, Peng Zhang, Gang Qiu, Ting‐Hsun Yang, Chang Niu, Yaochen Li, Wenqiang Cui, Yang Feng, Peide D. Ye, Ke He, Kai Chang, Kang L. Wang   +11 more
wiley   +1 more source