Publications related to Gaussian fluctuations in a cuprate superconductor

Measurement of the penetration depth and coherence length of MgB2 in all directions using transmission electron microscopy

We demonstrate that images of flux vortices in a superconductor taken with a transmission electron microscope can be used to measure the penetration depth and coherence length in all directions at the same temperature and magnetic field. This is particular ...

Amer Physical Soc2015

Asymmetry of collective excitations in electron- and hole-doped cuprate superconductors

Sandrine Gerber, Thorsten Schmitt, Gang Yu

High-temperature superconductivity emerges on doping holes or electrons into antiferromagnetic copper oxides. The large energy scale of magnetic excitations, for example, compared with phonon energies, is thought to drive superconductivity with high transi ...

2014

Intrinsic Josephson junctions in the iron-based multi-band superconductor (V 2 Sr 4 O 6 )Fe 2 As 2

Philip Johannes Walter Moll

In layered superconductors, Josephson junctions may be formed within the unit cell1,2,3 as a result of sufficiently low inter-layer coupling. These intrinsic Josephson junction (iJJ) systems4 have attracted considerable interest for their application poten ...

2014

Signatures of quantum criticality in the thermopower of Ba(Fe1-xCox)(2)As-2

László Forró, Richard Gaal, Stevan Arsenijevic

We demonstrate that the thermopower (S) can be used to probe the spin fluctuations (SFs) in proximity to the quantum critical point (QCP) in Fe-based superconductors. The sensitivity of S to the entropy of charge carriers allows us to observe an increase o ...

Amer Physical Soc2013

Conventional superconductivity and hysteretic Campbell penetration depth in single crystals MgCNi3

Sergiy Katrych

Single crystals of MgCNi3, with areas sized up to 1 mm(2), were grown by the self-flux method using a cubic anvil high-pressure technique. In low applied fields, the dc magnetization exhibited a very narrow transition into the superconducting state, demons ...

Amer Physical Soc2013

Huge critical current density and tailored superconducting anisotropy in SmFeAsO0.8F0.15 by low-density columnar-defect incorporation

Janusz Andrzej Karpinski, Sergiy Katrych, Yihan Jia

Iron-based superconductors could be useful for electricity distribution and superconducting magnet applications because of their relatively high critical current densities and upper critical fields. SmFeAsO0.8F0.15 is of particular interest as it has the h ...

Nature Publishing Group2013

Critical Resistance at the Superconductor-Insulator Transition in Hole-Doped Cuprates

Davor Pavuna, Guy Joseph Günter Dubuis, Ivan Bozovic

Here, we show that in several p-type cuprates, the superconductor-to-insulator transition (SIT) occurs at the critical sheet resistance approximately equal to the quantum resistance of pairs, RQ=h/4

e^{2}

=6.5 kΩ. In a relatively broad range of temperature ...

Springer Verlag2013

Atomic-Layer Engineering of Oxide Superconductors

Davor Pavuna, Guy Joseph Günter Dubuis, Ivan Bozovic

Molecular beam epitaxy technique has enabled synthesis of atomically smooth thin films, multilayers, and superlattices of cuprates and other complex oxides. Such heterostructures show high temperature superconductivity and enable novel experiments that pro ...

2012

Electric field effect on superconductivity in $La_{2-x}$$Sr_{x}$$CuO_{4}$

Davor Pavuna, Guy Joseph Günter Dubuis, Ivan Bozovic

We demonstrate a method to tune the carrier concentration of a high temperature superconductor over a wide range, using an applied electric field. Thin film devices were made in an electrical double layer transistor configuration utilizing an ionic liquid. ...

American Institute of Physics2012

Direct observation of competition between superconductivity and charge density wave order in YBa2Cu3O6.67

Joël Mesot, Johan Juul Chang

Superconductivity often emerges in the proximity of, or in competition with, symmetry-breaking ground states such as antiferromagnetism or charge density waves(1-5) (CDW). A number of materials in the cuprate family, which includes the high transition-temp ...

Nature Publishing Group2012

Gaussian fluctuations in a cuprate superconductor

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Measurement of the penetration depth and coherence length of MgB2 in all directions using transmission electron microscopy

Asymmetry of collective excitations in electron- and hole-doped cuprate superconductors

Intrinsic Josephson junctions in the iron-based multi-band superconductor (V 2 Sr 4 O 6 )Fe 2 As 2

Signatures of quantum criticality in the thermopower of Ba(Fe1-xCox)(2)As-2

Conventional superconductivity and hysteretic Campbell penetration depth in single crystals MgCNi3

Huge critical current density and tailored superconducting anisotropy in SmFeAsO0.8F0.15 by low-density columnar-defect incorporation

Critical Resistance at the Superconductor-Insulator Transition in Hole-Doped Cuprates

Atomic-Layer Engineering of Oxide Superconductors

Electric field effect on superconductivity in $La_{2-x}$$Sr_{x}$$CuO_{4}$

Direct observation of competition between superconductivity and charge density wave order in YBa2Cu3O6.67

Asymmetry of collective excitations in electron- and hole-doped cuprate superconductors

Signatures of quantum criticality in the thermopower of Ba(Fe1-xCox)(2)As-2

Atomic-Layer Engineering of Oxide Superconductors

Direct observation of competition between superconductivity and charge density wave order in YBa2Cu3O6.67

Measurement of the penetration depth and coherence length of MgB2 in all directions using transmission electron microscopy

Intrinsic Josephson junctions in the iron-based multi-band superconductor (V 2 Sr 4 O 6 )Fe 2 As 2

Conventional superconductivity and hysteretic Campbell penetration depth in single crystals MgCNi3

Critical Resistance at the Superconductor-Insulator Transition in Hole-Doped Cuprates

Electric field effect on superconductivity in $La_{2-x}$$Sr_{x}$$CuO_{4}$

Huge critical current density and tailored superconducting anisotropy in SmFeAsO0.8F0.15 by low-density columnar-defect incorporation