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

On field effect studies and superconductor-insulator transition in high-Tc cuprates

Davor Pavuna, Guy Joseph Günter Dubuis, Ivan Bozovic

We summarize previous field effect studies in high-T (c) cuprates and then discuss our method to smoothly tune the carrier concentration of a cuprate film over a wide range using an applied electric field. We synthesized epitaxial one-unit-cell thick films ...

Springer Berlin Heidelberg2013

The Interplay Between Structural and Electronic Degrees of Freedom in Superconductors

Mathieu Julien Gino Cottet

More than one hundred years after the discovery of superconductivity in Leiden, the intriguing physics of several unconventional classes of superconductors continue to fascinate and challenge scientists from all over the world. The majority of these compou ...

EPFL2013

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

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

Thermopower as a Unique Tool to Probe Quantum Phase Transitions

Stevan Arsenijevic

In my thesis, transport measurements such as resistivity and, more importantly, thermopower S, were used to explore the phase diagram of bad metals. Bad metals are electronically correlated systems whose ground state lies close to a quantum phase transitio ...

EPFL2012

ARPES Studies of Cuprate and Pnictide Superconductors

Elia Razzoli

Since the discovery of cuprate superconductors in 1986, the subject of high temperature superconductivity has triggered a lot of scientific activity. Despite enormous efforts, the origin of high-temperature superconductivity is still the subject of intense ...

EPFL2012

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

Superconductor–insulator transition in La2 − xSrxCuO4 at the pair quantum resistance

Davor Pavuna, Guy Joseph Günter Dubuis, Ivan Bozovic

High-temperature superconductivity in copper oxides arises when a parent insulator compound is doped beyond some critical concentration; what exactly happens at this superconductor–insulator transition is a key open question1. The cleanest approach is to t ...

2011

Lifshitz critical point in the cuprate superconductor YBa_{2}Cu_{3}O_{y} from high-field Hall effect measurements

Johan Juul Chang

The Hall coefficient RH of the cuprate superconductor YBa 2Cu3Oy was measured in magnetic fields up to 60 T for a hole concentration p from 0.078 to 0.152 in the underdoped regime. In fields large enough to suppress superconductivity, RH(T) is seen to go f ...

2011

Fermi-surface reconstruction by stripe order in cuprate superconductors

Johan Juul Chang

The origin of pairing in a superconductor resides in the underlying normal state. In the cuprate high-temperature superconductor YBa2Cu 3Oy (YBCO), application of a magnetic field to suppress superconductivity reveals a ground state that appears to break t ...

2011

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

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On field effect studies and superconductor-insulator transition in high-Tc cuprates

The Interplay Between Structural and Electronic Degrees of Freedom in Superconductors

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

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

Thermopower as a Unique Tool to Probe Quantum Phase Transitions

ARPES Studies of Cuprate and Pnictide Superconductors

Atomic-Layer Engineering of Oxide Superconductors

Superconductor–insulator transition in La2 − xSrxCuO4 at the pair quantum resistance

Lifshitz critical point in the cuprate superconductor YBa_{2}Cu_{3}O_{y} from high-field Hall effect measurements

Fermi-surface reconstruction by stripe order in cuprate superconductors

The Interplay Between Structural and Electronic Degrees of Freedom in Superconductors

On field effect studies and superconductor-insulator transition in high-Tc cuprates

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

Fermi-surface reconstruction by stripe order in cuprate superconductors

Superconductor–insulator transition in La2 − xSrxCuO4 at the pair quantum resistance

Lifshitz critical point in the cuprate superconductor YBa_{2}Cu_{3}O_{y} from high-field Hall effect measurements

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

Thermopower as a Unique Tool to Probe Quantum Phase Transitions

ARPES Studies of Cuprate and Pnictide Superconductors

Atomic-Layer Engineering of Oxide Superconductors