QFS2016 Book of Abstracts

Abstracts

P1.27

Nanofluidic structures for the study of mesoscopic topological

superfluidity

Xavier Rojas(1), Andrew Casey(1), Petri J. Heikkinen P.(1), Lev V. Levitin(1),

TS Abhilash(2), Nikolay Zhelev(2), Jeevak Parpia(2), John Saunders(1)

1) Royal Holloway University of London, Department of Physics, TW20 0EX

Egham, United Kingdom

2) Department of Physics, Cornell University, Ithaca, New York 14853, USA

The confinement of liquid helium-3 into nanofluidic structures of precisely defined

geometry and surface conditions, enables the stabilization of specific phases (e.g.

superfluid

He-A,

He-B or normal Fermi liquid). This opens the way to the

sculpture of hybrid nanofluidic structures for the investigation of mesoscopic

topological superfluidity. We present some designs, which exploit the ability

to create clean junctions between phases. We propose methods for the study

of thermal transport, targeted towards a study of the proximity effect in SNS

junctions and the detection of predicted edge states in chiral superfluid

He-A.

P1.28

Self-generated oscillations of the electron density in a photo-excited

electron gas on liquid helium

Nasyedkin Kostyantyn(1), Kono Kimitoshi(1,2,3)

1) RIKEN Center for Emergent Matter Science, Wako, Saitama, Japan

2) Institute of Physics, National Chiao Tung University, Hsinchu, Taiwan

3) Institute of Physics, Kazan Federal University, Kazan, Russia

We study self-generated oscillations (SGO) of the electron density which emerge

in the photo-excited electron gas on liquid helium under the zero-resistance state

regime. We use the Corbino geometry sample cell with the outer ring electrode

divided into 4 segments and record the ac transient current from each segment

simultaneously. The cross-correlation analysis of the recorded data shows a phase

shift between the current oscillations for different segments that implies the

existence of the charge flow in an azimuthal direction. The charge flow changes

its direction when a polarity of the magnetic field is changed and coincides with

the direction of the edge magnetoplasmons propagation.