Workshops & talks
How to find us
QED group December 2012 (Photo: Mike Gal)
The QED group
The Quantum Electronic Devices group is part of the
Department in UNSW's School
of Physics in the heart of Sydney. Our research is focussed on studying
the fundamental properties of low dimensional systems realised in advanced
semiconductor devices, and developing new organic semiconductor and superconducting
- 25-29 November 2013
- The School of Physics is hosting the 2013
Gordon Godfrey Workshop on Spins and Strong Correlations.
- 18 November 2013
- Prof. Sir Michael Pepper from University College
London is visiting for 2 weeks.
- 11 November 2013
- Prof. Marco Polini, NEST, Istituto Nanoscienze-CNR,
Pisa, Italy, is visiting the group for 3 weeks.
- 17 October 2013
- Congratulations to Andrew See - his paper studying
suppression of ground state transport in a GaAs induced n-type quantum
dot has been accepted for publication in the Journal of Physics: Condensed
Matter ("A study of transport
suppression in an undoped AlGaAs/GaAs single-electron transistor"
by A. M. See, O. Klochan, A. P. Micolich, M. Aagesen, P. E. Lindelof
and A. R. Hamilton).
- 8 November 2013
- Dr. Oleh Klochan has won an ARC Discovery Early
Career Fellowship to study advanced nanostructured devices - way to
go Oleh! In addition our collaboration with researchers in Electrical
Engineering at UNSW, as well as colleagues at Monash and LaTrobe, was
awarded a $560,000 Linkage Infrastructure grant to set up a scanning
gate microscope facility.
- 8 October 2013
- Congratulations to Roy Li - his paper reporting
the first silicon hole quantum dot compatible with conventional MOS
technology has been accepted for publication in Applied Physics Letters
("Single Hole Transport
in a Silicon Metal-Oxide-Semiconductor Quantum Dot").
- 28 August 2013
- Welcome to new PhD student Elizabeth Marcellina.
- 1-5 July 2013
- Daisy, Oleh, Roy and Alex are all presenting work
at the 20th International Conference on Electronic Properties of Two-Dimensional
Systems (EP2DS-20) in the rather pretty town of Wroclaw, Poland. Alex's
talk on compressibility studies of the "0.7 anomaly" in one-dimensional
quantum wires was apparently listed as one of the conference highlights.
- 17 May 2013
- Congratulations to Daisy Wang on getting her paper
accepted into Physical Review B. Daisy has shown that you can try to
remove disorder from ultra-clean devices, but there's no such thing
as a free lunch:
Influence of surface states on quantum and transport lifetimes in
high-quality undoped heterostructures D. Q. Wang, J. C. H. Chen,
O. Klochan, K. Das Gupta, D. Reuter, A.D. Wieck, D. A. Ritchie, and
A. R. Hamilton.
- 15 May 2013
- Welcome to PhD student Shun-Tsung Lo, visiting from
Prof. Liang's group at the National Taiwan University. Shun-Tsung will
be working with Oleh Klochan for the next 7 months on transport in atomically
- 14 May 2013
- Congratulations to Oleh Klochan - his latest paper
on the Kondo effect in hole quantum dots has just been published as
a Rapid Communication in Physical Review B. The paper is a result
of a really nice collaboration Oleh has set up with theorists in Germany,
to compare experimental and theoretical finite temperature scaling of
the zero bias conductance peak. The preprint is available here:
Scaling of the Kondo zero-bias peak in a hole quantum dot at finite
temperatures, by O. Klochan, A. P. Micolich, A. R. Hamilton, D.
Reuter, A. D. Wieck, F. Reininghaus, M. Pletyukhov, H. Schoeller.
- 11 April 2013
- A collaboration between the QED group and Andrew
Dzurak's group in ANFF has demonstrated the first silicon single hole
transistor using standard CMOS technology. The paper, "Single
Hole Transport in a Silicon Metal-Oxide-Semiconductor Quantum Dot"
by Roy Li, Fay Hudson, Andrew Dzurak and Alex Hamilton is available
on the preprint archive.
- 7 April 2013
- Andrew See is off to Italy, to attend the 2013 Capri
Spring School on Transport in Nanostructures.
- 6 March 2013
- Another paper in Physical Review Letters, this time
with our collaborators in Italy. Our prediction of artificially engineered
superfluidity of electron-hole pairs in graphene samples has just been
accepted for publication. The preprint is available here: High
Temperature Superfluidity in Double Bilayer Graphene, by Andrea
Perali, David Neilson, and Alex Hamilton.
- 5 March 2013
- Congratulations to Oleh Klochan and our collaborators
in Cambridge: the paper "Ultra-shallow
quantum dots in an undoped GaAs/AlGaAs 2DEG"
by W. Y. Mak, F. Sfigakis, K. Das Gupta, O. Klochan, H. E. Beere, I.
Farrer, J. P. Griffiths, G. A. C. Jones, A. R. Hamilton, and D. A. Ritchie
has just been accepted for publication in Applied Physics Letters.
- 15 February 2013
- Welcome to new Honours student Matthew Rendell.
- 21 January 2013
- Mark Edmonds, from LaTrobe University, is visiting
the QED group once more.
- 21 December 2012
- Another paper in Nanoletters! Congratulations to
Ashwin and LaReine on the acceptance of their paper "Using a
tunable quantum wire to measure the large out-of-plane spin splitting
of quasi two-dimensional holes in a GaAs nanostructure". Just
in time for Christmas.
- 14 & 17 December 2012
- The QED group is attending a two-day workshop, CMP
at the Coogee Bay for Condensed Matter Physicists in the Sydney
region. Anyone interested is welcome to attend this relaxed, no-fee
workshop at the spectacular Coogee Bay Hotel. Registration is free.
Roy, Ashwin, Daisy, LaReine, Andrew and Oleh all gave excellent talks
at the Coogee Bay workshop - well done.
- 13 December 2012
- Daisy Wang and Alex Hamilton are giving talks at
the 2012 AIP Congress in Sydney.
- 12 December 2012
- Oleh Klochan is giving at talk on his measurements
of the Kondo effect in hole systems at the COMMAD conference in Melbourne.
- 10-14 December 2012
- Prof Barbaros Özyilmas, from the Graphene Research
Centre at the National University of Singapore, is visiting the group.
- 3 December 2012
- Alex Hamilton is awarded a UNSW Scientia Professorship,
which is UNSW's most prestigious Professorship.
- 25 November 2013
- Mark Edmonds, from LaTrobe University, is visiting
the QED group to perform low temperature experiments on hole conduction
at the surface of disingle crystal diamond. Better not lose that sample!
- 5 November 2012
- QED group and collaborators win two large infrastructure
Well done to our collaborator Dane McCamey at the University of Sydney,
who has won an $860,000 grant for a new electron spin resonance system.
- Prof Nagarajan Valanoor in the School of Materials
Science and Engineering, Prof. Hamilton in QED and collaborators at
UNSW at ISEM in Wollongong, have also won a $200,000 grant for a new
characterisation facility for advanced materials and devices.
- 26-27 July 2012
- Professor Michael Kelly FRS FReng from the
University of Cambridge is visiting the group.
- 13 July 2012
- Welcome to new Honours student Karina Hudson.
- 11 July 2012
- Congratulations to Dr. Jason Chen on the
award of his PhD.
- 4 July 2012
- Last drinks gentlemen please! Today is Jason's last
day at UNSW. He'll soon be heading off to join Professor Fujisawa's
laboratory at the Tokyo Institute of Technology as a postdoctoral researcher.
Drinks at the Rege....
- 23 May 2012
- Much as we try to eliminate disorder in quantum
devices, it is always there, and can sometimes have significant and
unexpected effects, as this latest publication, in collaboration with
the Universities of Oregon, Lund and Nottingham, shows:
the sensitivity of electron wave interference to disorder-induced scattering
in solid-state devices, B. C. Scannell, I. Pilgrim, A. M. See,
et al, Physical Review B 85, 195319 (2012)
- 13 April 2012
- Congratulations to Dr. Andrew See on the
award of his PhD. Sounds like it's time to head for Drinks at the Rege....
- 31 March 2012
- Another paper accepted for Physical Review Letters!
Andrew See, Adam Micolich and co-workers show a new route to making
incredibly stable quantum devices, and use magentoconductance fluctuations
to provide a unique fingerprint of the random disorder in the device.
Their results show for the first time that it is now possible to make
devices behave identically before and after thermal cycling to
of Small-Angle Scattering on Ballistic Transport in Quantum Dots"
Phys. Rev. Lett. 108, 196807 (2012).
- 30 Jan 2012
- Congratulations to Jason Chen and Daisy Wang - their
and characterization of ambipolar devices on an undoped AlGaAs/GaAs
heterostructure", in which they report a new way of making
quantum devices that can be switched from electrons to holes simply
by changing a gate bias, has appeared in Applied Physics Letters. A
very interesting piece of work that shows how little we know about holes.
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