MICROKELVIN
EUROPEAN MICROKELVIN COLLABORATION
1.4. 2009 – 31.3. 2013
Professor Mikko Paalanen
Aalto University
Finland
1.8.2010
QFS2010
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MICROKELVIN
EU-funded network of 12 European
low temperature laboratories
FP7
Capacities Specific Programme
Research Infrastructures
EU Call
INFRA-2008-1.1.1 Bottom-up approach:
Integrating Activities in all scientific and technological fields
~150 applications
29 funded
1.8.2010
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MICROKELVIN
PARTICIPATING INSTITUTE
SCIENTIFIC REPRESENTATIVE
1. Aalto University
2. Centre National de la Recherche Scientifique, Grenoble
3. Lancaster University
4. Ruprecht-Karls-Universitaet Heidelberg
5. Royal Holloway and Bedford New College
6. Scuola Normale Superiore di Pisa
7. Ustav Experimentalnej Fyziky Slovenskej Akademie Vied
8. Universitaet Basel
9. Technische Universiteit Delft
10. BlueFors Cryogenics
11. Universiteit Leiden
12. Physicalisch-Technische Bundesanstalt, Berlin
1.8.2010
QFS2010
Mikko Paalanen
Henri Godfrin
George Pickett
Christian Enss
John Saunders
Francesco Giazotto
Peter Skyba
Dominik Zumbühl
Teun Klapwijk
Rob Blaauwgeers
Tjerk Oosterkamp
Thomas Schurig
3
A!
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WEB-SITE
http://www.microkelvin.eu/
1.8.2010
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European
Commission
MICROKELVIN
Management structure
General
Assembly
Advisory
Board
NA-TEAM
Coordinator
Dissemination
Committee
Project coordinating person
Management Committee
JRA-TEAM
Coordinator
NA1
Activity NA1
1.8.2010
Management Office
Project coordinating person
Administrator
Web-officer
Legal advisor
TA-TEAM
Coordinator
Selection Panel
Activity
JRA1
Activity
TA1
Activity
NA2
Activity
JRA2
Activity
TA2
Activity
NA3
Activity
JRA3
Activity
TA3
Activity
NA4
Activity
JRA4
Activity
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MICROKELVIN
Activities and budgets
TOTAL BUDGET 5 396 177,40 € (EU-funding 4 199 988,50 €)
MANAGEMENT

NA1: Managing MICROKELVIN Collaboration (Tentative budget 260 800 €)
NETWORKING ACTIVITIES (Tentative budget 779 680 €)

NA2: Coordination of transnational access

NA3: Knowledge and technology transfer

NA4: Strengthening European low temperature research
TRANSNATIONAL ACCESS ACTIVITIES (Tentative budget 1 290 897 €)

TA1: Access to TKK

TA2: Access to CNRS

TA3: Access to ULANC
JOINT RESEARCH ACTIVITIES (Tentative budget 3 064 800 €)

JRA1: Opening microkelvin regime to nanoscience

JRA2: Ultralow temperature nanorefrigerator

JRA3: Attacking fundamental physics questions by μK condensed-matter experiments

JRA4: Novel methods and devices for ultra low temperature measurements
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MICROKELVIN
TRANSNATIONAL ACCESS ACTIVITIES

MICROKELVIN will offer access to microkelvin refrigerators




Espoo, Finland
Grenoble, France
Lancaster, UK
27 visitor-months
27 visitor-months
27 visitor-months
18 users 14 projects
18 users 14 projects
18 users 14 projects
MICROKELVIN will open microkelvin regime for nanoscientists


AALTO
CNRS
ULANC
AALTO
Micronova, Finland 100 visitor-hours
5 users
5 projects
MICROKELVIN will support the users of the infrastructure



1.8.2010
Scientific support
Logistic and technical support
Outreach to new users
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MICROKELVIN
TRANSNATIONAL ACCESS ACTIVITIES

MICROKELVIN will pay
 travel and housing expences to the visitors
 per diem to the visitors to cover their other expences
 access fee to the host institute (about 9 000 €/visitor-month)

Access fee covers



1.8.2010
rent of the facility
salaries of the support personnel
consumables
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MICROKELVIN
TRANSNATIONAL ACCESS ACTIVITIES

Selection Panel


Mikko Paalanen (chair), Henri Godfrin, George Pickett, John Saunders, Peter Skyba,
Jan Kees Maan, Per Delsing, Paul Leiderer and Rudolf Gross
Selection Criteria





1.8.2010
The accepted experiments have to represent excellent science with unique goals.
They have to be technically feasible for the available instruments in our facilities.
Scientific and technical progress is expected.
Preference is given to first time users from countries lacking low temperature facility.
Special attention will be paid to new EU-countries and young starting professors.
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AALTO
Low Temperature Laboratory
EQUIPMENT OFFERED FOR ACCESS
1)
2)
3)
4)
5)
a rotating cryostat with a 300 K base temperature
a stationary cryostat with a 10 K base temperature
2 cryostat with 20 mK base temperature
2 cryostats with 20 mK base temperature, 24 hour cool down
time to 100 mK temperature, and 0-10 GHz range for high
frequency experiments
magnetometer model MPMS 5T (Quantum Design), for fast
susceptibility, magneto- and Hall resistance measurements at
1.6 - 400 K temperatures and 0 - 5 Tesla fields.
SUPPORT PERSONNEL
2 technicians working in the machine shop
1 technician delivering the cryoliquids
1 chief engineer in charge of the cryohall and the semi clean
room
1.8.2010
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CNRS GRENOBLE
Institute Néel
EQUIPMENT OFFERED FOR ACCESS
1. The ultra-low temperature dilution refrigerator and nuclear demagnetisation DN1 (100 μK),
equipped with two different nuclear stages (Lancaster-type and lamellar type)
2. The ultra-low temperature dilution refrigerator and nuclear demagnetisation DN2 (100 μK –
presently being installed - available end 2009)
3. The ultra-low temperature dilution refrigerator and nuclear demagnetisation DN3 (100 μK
available at the end of 2009 in the Canfranc underground site (LSC) for experiments
requiring good cosmic-ray shielding.
4. The high cooling power and very low temperature dilution refrigerator DR1 (T < 5 mK)
5. The very low temperature pulse-tube cooler based dilution refrigerator PT-DR3 (T < 8 mK)
6. The dilution refrigerator based 50 mK-STM facility,
7. The dilution refrigerator based 100 mK-micro-SQUID facility,
8. Access to the thermometric platform, to the low-field continuous and pulsed NMR
spectrometers, and ancillary equipment.
SUPPORT PERSONNEL
3 technicians
1 chief engineer
2 senior scientists DR1
1 scientist CR2
1.8.2010
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LANCASTER UNIVERSITY
Ultralow Temperature Laboratory
EQUIPMENT OFFERED FOR ACCESS
1.
2.
3.
Cryostat 4 cools superfluid 3He down to 100 μK
Cryostat 2 cools superfluid 3He down to < 80 μK,
copper down to 10 μK
Cryostat 5 cools superfluid 3He down to < 80 μK,
copper down to 6 μK
SUPPORT PERSONNEL
2 technicians
1 senior scientists
1.8.2010
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MICROKELVIN
Transnational Access Activities
ACCEPTED PROJECTS 30.6. 2010
TA1 Aalto:
TA2 CNRS:
TA3 Lancaster:
11 projects
4 projects
2 projects
COMPLETED PROJECTS 30.6.2010
TA1 Aalto:
TA2 CNRS:
TA3 Lancaster:
8 projects
1 project
2 projects
11.6 mo
1.3 mo
2.0 mo
http://www.microkelvin.eu/project-activities-transnational.php
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Joint Research Activity 2 (JRA2)
Ultralow temperature nanorefrigerator
AALTO, CNRS, RHUL, SNS, BASEL, DELFT
Activity leader: Professor Jukka Pekola
Objectives
1. Thermalizing and filtering electrons in nanodevices
2. To develop an electronic nano-refrigerator that is able to reach sub-10 mK
electronic temperatures
3. To develop an electronic microrefrigerator for cooling galvanically isolated
nanosamples
AALTO and CNRS:
SNS:
BASEL
DELFT and RHUL:
1.8.2010
nanorefrigeration by superconducting tunnel junctions
coolers based on semiconductors (quantum wires and dots)
very low temperature thermalization and filtering
end users of the nano-coolers
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Task 1: Thermalizing electrons in nanorefrigerators
(AALTO, CNRS, BASEL)
Ex-chip filtering:
Sintered heat exchangers in a 3He cell
Lossy coaxes/strip lines, powder filters, ...
W. Pan et al., PRL 83, 3530 (1999)
On-chip filtering:
Lithographic on-chip filtering
A. Savin et al., APL 91, 063512 2007
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Task 2: Microkelvin nanocooler
(AALTO, CNRS, SNS)
Aim is to develop sub - 10 mK electronic cooler
Normal metal – superconductor tunnel junctions-based optimized
coolers (AALTO, CNRS, DELFT)
Towards lower T:
Improved quality of tunnel junctions
Thermometry at low T?
Lower Tc superconductor
Quasiparticle relaxation studies in sc and trapping of qp:s
Quantum dot cooler (SNS)
V12
V11
V22
V13
V21
V23
GaAs
2DEG
Reservoir
Drain
VD
QD1
Source
VS
QD2
V31
V32
V33
QD3
Therm.
lead
VTh
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GaAs 2DEG
Metallic split gates
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Task 3: Development of a 100 mK, electronically-cooled platform
based on a 300 mK 3He bath
(AALTO, CNRS, RHUL, DELFT)
Commercial, robust SiN membranes (and custom made alumina) as
platforms (AALTO)
Epitaxial large area junctions (CNRS)
Optimized junctions (e-beam and mechanical masks)
RHUL and DELFT use these coolers for experiments on quantum
devices
1.8.2010
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Deliverables
Task 1
D1: Analysis of combined ex-chip and on-chip filter performance (18)
D2: Demonstration of sub-10 mK electronic bath temperature of a nanoelectronic tunnel junction device achieved by the developed filtering strategy
(30)
Task 2
D3: Analysis of sub-10 mK nano-cooling techniques including (i) traditional N-IS cooler with low Tc, (ii) quantum dot cooler (24)
D4: Demonstration of sub-10 mK nanocooling with a N-I-S junction (48)
Task 3
D5: Demonstration of 300 mK to about 50 mK cooling of a dielectric platform
(36)
D6: Demonstration of cooling-based improved sensitivity of a quantum detector
(48)
1.8.2010
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MICROKELVIN JRA2 kick-off
Ystad Sweden
June 24, 2010
List of participants:
AALTO:
SNS:
DELFT:
CNRS:
BASEL:
RHUL:
1.8.2010
Jukka Pekola, Matthias Meschke, Juha Muhonen, Simone Gasparinetti
Francesco Giazotto, Panayotis Spathis,Orlando Quaranta
Eduard Driessen, Nathan Vercruyssen
Hervé Courtois, Laetitia Pascal, Hung Nguyen
Dominik Zumbuhl
Giovanna Tancredi
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Achievements by July 2010
Task 1:
AALTO: On-chip filtering suppresses significantly leakage and dissipation in NIS junctions –
theoretical model developed and experimental demonstration performed
BASEL: Sophisticated microwave ex-chip filtering demonstrates electron temperature of 18 mK
Task 2:
SNS: Quantum dot thermometry and thermal transport measurements performed
AALTO: AlMn as a normal material tested for cooler purposes
CNRS: Electron and phonon temperatures measured separately
Task 3:
CNRS: Epitaxial large tunnel junction process under way
AALTO: Coolers on silicon nitride membranes produced, cooling power degraded in the first
experiments by poor efficiency of the cold finger
DELFT: Kinetic inductance detector fabricated and demonstrated (performance improvement by
cooling) on a platform produced by AALTO
RHUL: Tests of Josephson junctions on cooler platforms (together with AALTO)
5 or more articles on JRA2 either published, submitted or under preparation for
publication
1.8.2010
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ACKNOWLEDGEMENT
Please!
Acknowledge the support of the European
Community — Research Infrastructures under
the FP7 Capacities Specific Programme,
MICROKELVIN project number 228464.
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INDIVIDUAL PROPERTY RIGHTS

1.8.2010
All MICROKELVIN employees
must have an IPR argreement with
their host Institute!
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MICROKELVIN REPORTS AND REVIEWS

Periodic reports:
 30.11.
2010
 30. 7. 2012

Final Report
 31.5.

2013
Mid Term Review
 30.9.2011
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MICROKELVIN USERS MEETINGS

Users Meeting 1:
 15.

– 16. 10. 2010, Helsinki
Users Meeting 2:
 August
2012, Lancaster
 In connection of QFS2012?
1.8.2010
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