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Quantum Matter group



High pressure studies of strongly correlated systems.

Development of new techniques for magnetization, susceptibility and resistivity measurements at high pressures and low temperatures using miniature anvil cells.


Key publications: 

Nearly isotropic superconductivity in the layered Weyl semimetal WTe2 at 98.5 kbar
Y. T. Chan, P .L. Alireza, K. Y. Yip, Q. Niu, K. T. Lai, and S. K. Goh. 
Phys. Rev. B 96, 180504 (2017). 

Accessing the entire overdoped regime in pristine YBa2Cu3O6+x by application of pressure
P. L. Alireza, G. H. Zhang, W. Guo, J. Porras, T. Loew, Y.-T. Hsu, G. G. Lonzarich, M. Le Tacon, B. Keimer, and Suchitra E. Sebastian. 
Phys.Rev. B 95, 100505(R) (2017)

Large Fermi Surface of Heavy Electrons at the Border of Mott Insulating State in NiS2 S. Friedemann, H. Chang, M. B. Gamza, P. Reiss,2 X. Chen, P. Alireza, W. A. Coniglio, D. Graf,5 S. Tozer, and F. M. Grosche. 
Scientific Reports, Nature 6, 25335 (2016). 

Anomalous pressure dependence of the superconducting transition temperature in TlNi2Se2-xSx
S. K. Goh, H. C. Chang, P. Reiss, P. L. Alireza, Y. W. Cheung, S. Y. Lau, Hangdong Wang, Qianhui Mao, Jinhu Yang, Minghu Fang, F. M. Grosche, and M. L. Sutherland. 
Phys. Rev. B 90, 201105(R) (2014)

Pressure- and Composition-Induced Structural Quantum Phase Transition in the Cubic Superconductor (Sr,Ca)3Ir4Sn13
Lina E. Klintberg, Swee K. Goh, Patricia L. Alireza, Paul J. Saines, David A. Tompsett, Peter W. Logg, Jinhu Yang, Bin Chen, Kazuyoshi Yoshimura and F. Malte Grosche. 
PRL 109, 237008 (2012).

Novel metallic states at low temperatures
S. E. Rowley, R. P. Smith, N. Marcano, M. P. M. Dean, A. Kusmartseva, L. J. Spalek, E.C.T. O'Farrell, D. A. Tompsett, M. L. Sutherland, P. L. Alireza, C. Ko, C. Liu, E. Pugh, S. S. Saxena, and G. G. Lonzarich.
Low Temp.Phys. 37, 1 (2011) 

Evidence of superconductivity on the border of quasi-2D ferromagnetism in Ca2RuO4 at high pressure
P. L. Alireza,F. Nakamura,S. K. Goh, Y. Maeno, S. Nakatsuji,Y. Chris Ko, M. Sutherland, S. Julian and G. G. Lonzarich.
J. Phys.: Condens. Matter 22 (2010) 052202. 

Anisotropic giant magnetoresistance near the Mott transition in pressurized Ca2RuO4
F. Nakamura, R. Nakai, T. Takemoto, M. Sakaki, . T. Suzuki, P. L. Alireza, S. Nakatsuji,Y. Maeno
Phys.Rev. B 80, 193103, (2009).

High sensitivity nuclear magnetic resonance probe for anvil cell pressure experiments
Jürgen Haase, Swee K. Goh, Thomas Meissner, Patricia L. Alireza, and Damian Rybicki
Rev.Sci.Intrum.S 80, 073905 (2009)

Miniature anvil cell for high pressure measurements in a SQUID magnetometer
Patricia L. Alireza and Gil Lonzarich
Rev. Sci.Instrum. 80, 023906 (2009)

Superconductivity up to 29 K in SrFe2As2 and BaFe2As2 at high pressures
Patricia L. Alireza, Y. T. Chris Ko, Jack Gillett, Chiara M. Petrone, Jacqui M. Cole, Suchitra E. Sebastian, and Gilbert G. Lonzarich
J. Phys: Cond. Matter, 21, 012208 (4pp) (2009)

New Approach to High-Pressure Nuclear Magnetic Resonance with Anvil Cells
T. Meissner, S. K. Goh, J. Haase, B. Meier, D. Rybicki, P.L. Alireza
Submitted to Journal of Low Temperature Physics (2009)

Unconventional resistivity at the border of metallic antiferromagnetism in NiS2
P. G. Niklowitz, P. L. Alireza, M. J. Steiner, G. G. Lonzarich, D. Braithwaite, G. Knebel, J. Flouquet, and J. A. Wilson
Physical Review B (2008)

Developments on Susceptibility and Magnetization Measurements under High Hydrostatic Pressure
Patricia Lebre Alireza, Samira Barakat, Anne-Marie Cumberlidge, Gil Lonzarich, Fumihiko Nakamura and Yoshiteru Maeno
Journal of the Physical Society of Japan, Vol 76 (2007) Suppl. A

Pressure Induced Changes in the Antiferromagnetic Superconductor YbPd2Sn
A-M. Cumberlidge, P.L. Alireza, A.F. Kusmartseva, E.E. Pearson, G.G. Lonzarich, N.R. Bernhoeft, B. Roessli

High-pressure diffraction studies on Ca2RuO4
P. Steffens, O. Friedt, P. Alireza, W. G. Marshall, W. Schmidt, F. Nakamura, S. Nakatsuji, Y. Maeno, R. Lengsdorf, M. M. Abd-Elmeguid, and M. Braden
Phy. Rev. B 72, 094104, (2005). 

High pressure investigations of the itinerant ferromagnet CoS2
S. Barakat, D. Braithwaite, Patricia L.Alireza, K.Grube and G.Lonzarich
Physica B, 3590361,(2005) 

Susceptibility measurements at high pressures using a microcoil system in an anvil cell
Patricia Lebre Alireza, Stephen Julian
Rev.Sci.Instrum.74, 4728, (2003)

From Mott insulator to ferromagnetic metal: A pressure study of Ca2RuO4
Phys. Rev. B. 65, 220402(R) (2002).

Evolution of Fermi-liquid interactions in Sr2RuO4 under pressure
Phys. Rev. Lett. 89, 166402 (2002)



Conference Proceedings


Developments on Susceptibility and Magnetization Measurements under High Hydrostatic Pressure
Patricia Lebre ALIREZA, Samira BARAKAT, Anne-Marie CUMBERLIDGE, Gil LONZARICH, Fumihiko NAKAMURA, Yoshiteru MAENO

Presented at:

ICM satellite workshop in Fukuoka (August 2006), Novel Pressure-induced Phenomena in Condensed Matter Systems




SQUID diamond anvil cell : L-A Cell. (Patent)
Patricia Lebre Alireza
UK pat # 0611353.4 (2006)

Senior Research Associate
Fellow of Lucy Cavendish College