H – T phase diagram of PrOs 4 Sb 12
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H – T phase diagram of PrOs 4 Sb 12 Bauer, Frederick, Ho, Zapf, Maple, PRB (‘02); Maple et al., JPSJ (‘02); Ho et al., PRB (‘03) QCP QCP AFQ order • HF behavior (m* ~ 50 m e ) • Nonmagnetic ground state • Unconventional SC (multiband, TRSB, gap nodes) • HFOP: AFQ order – neutron diffraction Kohgi et al., JPSJ (‘03) • SC in vicinity of AFQ QCP?
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QCP. QCP. H – T phase diagram of PrOs 4 Sb 12. HF behavior (m* ~ 50 m e ) Nonmagnetic ground state Unconventional SC (multiband, TRSB, gap nodes) HFOP: AFQ order – neutron diffraction Kohgi et al., JPSJ (‘03) SC in vicinity of AFQ QCP ?. AFQ order. Bauer, Frederick, Ho, - PowerPoint PPT Presentation
Transcript of H – T phase diagram of PrOs 4 Sb 12
H – T phase diagram of PrOs4Sb12
Bauer, Frederick, Ho,Zapf, Maple, PRB (‘02);Maple et al., JPSJ (‘02);Ho et al., PRB (‘03)
QCP
QCP
AFQ order
• HF behavior (m* ~ 50 me)
• Nonmagnetic ground state• Unconventional SC
(multiband, TRSB, gap nodes)• HFOP: AFQ order –
neutron diffraction Kohgi et al., JPSJ (‘03)
• SC in vicinity of AFQ QCP?
• Cubic crystal structure w/ atomic cages
•G3 non-magnetic doublet g.s. in CEF
• Quadrupolar (Q) order, NFL – QKE
• PrTi2Al20: FQ order, To = 2.0 K, g ~ 0.1 J/mol-K2, m*/me ~ 16r(T) ~ T2 at low T FL ⇒SC: Tc = 0.2 K
• PrV2Al20: AFQ order, To = 0.6 K, g ~ 0.9 J/mol-K2, m*/me ~ 140r(T) ~ T1/2 at low T NFL – QKE?; ⇒SC: Tc = 0.05 K
Kondo effect and multipolar order in PrTr2Al20 (Tr = Ti, V)
A.Sakai, S. Nakatsuji, JPSJ (‘11) K. Matsubayashi et al., PRL (’12)
Kusmartseva et al., PRL 103, 236401 (2009)
1T-TiSe2
T vs P phase diagram of LnTe3 compounds
D. A. Zocco, J. J. Hamlin, M. B. Maple, UCSD; J. H. Chu, I. R. Fisher, Stanford
Sipos et al., Nature Materials 7, 960 (2008)
TaS2
