Appearance of "fragile" fermi liquids in finite-width mott insulators sandwiched between metallic leads

Physical Review Letters

Volumn 103, Issue 11, 2009, Pages

  Zenia, H ^a   Freericks, J K ^a   Krishnamurthy, H R ^a,b,c   Pruschke, Th ^d  

^a GEORGETOWN UNIVERSITY   (United States)

^b INDIAN INSTITUTE OF SCIENCE   (India)

^c JAWAHARLAL NEHRU CENTRE FOR ADVANCED SCIENTIFIC RESEARCH   (India)

^d UNIVERSITY OF GÖTTINGEN   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

DYNAMICAL MEAN-FIELD THEORY; FINITE NUMBER; LATTICE PERIODICITY; METALLIC LEADS; MOTT INSULATORS; NON-LINEAR RESPONSE; PROXIMITY EFFECTS; QUANTUM TUNNELING; SEMI-INFINITE; ZERO FREQUENCY;

FERMI LIQUIDS; LIQUIDS; MEAN FIELD THEORY; RESTORATION;

FERMIONS;

EID: 70249121996     PISSN: 00319007     EISSN: 10797114     Source Type: Journal    
DOI: 10.1103/PhysRevLett.103.116402     Document Type: Article

References (10)

1. A. Ohtomo and H.Y. Hwang, Nature (London) 427, 423 (2004). NATUAS 0028-0836 10.1038/nature02308 (Pubitemid 38168490)
2. S. Thiel, Science 313, 1942 (2006). SCIEAS 0036-8075 10.1126/science. 1131091 (Pubitemid 44497997)
3. R.W. Helmes, T.A. Costi, and A. Rosch, Phys. Rev. Lett. 101, 066802 (2008). PRLTAO 0031-9007 10.1103/PhysRevLett.101.066802
4. M. Potthoff and W. Nolting, Phys. Rev. B PRBMDO 0163-1829 59, 2549 (1999). 10.1103/PhysRevB.59.2549
5. J.K. Freericks, Phys. Rev. B PRBMDO 0163-1829 70, 195342 (2004). 10.1103/PhysRevB.70.195342 (Pubitemid 40139548)
6. J.K. Freericks, Transport in Multilayered Nanostructures: the Dynamical Mean-field Theory Approach (Imperial College Press, London, 2006).
7. A. Georges, Rev. Mod. Phys. 68, 13 (1996). RMPHAT 0034-6861 10.1103/RevModPhys.68.13
8. D.O. Demchenko, A.V. Joura, and J.K. Freericks, Phys. Rev. Lett. 92, 216401 (2004). PRLTAO 0031-9007 10.1103/PhysRevLett.92.216401
9. R. Bulla, T.A. Costi, and Th. Pruschke, Rev. Mod. Phys. 80, 395 (2008), and references therein. RMPHAT 0034-6861 10.1103/RevModPhys.80.395
10. The one-dimensional analog of the N=1 case considered above corresponds to a tight-binding chain with a nonzero U only at one central site (the Wolff model). H.R. Krishnamurthy, K.G. Wilson, and J.W. Wilkins, Phys. Rev. B PRBMDO 0163-1829 21, 1003 (1980) show it is in the universality class of the Anderson impurity model. At T=0, it has a Kondo resonance (local Fermi liquid), no matter how large U is, which again translates into ballistic dc conductance. 10.1103/PhysRevB.21.1003