Gang Cao
Gang Cao is a Professor of physics at the University of Kentucky. He received his Ph.D. degree from Temple University, USA, in 1992 under the supervision of Dr. Jack E. Crow. Before joining the faculty of the University of Kentucky in 2002, he worked at the National High Magnetic Field Laboratory in Tallahassee, USA, initially as a Postdoctoral Researcher from 1992 to1995, and then as a Staff Scientist from 1995 to 2001. He has conducted pioneering studies of single-crystal 4d- and 5d-transition-metal oxides such as ruthenates and iridates that display novel electric and magnetic properties and complex phase diagrams resulting from competing electron-electron, spin-orbit, p-d hybridization, crystalline electric field, and electron-lattice interactions. He has also synthesized large numbers of single-crystal samples to elucidate the effects of crystal anisotropy and low dimensionality on the exotic electric and magnetic properties of 4d- and 5d-transition metal oxides. Dr. Cao has published more than 125 papers in peer-reviewed journals and organized international conferences, such as Workshop in Novel Electronic Materials in 2005 and the 2nd Workshop on Novel Electronic Materials in 2008.
Biography Updated on 14 April 2008
Personal Home Page
http://www.pa.uky.edu/bios/Cao.html
Articles in Scholarly Journals [Incomplete List]
- Observation of Strong Spin Valve Effect in Bulk Ca_{3}(Ru_{1-x}Cr_{x})_{2}O_{7}
Physical Review Letters, vol. 100, no. 1, 2008 - Partial antiferromagnetism in spin-chain
Sr_{5}Rh_{4}O_{12}
,
Ca_{5}Ir_{3}O_{12}
, and
Ca_{4}IrO_{6}
single crystals
Physical Review B, vol. 75, no. 13, 2007 - ac susceptibility studies of the weak itinerant ferromagnet
SrRuO_{3}
under high pressure to
34GPa
Physical Review B, vol. 76, no. 1, 2007 - Non-Fermi-liquid behavior in nearly ferromagnetic
SrIrO_{3}
single crystals
Physical Review B, vol. 76, no. 10, 2007 - Anomalous itinerant magnetism in single-crystal
Sr_{4}Ru_{3}O_{10}
: A thermodynamic and transport investigation
Physical Review B, vol. 75, no. 2, 2007 - Observation of oscillatory magnetoresistance periodic in 1/B and B in Ca_{3}Ru_{2}O_{7}
Physical Review B, vol. 73, no. 5, 2006 - Spectroscopic study of the field- and pressure-induced phases of the bilayered ruthenate Ca_{3}Ru_{2}O_{7}
Physical Review B, vol. 73, no. 13, 2006 - Electronic structures of layered perovskite
Sr_{2}MO_{4}
(
M=Ru
, Rh, and Ir)
Physical Review B, vol. 74, no. 11, 2006 - Highly anisotropic magnetism in Cr-doped perovskite ruthenates
Physical Review B, vol. 73, no. 21, 2006 - Borderline magnetism in Sr_{4}Ru_{3}O_{10}: Impact of La and Ca doping on itinerant ferromagnetism and metamagnetism
Physical Review B, vol. 73, no. 22, 2006 - Field- and Pressure-Induced Phases in Sr_{4}Ru_{3}O_{10}: A Spectroscopic Investigation
Physical Review Letters, vol. 96, no. 6, 2006 - Colossal Magnetoresistance by Avoiding a Ferromagnetic State in the Mott System Ca_{3}Ru_{2}O_{7}
Physical Review Letters, vol. 95, no. 1, 2005 - Itinerant ferromagnetism to insulating antiferromagnetism: A magnetic and transport study of single crystal SrRu_{1-x}Mn_{x}O_{3}(0?x<0.60)
Physical Review B, vol. 71, no. 3, 2005 - Thermal and magnetic properties of the spin-chain material Pr_{3}RuO_{7}
Physical Review B, vol. 72, no. 1, 2005 - Angle-resolved de Haas–van Alphen study of SrRuO_{3}
Physical Review B, vol. 72, no. 2, 2005 - Raman scattering studies of field-induced melting of the orbital-ordered state of CaRuO
Physica B: Condensed Matter, vol. 359-361, pp. 1234–1236, 2005 - Srn+1RunO3n+1: nature's engineered multi-layered systems
Journal of Alloys and Compounds, vol. 369, no. 1-2, pp. 2–4, 2004 - Violation of the Mott?Ioffe?Regel limit: high-temperature resistivity of itinerant magnets Srn+1RunO3n+1 (n=2,3,?) and CaRuO3
Solid State Communications, vol. 131, no. 5, pp. 331–336, 2004 - Hydrostatic pressure effects on the magnetic susceptibility of ruthenium oxide Sr3Ru2O7: evidence for pressure-enhanced antiferromagnetic instability
Solid State Communications, vol. 130, no. 5, pp. 341–346, 2004 - Specific heat of Sr4Ru3O10
Solid State Communications, vol. 130, no. 3-4, pp. 151–154, 2004 - Coexistence of dimerization and long-range magnetic order in the frustrated spin-chain system LiCu_{2}O_{2}: Inelastic light scattering study
Physical Review B, vol. 69, no. 10, 2004 - Transport and thermodynamic properties of Sr_{3}Ru_{2}O_{7} near the quantum critical point
Physical Review B, vol. 69, no. 14, 2004 - High-temperature weak ferromagnetism on the verge of a metallic state: Impact of dilute Sr doping on BaIrO_{3}
Physical Review B, vol. 69, no. 17, 2004 - Orbitally driven behaviour: Mott transition, quantum oscillations and colossal magnetoresistance in bilayered Ca3Ru2O7
New Journal of Physics, vol. 6, pp. 159–159, 2004 - Field-tuned collapse of an orbitally ordered and spin-polarized state: Colossal magnetoresistance in the bilayered ruthenate Ca_{3}Ru_{2}O_{7}
Physical Review B, vol. 69, no. 1, 2004 - Field-Induced Orbital and Magnetic Phases in Ca_{3}Ru_{2}O_{7}
Physical Review Letters, vol. 93, no. 16, 2004 - Quantum oscillations, colossal magnetoresistance, and the magnetoelastic interaction in bilayered Ca_{3}Ru_{2}O_{7}
Physical Review B, vol. 67, no. 18, 2003 - Mean-field behavior with Gaussian fluctuations at the ferromagnetic phase transition of SrRuO_{3}
Physical Review B, vol. 67, no. 10, 2003 - Competing ground states in triple-layered Sr_{4}Ru_{3}O_{10}: Verging on itinerant ferromagnetism with critical fluctuations
Physical Review B, vol. 68, no. 17, 2003 - Tunneling magnetoresistance and quantum oscillations in bilayered Ca_{3}Ru_{2}O_{7}
Physical Review B, vol. 67, no. 6, 2003 - Impact of magnetic fields on anisotropy in Ca_{3}Ru_{2}O_{7}
Physical Review B, vol. 67, no. 9, 2003 - Planar growth faults in double-layered or triple-layered (Ca,Sr)-ruthenate single crystals by the self-flux technique
Journal of Crystal Growth, vol. 252, no. 1-3, pp. 372–381, 2003 - Interplay between different degrees of freedom: unusual physical phenomena in Ca3Ru2O7
Physica C: Superconductivity, vol. 387, no. 1-2, pp. 247–255, 2003 - Magnetic interactions in (Pr, La) 3 RuO 7 and Pr 3 (Ru, Nb)O 7
Philosophical Magazine B, vol. 82, no. 13, pp. 1401–1412, 2002 - Anomalous magnetic and transport behavior in the magnetic insulator Sr_{3}Ir_{2}O_{7}
Physical Review B, vol. 66, no. 21, 2002 - Structure and magnetism of single crystal Sr_{4}Ru_{3}O_{10}: A ferromagnetic triple-layer ruthenate
Physical Review B, vol. 65, no. 21, 2002 - Dimer liquid state in the quantum antiferromagnet compound LiCu_{2}O_{2}
Physical Review B, vol. 66, no. 6, 2002 - Temperature-dependent Raman spectroscopy in BaRuO_{3} systems
Physical Review B, vol. 65, no. 23, 2002 - International Journal of Modern Physics B [Condensed Matter Physics; Statistical Physics; Applied Physics], vol. 16, no. 20 & 22, p. 3285, 2002
- International Journal of Modern Physics B [Condensed Matter Physics; Statistical Physics; Applied Physics], vol. 16, no. 20 & 22, p. 3373, 2002
- Pseudogap formation in 4
Europhysics Letters (EPL), vol. 55, no. 2, pp. 280–286, 2001 - Magnetic ordering and enhanced electronic heat capacity in insulating L_{2}RuO_{5} (L=Pr, Nd, Sm, Gd, and Tb)
Physical Review B, vol. 63, no. 14, 2001 - Superfluid and normal-fluid density in the cuprate superconductors
Ferroelectrics, vol. 249, pp. 175–184, 2001 - Weak ferromagnetism and spin-charge coupling in single-crystal Sr_{2}YRuO_{6}
Physical Review B, vol. 63, no. 18, 2001 - Thermodynamic properties of RE2RuO5 (RE=Pr, Nd, Sm, Gd and Tb)
Journal of Magnetism and Magnetic Materials, vol. 226-230, pp. 218–220, 2001 - Ferromagnetic polarons in dilute La-doped Ca2RuO4
Journal of Magnetism and Magnetic Materials, vol. 226-230, pp. 235–237, 2001 - Charge density wave formation accompanying ferromagnetic ordering in quasi-one-dimensional BaIrO3
Solid State Communications, vol. 113, no. 11, pp. 657–662, 2000 - Superfluid and normal-fluid densities in the high- superconductors
Physica C: Superconductivity, vol. 341-348, pp. 2193–2196, 2000 - Ground-state instability of the Mott insulator Ca_{2}RuO_{4}: Impact of slight La doping on the metal-insulator transition and magnetic ordering
Physical Review B, vol. 61, no. 8, pp. R5053–R5057, 2000 - Temperature dependence of the hyperfine magnetic field in SrRuO_{3} measured by the ^{99}Ru Mössbauer effect
Physical Review B, vol. 62, no. 21, pp. 14297–14300, 2000 - Spin-charge coupling for dilute La-doped Ca_{3}Ru_{2}O_{7}
Physical Review B, vol. 62, no. 2, pp. 998–1003, 2000 - Destruction of the Mott insulating ground state of Ca_{2}RuO_{4} by a structural transition
Physical Review B, vol. 60, no. 12, pp. R8422–R8425, 1999 - Raman-scattering study of the charge and spin dynamics of the layered ruthenium oxide Ca_{3}Ru_{2}O_{7}
Physical Review B, vol. 60, no. 10, pp. R6980–R6983, 1999 - Localization and transport in pseudoternary ruthenates
Physica B: Condensed Matter, vol. 259-261, no. 1-2, pp. 951–953, 1999 - Spin glass behavior in single crystals and sintered SrRuO3
Journal of Magnetism and Magnetic Materials, vol. 202, no. 1, pp. 119–122, 1999 - Itinerant to localized electron transition in ferromagnetic (Ca,?Sr)[sub 1-x]Na[sub x]RuO[sub 3]
Journal of Applied Physics, vol. 85, no. 8, p. 6223, 1999 - From antiferromagnetic insulator to ferromagnetic metal: a brief review of the layered ruthenates
Materials Science and Engineering B, vol. 63, no. 1-2, pp. 76–82, 1999 - Weak ferromagnetism, metal-to-nonmetal transition, and negative differential resistivity in single-crystal Sr_{2}IrO_{4}
Physical Review B, vol. 57, no. 18, pp. R11039–R11042, 1998 - Metamagnetism of single crystal Ca3Ru2O7 in high magnetic fields
Physica B: Condensed Matter, vol. 246-247, no. 1-4, pp. 144–148, 1998 - Negative differential resistivity in Ca3Ru2O7: Unusual transport and magnetic coupling in a near-metallic system
Solid State Communications, vol. 107, no. 6, pp. 263–266, 1998 - High field ESR study of TDAE-C60 powder at different Larmor frequencies
Solid State Communications, vol. 106, no. 11, pp. 727–732, 1998 - (Sr1$minus;xCax)3Ru2O7 system: optical and ARPES results
Journal of Physics and Chemistry of Solids, vol. 59, no. 10-12, pp. 1907–1911, 1998 - Electronic band structure of Sr_{3}Ru_{2}O_{7}
Physical Review B, vol. 58, no. 11, pp. 6671–6675, 1998 - High-Field Electron Spin Resonance of Cu_{1-x}Zn_{x}GeO_{3}
Physical Review Letters, vol. 80, no. 9, pp. 1984–1987, 1998 - Layered Ruthenium Oxides: From Band Metal to Mott Insulator
Physical Review Letters, vol. 81, no. 13, pp. 2747–2750, 1998 - Observation of a Metallic Antiferromagnetic Phase and Metal to Nonmetal Transition in Ca3Ru2O7
Physical Review Letters, vol. 78, no. 9, pp. 1751–1754, 1997 - Observation of itinerant ferromagnetism in layered Sr_{3}Ru_{2}O_{7} single crystals
Physical Review B, vol. 55, no. 2, pp. R672–R675, 1997 - Multiple magnetic phase transitions in single-crystal (Sr_{1-x}Ca_{x})_{3}Ru_{2}O_{7} for 0<~x<~1.0
Physical Review B, vol. 56, no. 9, pp. 5387–5394, 1997 - Thermal, magnetic, and transport properties of single-crystal Sr_{1-x}Ca_{x}RuO_{3} (0<~x<~1.0)
Physical Review B, vol. 56, no. 1, pp. 321–329, 1997 - Magnetic and transport properties of single-crystal Ca_{2}RuO_{4}: Relationship to superconducting Sr_{2}RuO_{4}
Physical Review B, vol. 56, no. 6, pp. R2916–R2919, 1997 - Observation of Pr magnetic order in PrBa_{2}Cu_{3}O_{7}
Physical Review B, vol. 55, no. 6, pp. R3406–R3409, 1997 - Ferromagnetism in Sr_{4}Ru_{3}O_{10}: Relationship to other layered metallic oxides
Physical Review B, vol. 56, no. 10, pp. R5740–R5743, 1997 - Thermodynamic properties of perovskite ARuO[sub 3] (A=Ca, Sr, and Ba) single crystals
Journal of Applied Physics, vol. 81, no. 8, p. 4978, 1997 - Itinerant-to-localized electron transition in perovskite CaRu[sub 1-x]Rh[sub x]O[sub 3]
Journal of Applied Physics, vol. 81, no. 8, p. 3884, 1997 - Itinerant-to-localized electron transition in CaRu_{1-x}Sn_{x}O_{3} and SrRu_{1-x}Pb_{x}O_{3}
Physical Review B, vol. 54, no. 21, pp. 15144–15148, 1996 - Magnetic properties of a high Tc superconductivity related system Y1-xPrxBa2Fe3O8
Journal of Applied Physics, vol. 79, no. 8, p. 6001, 1996 - Effects of Pr, Tb, and Zn doping into YBa2Cu3O7 on magnetoresistivity and magnetic phase boundaries
Journal of Applied Physics, vol. 79, no. 8, p. 5876, 1996 - Magnetic and transport properties of Na doped SrRuO3 and CaRuO3
Journal of Applied Physics, vol. 79, no. 8, p. 4821, 1996 - Anomalous low dimensional system: Study of magnetism and electrical conductivity in Na2Ru4O9-d
Journal of Applied Physics, vol. 79, no. 8, p. 4567, 1996 - Spectroscopic detection of the magnetic phase transition in BaPrO3
Physics Letters A, vol. 211, no. 4, pp. 242–246, 1996 - Crystal field and spectrum of Pr4+ in BaPrO3
Physics Letters A, vol. 223, no. 4, pp. 308–312, 1996 - Observation of an anomalous quasi-one-dimensional behavior in Na_{2}Ru_{4}O_{9-d} single crystals
Physical Review B, vol. 53, no. 18, pp. 12215–12219, 1996 - A simultaneous polarization and magnetic ordering in some insulating cuprate oxides
Physica B: Condensed Matter, vol. 206-207, pp. 760–763, 1995 - Anomalous magnetic properties of Tb doped YBa2Cu3O7 single crystals
Physica B: Condensed Matter, vol. 206-207, pp. 749–752, 1995 - Upper critical and irreversibility fields in selectively doped YBa2Cu3O7
Journal of Superconductivity, vol. 8, no. 5, pp. 619–620, 1995 - Evidence of unusual hybridization: Electrical resistivity and specific heat of Y_{1-x}Tb_{x}Ba_{2}Cu_{3}O_{7} single crystals
Physical Review B, vol. 52, no. 1, pp. 71–74, 1995 - Superconductivity in Tb-doped YBa2Cu3O7-d single crystals and thin films
Physica B: Condensed Matter, vol. 186-188, pp. 1022–1026, 1993 - Evidence of hole filling or hybridization in Y1-xPrxBa2Cu3O7-d and Nd1>-xCexBa2Cu3O7-d thin films
Physica B: Condensed Matter, vol. 186-188, pp. 1004–1007, 1993 - High dielectric permittivity of ceramic and single-crystal PrBa_{2}Cu_{3}O_{x}
Physical Review B, vol. 47, no. 13, pp. 8119–8123, 1993 - Enhanced electric polarizability at the magnetic ordering temperature of La_{2}CuO_{4+x}
Physical Review B, vol. 47, no. 17, pp. 11510–11511, 1993 - Antiferromagnetic ordering of BaPrO3 via neutron diffraction
Physical Review B, vol. 45, no. 2, pp. 982–986, 1992 - Magnetic ordering of the Cu spins in PrBa2Cu3O6+x
Physica C: Superconductivity, vol. 204, no. 1-2, pp. 171–178, 1992 - X-ray-absorption studies of Nd2-xCexCuO4
Physical Review B, vol. 42, no. 7, pp. 4763–4766, 1990 - Photoemission and oxygen K-edge absorption studies of Ba(Pb,Bi)O_{3}
Physical Review B, vol. 39, no. 13, pp. 9607–9610, 1989