Complex States, Emergent Phenomena & Superconductivity in Intermetallic & Metal-like Compounds
Kyuil Cho, Abhishek Pandey
The specific scientific question to be addressed by this Project is—can we develop, discover, understand and ultimately control, and predictably modify new and extreme examples of complex states, emergent phenomena, and superconductivity? Materials manifesting clear or compelling examples (or combinations) of superconductivity, strongly correlated electrons, quantum criticality, and exotic, bulk magnetism are of particular interest given their potential to lead to revolutionary steps forward in our understanding of their complex, and potentially energy relevant, properties. Experiment and theory are implemented synergistically. The experimental work consists of new materials development and crystal growth, combined with detailed and advanced measurements of microscopic, thermodynamic, and transport properties, as well as electronic structure, at extremes of pressure, temperature, magnetic field and resolution. The theoretical work focuses on modeling transport, thermodynamic and spectroscopic properties using world-leading, phenomenological approaches to superconductors and modern quantum many-body theory.
The ability to address these questions is illustrated by this group’s past work on many of the key systems and phenomena that have defined this field over the past decades: High Tc oxide, RNi2B2C and MgB2 superconductivity, Ce-, Yb- and transition metal-based heavy fermions, quantum criticality, quasicrystals, spin glasses, spin ladders / spin chains, vortex and domain pattern formation, ferromagnetism and metamagnetism.
- Design and growth (P. C. Canfield, S. Bud’ko, D. C. Johnston, J. Schmalian,V. Kogan)
- Advanced Characterization (S. Bud’ko, Y. Furukawa, A. Kaminski, R. Prozorov, M. Tanatar)
- Theory and modeling (J. R. Clem, V. Kogan, J. Schmalian)
Weigand M; Civale L; Baca F J; Kim J; Bud'ko S L; Canfield P C; Maiorov B . 2013. Strong enhancement of the critical current at the antiferromagnetic transition in ErNi2B2C single crystals. Physical Review B. 87:140506.
Liu Y; Tanatar M A; Kogan V G; Kim H; Lograsso T A; Prozorov R . 2013. Upper critical field of high-quality single crystals of KFe2As2. Physical Review B. 87:134513.
Lin X; Straszheim W E; Bud'ko S L; Canfield P C . 2013. Anisotropic magnetization and resistivity of single crystalline RNi1-xBi2 +/- y (R = La-Nd, Sm, Gd-Dy). Journal of Alloys and Compounds. 554:304-311.
Murphy J; Tanatar M A; Graf D; Brooks J S; Bud'ko S L; Canfield P C; Kogan V G; Prozorov R . 2013. Angular-dependent upper critical field of overdoped Ba(Fe1-xNix)(2)As-2. Physical Review B. 87:094505.
Gordon R T; Zhigadlo N D; Weyeneth S; Katrych S; Prozorov R . 2013. Conventional superconductivity and hysteretic Campbell penetration depth in single crystals MgCNi3. Physical Review B. 87:094520.
Kim S K; Colombier E; Ni N; Bud'ko S L; Canfield P C . 2013. Evolution of the electronic transport properties of V6O11 and V7O13 under pressure. Physical Review B. 87:115140.
Bud'ko S L; Sturza M; Chung D Y; Kanatzidis M G; Canfield P C . 2013. Heat capacity jump at T-c and pressure derivatives of superconducting transition temperature in the Ba1-xKxFe2As2 (0.2 <= x <= 1.0) series. Physical Review B. 87:100509.
Tanatar M A; Hashimoto K; Kasahara S; Shibauchi T; Matsuda Y; Prozorov R . 2013. Interplane resistivity of isovalent doped BaFe2(As1-xPx)(2). Physical Review B. 87:104506.
Kim H; Sung N H; Cho B K; Tanatar M A; Prozorov R . 2013. Magnetic penetration depth in single crystals of SrPd2Ge2 superconductor. Physical Review B. 87:094515.