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Publications for: Rudolf Torsten Clay (Torsten)
Peer-Reviewed Journals
Clay, R. T., & Roy, D. (2020). Superconductivity Due to Cooperation of Electron-electron and Electron-phonon Interactions at Quarter Filling. Phys. Rev. Research. 2, 023006. DOI:10.1103/PhysRevResearch.2.023006. [Document Site]

Clay, R. T., Gomes, N., & Mazumdar, S. (2019). Theory of Triangular Lattice Quasi-one-dimensional Charge-transfer Solids. Phys. Rev. B. 100, 115158. DOI:10.1103/PhysRevB.100.115158. [Document Site]

Clay, R. T., & Mazumdar, S. (2018). From Charge- and Spin-ordering to Superconductivity in the Organic Charge-transfer Solids. Physics Reports. 788, 1-89. DOI:10.1016/j.physrep.2018.10.006. [Document Site]

Clay, R. T., Ward, A. B., & Mazumdar, S. (2017). Bond Patterns and Charge-order Amplitude in Quarter-filled Charge-transfer Solids. Phys. Rev. B. 95, 125114. [Document Site]

DeSilva, W. W., Gomes, N., Mazumdar, S., & Clay, R. T. (2016). Coulomb Enhancement of Superconducting Pair-pair Correlations in a 3/4-filled Model for κ−(BEDT-TTF)2X. Phys. Rev. B. 93, 205111. DOI:10.1103/PhysRevB.93.205111. [Document Site]

Gomes, N., DeSilva, W. W., Dutta, T., Clay, R. T., & Mazumdar, S. (2016). Coulomb-enhanced Superconducting Pair Correlations and Paired-electron Liquid in the Frustrated Quarter-filled Band. Phys. Rev. B. 93, 165110. DOI:10.1103/PhysRevB.93.165110. [Document Site]

Ward, A. B., Clay, R. T., & Mazumdar, S. (2014). Comment on &Ldquo;Tuning the Magnetic Dimensionality by Charge Ordering in the Molecular TMTTF Salts”. Phys. Rev. Lett.. 113, 029701. DOI:10.1103/PhysRevLett.113.029701. [Document Site]

Mazumdar, S., & Clay, R. T. (2014). The Chemical Physics of Unconventional Superconductivity. Int. J. Quantum Chem. 114, 1053-1059. DOI:10.1002/qua.24637. [Document Site]

Song, J. P., & Clay, R. T. (2014). Monte Carlo Simulations of Two-dimensional Fermion Systems with String-bond States. Physical Review B. 89, 075101. DOI:10.1103/PhysRevB.89.075101. [Abstract] [Document] [Document Site]

Gomes, N., Clay, R. T., & Mazumdar, S. (2013). Absence of Superconductivity and Valence Bond Order in the Hubbard-Heisenberg Model for Organic Charge-transfer Solids. J. Phys.: Condens. Matter. 25, 385603. DOI:10.1088/0953-8984/25/38/385603. [Document]

Clay, R. T., Song, J. P., Dayal, S., & Mazumdar, S. (2012). Ground State and Finite Temperature Behavior of 1/4-filled Band Zigzag Ladders. Journal of the Physical Society of Japan. 81(7), 074707. [Document Site]

Dayal, S., Clay, R. T., & Mazumdar, S. (2012). Absence of Long-range Superconducting Correlations in the Frustrated Half-filled-band Hubbard Model. Physical Review B. American Physical Society. 85(16), 165141.

Dayal, S., Clay, R. T., Li, H., & Mazumdar, S. (2011). Paired Electron Crystal: Order from Frustration in the Quarter-Filled Band. Physical Review B. American Physical Society. 83(24), 245106. [Abstract] [Document]

Li, H., Clay, R. T., & Mazumdar, S. (2011). Theory of Carrier Concentration-Dependent Electronic Behavior in Layered Cobaltates. Physical Review Letters. American Physical Society. 106, 216401(4 pages). [Document]

Clay, R. T., Li, H., Sarkar, S., Mazumdar, S., & Saha-Dasgupta, T. (2010). Cooperative Orbital Ordering and Peierls Instability in the Checkerboard Lattice with Doubly Degenerate Orbitals. Physical Review B. 82(3), 035108(7 pages). [Abstract] [Document Site]

Li, H., Clay, R. T., & Mazumdar, S. (2010). The Paired-Electron Crystal in the Two-Dimensional Frustrated Quarter-Filled Band. J. Phys.:Condens. Matter. 22, 272201. [Document Site]

Clay, R. T., Li, H., & Mazumdar, S. (2008). Absence of Superconductivity in the Half-Filled Band Hubbard Model on the Anisotropic Triangular Lattice. Phys. Rev. Lett.. 101, 166403(4 pages). [Abstract] [Document Site]

Mazumdar, S., & Clay, R. T. (2008). Quantum Critical Transition from Charge-ordered to Superconducting State in the Negative-U Extended Hubbard Model on a Triangular Lattice. Phys. Rev. B. 77, 180515(R). [Abstract] [Document Site]

Clay, R. T., Hardikar, R. P., & Mazumdar, S. (2007). Temperature-driven Transition from the Wigner Crystal to the Bond-charge-density Wave in the Quasi-one-dimensional Quarter-filled Band. Phys. Rev. B. 76, 205118. [Abstract] [Document Site]

Hardikar, R. P., & Clay, R. T. (2007). Phase Diagram of the One-dimensional Hubbard-Holstein Model at Half and Quarter Filling. Phys. Rev. B. 75, 245103. [Abstract] [Document Site]

Clay, R. T., & Hardikar, R. P. (2005). Intermediate Phase of the One Dimensional Half-Filled Hubbard-Holstein Model. Phys. Rev. Lett.. 95, 096401(4 pages). [Abstract] [Document Site]

Clay, R. T., & Mazumdar, S. (2005). Cooperative Density Wave and Giant Spin Gap in the Quarter-Filled Zigzag Electron Ladder. Phys. Rev. Lett.. 94, 207206(4 pages). [Abstract] [Document Site]

Clay, R. T., Mazumdar, S., & Campbell, D. K. (2003). Pattern of Charge Ordering in Quasi-one-dimensional Organic Charge-transfer Solids. Phys. Rev. B. 67, 115121. [Document Site]

Clay, R. T., & Mazumdar, S. (2002). Comment On. Phys. Rev. Lett.. 89, 039701. [Document Site]

Clay, R. T., Mazumdar, S., & Campbell, D. K. (2001). Re-Integerization of Fractional Charges in the Correlated Quarter-Filled Band. Phys. Rev. Lett.. 86, 4084. [Abstract] [Document Site]

Mazumdar, S., Clay, R. T., & Campbell, D. K. (2000). Bond-order and Charge-density Waves in the Isotropic Interacting Two-dimensional Quarter-filled Band and the Insulating State Proximate to Organic Superconductivity. Phys. Rev. B. 62, 13400. [Document Site]

Lin, H. Q., Campbell, D. K., & Clay, R. T. (2000). Broken Symmetries in the One-Dimensional Extended Hubbard Model. Chinese Journal of Physics. 38, 1. [Abstract] [Document]

Mazumdar, S., Campbell, D. K., Clay, R. T., & Ramasesha, S. (1999). Comment on "Wigner Crystal Type of Charge Ordering in an Organic Conductor with a Quarter-Filled Band: (DI-DCNQI)2Ag". Phys. Rev. Lett.. 82, 2411. [Document Site]

Clay, R. T., Sandvik, A. W., & Campbell, D. K. (1999). Possible Exotic Phases in the One-dimensional Extended Hubbard Model. Phys. Rev. B. 59, 4665-4679. [Abstract] [Document Site]

Peer-Reviewed Conference Papers
Clay, R. T., Dayal, S., Li, H., & Mazumdar, S. (2012). Beyond the Quantum Spin Liquid Concept in Frustrated Two Dimensional Organic Superconductors. Physica Status Solidi B. ISCOM 2011, Gnienzo, Poland. 249(5), 991-994.

Mazumdar, S., & Clay, R. T. (2012). Is There a Common Theme Behind the Correlated-electron Superconductivity in Organic Charge-transfer Solids, Cobaltates, Spinels and Fullerides? Physica Status Solidi B. ISCOM 2011, Gniezno, Poland. 249(5), 995-998.

Mazumdar, S., Clay, R. T., & Li, H. (2012). Similarities in Electronic Properties of Organic Charge-transfer Solids and Layered Cobaltates. Physica B. ECRYS 2011, Cargese, Corsica, France. 407, 1722-1724.

Clay, R. T., Li, H., & Mazumdar, S. (2010). Bipolaron Density-Wave Driven by Antiferromagnetic Correlations and Frustration in Organic Superconductors. Physica B. Niseko, Japan. 405(11S), S253-S255. [Document]

Mazumdar, S., Clay, R. T., & Li, H. (2009). From Valence Bond Solid to Unconventional Superconductivity in the Organic Charge-transfer Solids. Synthetic Metals. ICSM 2008, Pernambuco, Brazil. [Abstract] [Document Site]

Clay, R. T., Mazumdar, S., & Li, H. (2008). Local Singlets, Frustration, and Unconventional Superconductivity in the Organic Charge-transfer Solids. Physica B. ECRYS 2008, Cargese, Corsica, France. 404(3-4), 487-489. [Document Site]

Musfeldt, J. L., Brown, S., Mazumdar, S., Clay, R. T., Mas-Torrent, M., Rovira, C., Dias, J. C., Henriques, R. T., & Almeida, M. (2008). Infrared Investigation of the Charge Ordering Pattern in the Organic Spin Ladder Candidate (DTTTF)2Cu(mnt)2. Solid State Sciences. ISCOM 2007, Peniscola, Spain. 10(12), 1740-1744. [Document Site]

Clay, R. T., & Mazumdar, S. (2006). Charge Ordering and Spin Gap Transitions in Quarter-filled Ladders. J. Low Temp. Phys.. ISCOM 2005, Key West, FL. 142(3/4), 365-370. [Document Site]

Clay, R. T., & Mazumdar, S. (2005). Magnetism in BEDT-TTF Materials. Synthetic Metals. ICSM 2004, Wollongong, Australia. 153, 445-448. [Document Site]

Non-Refereed Conference Abstracts
De Silva, W., & Clay, R. T. (2014). Nearest Neighbor Interaction in the Path Integral Renormalization Group Method. Bulletin of the American Physical Society. Denver, CO: American Physical Society. 59(1). [Abstract] [Document] [Document Site]

Song, J. P., & Clay, R. T. (2014). Monte Carlo Simulations of Two-dimensional Fermion Models with String Bond Tensor-network States. Bulletin of the American Physical Society. Denver, CO: American Physical Society. 59(1). [Abstract] [Document] [Document Site]

Ward, A. B., Clay, R. T., & Mazumdar, S. (2014). Theory of the Magnetic Ground States of TMTTF_2X. Bulletin of the American Physical Society. Denver, CO: American Physical Society. 59(1). [Abstract] [Document] [Document Site]

Clay, R. T., & Mazumdar, S. (2014). A 1/4-filled Band Model for the Organic Superconductor κ-(ET)2X. Bulletin of the American Physical Society. Denver, CO: American Physical Society. 59(1). [Abstract] [Document] [Document Site]

Dayal, S., Clay, R. T., & Mazumdar, S. (2012). Superconducting Pair-pair Correlations in the Half-filled Hubbard Model on the Anisotropic Triangular Lattice: Absence of Long-range Order. Bulletin of the American Physical Society. Boston, MA: American Physical Society. 57(1). [Document] [Document Site]

Clay, R. T., Song, J. P., Dayal, S., & Mazumdar, S. (2012). Ground State and Finite Temperature Behavior of 1/4-filled Zigzag Ladders. Bulletin of the American Physical Society. Boston, MA: American Physical Society. 57(1). [Document] [Document Site]

Song, J. P., & Clay, R. T. (2011). Quantum Monte Carlo Simulations with Tensor-network States. Bulletin of the American Physical Society. APS March Meeting 2011, Dallas, TX: American Physical Society. 56(1). [Document] [Document Site]

Dayal, S., Clay, R. T., Li, H., & Mazumdar, S. (2011). The Paired Electron Crystal: Order from Frustration in the Quarter-filled Band. Bulletin of the American Physical Society. APS March Meeting 2011: American Physical Society. 56(1). [Document] [Document Site]

Li, H., Clay, R. T., & Mazumdar, S. (2011). Theory of the Carrier Concentration-dependent Behavior in Layered Cobaltates. Bulletin of the American Physical Society. APS March Meeting 2011, Dallas, TX: American Physical Society. 56(1). [Document] [Document Site]

Clay, R. T., Dayal, S., Li, H., & Mazumdar, S. (2011). The Paired Electron Crystal in Quarter-filled Organic Superconductors. Bulletin of the American Physical Society. APS March Meeting 2011, Dallas, TX: American Physical Society. 56(1). [Document] [Document Site]

Clay, R. T., Dayal, S., Li, H., & Mazumdar, S. (2010). The Paired-Electron Crystal in the Two-Dimensional Frustrated Quarter-Filled Band. Bulletin of the American Physical Society. 2010 APS March Meeting, Portland, OR: American Physical Society. [Abstract] [Document Site]

Li, H., Mazumdar, S., & Clay, R. T. (2010). Systematic Band-Filling Dependence in the Strongly-Correlated Triangular Lattice. Bulletin of the American Physical Society. APS 2010 March Meeting, Portland, OR: American Physical Society. [Abstract] [Document Site]

Dayal, S., & Clay, R. T. (2009). Finite-temperature Quantum Monte Carlo Study of a Molecular Spin Ladder. Bulletin of the American Physical Society. 76th Annual Meeting of the Southeastern Section of APS, Atlanta, GA: American Physical Society. 56(16). [Document] [Document Site]

Clay, R. T., & Mazumdar, S. (2009). Antiferromagnetic to Singlet Transition in the Quarter-filled Band. Bulletin of the American Physical Society. 2009 APS March Meeting, Pittsburgh, PA: American Physical Society. 54. [Document Site]

Li, H., Clay, R. T., & Mazumdar, S. (2009). Absence of Superconductivity in the Half-filled Anisotropic Triangular Lattice Hubbard Model. Bulletin of the American Physical Society. 2009 APS March Meeting, Pittsburgh, PA: American Physical Society. 54. [Abstract] [Document Site]

Clay, R. T. (2008). From Spatially-ordered Valence-bond Solid to Unconventional Superconductivity in Organic Charge-transfer Solids. N/A. 2nd Workshop on Novel Electronic Materials, University of Kentucky, Lexington, KY. [Document] [Document Site]

Clay, R. T., Hardikar, R. P., & Mazumdar, S. (2008). Spin-soliton Excitations from the Bond-Charge-Density Wave Spin-Peierls State in the 1/4-filled Band. Bulletin of the American Physical Society. 2008 APS March Meeting, New Orleans, LA: American Physical Society. 53. [Document Site]

Mazumdar, S., Hardikar, R. P., & Clay, R. T. (2008). Temperature Dependence of Charge-ordering in (TMTCF)_2X, C = S, Se. Bulletin of the American Physical Society. 2008 APS March Meeting, New Orleans, LA: American Physical Society. 53. [Document Site]

Musfeldt, J. L., Brown, S., Mazumdar, S., Clay, R. T., Mas-Torrent, M., Rovira, C., Dias, J. C., Henriques, R. T., & Almeida, M. (2008). Infrared Investigation of the Charge Ordering Pattern in the Organic Spin Ladder Candidate (DTTTF)2Cu(mnt)2. Bulletin of the American Physical Society. 2008 APS March Meeting, New Orleans, LA: American Physical Society. 53. [Document Site]

Song, J. P., & Clay, R. T. (2008). Quantum Monte Carlo Study of a Spin-Peierls Model in a Magnetic Field. Bulletin of the American Physical Society. 2008 APS March Meeting, New Orleans, LA: American Physical Society. 53. [Abstract] [Document Site]

Professional Presentations
Clay, R. T. (2013). A Minimal Model for Antiferromagnetism, Charge-disproportionation, Valence Bond Solid Formation and Superconductivity in the Charge-transfer Solids Kappa-(ET)_2X and Z-[Pd(dmit)_2]_2. 10th International Symposium on Crystalline Organic Metals, Superconductors, and Ferromagnets (ISCOM). Montreal, Canada. [Document]

Clay, R. T., Gomes, N., & Mazumdar, S. (2013). A Possible Paired-electron Liquid in a 1/4-filled Band Model of Kappa-(ET)2X. Bulletin of the American Physical Society. Baltimore, MD: American Physical Society. 58(1). [Document] [Document Site]

Gomes, N., Clay, R. T., & Mazumdar, S. (2013). The Effective Half-filled Band Model Is Inappropriate for the Dimerized 2D Organic Superconductors. Bulletin of the American Physical Society. Baltimore, MD: American Physical Society. 58(1). [Document] [Document Site]

Clay, R. T. (2012). Theory of Layered Organic and Inorganic Materials with Charge-spin Frustration. http://science.energy.gov/bes/mse/principal-investigators-meetings/. DOE Theoretical Condensed Matter Physics Principal Investigator's meeting, Rockville, MD: US Department of Energy. [Document]

Clay, R. T. (2012). Correlations between Bond Structure and Thermodynamics in Organic Superconductors. International Conference on Science and Technology of Synthetic Metals (ICSM 2012). [Document] [Document Site]

Clay, R. T. (2012). Computational Strongly Correlated Materials. CCS Annual Meeting, Starkville, MS. [Document]

Clay, R. T. (2011). Singlet Formation Mediated by Frustration in Two Dimensional Quarter-filled Systems. Molecular Degree of Freedom International Mini-Workshop, Kobe, Japan. [Document] [Document Site]

Clay, R. T. (2011). Frustration, Charge Order, and Singlet Formation in Strongly-correlated Quarter-filled Band Materials. Workshop at Institute for Materials Research, Tohoku University, Sendai, Japan. [Document Site]

Clay, R. T. (2011). Theory of Two Dimensional Charge-ordered Molecular Crystals. Colloquium, The Institute for Solid State Physics, The University of Tokyo, Kashiwa, Japan. [Document Site]

Clay, R. T., Dayal, S., & Mazumdar, S. (2011). The Two Faces of Kappa-ET and Beta'-DMIT: 1/2-filled Antiferromagnet Versus 1/4-filled Superconductor. 9th International Symposium on crystalline organic metals, superconductors, and ferromagnets (ISCOM), Gniezno, Poland. [Document Site]

Mazumdar, S., & Clay, R. T. (2011). Is There a Common Theme Behind Correlated-electron Superconductivity in the Organic Charge-transfer Solids, Cobaltates, Spinels, and Fullerides? 9th International Symposium on Crystalline organic metals, superconductors, and ferromagnets (ISCOM), Gniezno, Poland. [Document Site]

Clay, R. T. (2011). Lattice Frustration in 1/4-filled Strongly-correlated Systems. Informal theory seminar, Insitute for Solid State Physics, The University of Tokyo, Kashiwa, Japan. [Document Site]

Mazumdar, S., & Clay, R. T. (2011). Is There a Common Theme Behind Correlated-electron Superconductivity in Organic Charge-transfer Solids, Cobaltates, Spinels, and Fullerides? ECRYS 2011 International School and Workshop on Electronic Crystals, Cargese, Corsica, France. [Document Site]

Clay, R. T. (2011). The Paired-Electron Crystal: Order from Frustration in the Quarter-filled Band. Condensed Matter Theory Seminar, Department of Physics, Boston University, Boston, MA. [Document Site]

Clay, R. T. (2011). The Paired-Electron Crystal: Order and Frustration in the Quarter-filled Band. Chemistry-Physics Seminar, University of Arizona, Tucson, AZ. [Document Site]

Mazumdar, S., Li, H., & Clay, R. T. (2010). From Charge- and Spin-ordering to Superconductivity in the Organic Charge-transfer Solids. International Conference on Science and Technology of Synthetic Metals 2010 (ICSM), Kyoto, Japan.