Cohn Lab

2024

A. Akopyan, N. Prasai, A. Rebello, J. J. Neumeier, and J. L. Cohn, Anisotropic thermal conductivity of CuO. Physical Review Materials 8, 124403 (2024). 

2023

J. L. Cohn, C. A. M. dos Santos, and J. J. Neumeier, Superconductivity at carrier density 10¹⁷ cm⁻³ in quasi-one-dimensional Li_0.9Mo₆O₁₇, Physical Review B 108, L100512 (2023). 

2021

Mary O. Olagunju, Elsayed M. Zahran, Elnaz Zeynaloo, Dharmendra Shukla, Joshua L. Cohn, Bapurao Surnar, Shanta Dhar, Leonidas G. Bachas, and Marc R. Knecht, Design of Pd-Decorated SrTiO₃/BiOBr Heterojunction Materials for Enhanced Visible-Light-Based Photocatalytic Reactivity, Langmuir 37, 11986 (2021).

Mary O. Olagunju, Elsayed M. Zahran, Jacqueline M. Reed, Elnaz Zeynaloo, Dharmendra Shukla, Joshua L. Cohn, Bapurao Surnar, Shanta Dhar, Leonidas G. Bachas, and Marc R. Knecht, Halide Effects in BiVO₄/BiO_X Heterostructures Decorated with Pd Nanoparticles for Photocatalytic Degradation of Rhodamine B as a Model Organic Pollutant, ACS Applied Nano Materials 4, 3262 (2021).

Ahmed E. ElMetwally, Elnaz Zeynaloo, Dharmendra Shukla, Bapurao Surnar, Shanta Dhar, Joshua L. Cohn, Marc R. Knecht, and Leonidas G. Bachas, Cu₂O Cubes Decorated with Azine-Based Covalent Organic Framework Spheres and Pd Nanoparticles as Tandem Photocatalyst for Light-Driven Degradation of Chlorinated Biphenyls, ACS Applied Nano Materials 4, 2795 (2021).

2020

Mary O. Olagunju, Xavier Poole, Patricia Blackwelder, Melonie P. Thomas, Beth S. Guiton, Dharmendra Shukla, Joshua L. Cohn, Bapurao Surnar, Shanta Dhar, Elsayed M. Zahran, Leonidas G. Bachas, and Marc R. Knecht, Size-Controlled SrTiO₃ Nanoparticles Photodecorated with Pd Cocatalysts for Photocatalytic Organic Dye Degradation, ACS Applied Nano Materials 3, 4904 (2020).

D. S. Inosov, Y. O. Onykiienko, Y. V. Tymoshenko, A. Akopyan, D. Shukla, N. Prasai, M. Doerr, S. Zherlitsyn, D. Voneshen M. Boehm, V. Tsurkan, V. Felea, A. Loidl, and J. L. Cohn, Magnetic-field dependence of low-energy magnons, anisotropic heat conduction, and spontaneous relaxation of magnetic domains in the cubic helimagnet ZnCr₂Se₄, Physical Review B 102, 184431 (2020).

Mahamalage Kusumitha Perera, James D. Englehardt, Joshua L. Cohn, Edward A Dauer, Dharmendra Shukla, Electrohydromodulation for phosphate recovery from wastewater, Separation and Purification Technology 247, 116909 (2020).

A. Akopyan, N. Prasai, B. A. Trump, G. G. Marcus, T. M. McQueen, and J. L. Cohn, Spin Seebeck Effect in Cu₂OSeO₃: Test of Bulk Magnon Spin-Current Theory, Physical Review B 101, 100407(R) (2020).

2019

D. Shukla, N. Prasai, T. M. Carlino, M. M. A. Mazza, A. M. Scott, and J. L. Cohn, Anisotropic Heat Conduction in the Metal Organic Framework Perovskites [C(NH₂)₃]X(HCOO)₃ (X=Cu, Zn), Applied Physics Letters 114, 081907 (2019).

N. Prasai, A. Akopyan, B. A. Trump, G. G. Marcus, S. X. Huang, T. M. McQueen, and J. L. Cohn, Spin phases of the helimagnetic insulator Cu₂OSeO₃ probed by magnon heat conduction, Physical Review B 99, 020403(R) (2019).

D. C. Bell, C. J. Munro, J. M. Slocik, D. Shukla, A. D. Parab, J. Cohn, and M. Knecht, Biomimetic strategies to produce catalytically reactive CuS nanodisks, Nanoscale Advances 1, 2857-2865 (2019).

C. J. Munro, E. C. Bell, M. O. Olagunju, J. L. Cohn, E. M. Zahran, L. G. Bachas, and M. R. Knecht, Amino Acids for Sustainable Production of Cu₂O Materials: Effects on Morphology and Photocatalytic Reactivity, ACS Sustainable Chemistry and Engineering 7, 17055-17064 (2019).

2018

N. Prasai, A. B. Christian, J. J. Neumeier, and J. L. Cohn, Resonant scattering of phonons in the quasi-one-dimensional spin-chain compounds AB₂O₆ (A = Ni, Co; B = Sb, Ta) , Physical Review B 98, 134449 (2018).

2017

N. Prasai, B. Trump, M. Marcus, A. Akopyan, S.-X. Huang, McQueen, and J. L. Cohn, Ballistic magnon heat conduction and possible Poiseuille flow in the helimagnetic insulator Cu₂OSeO₃. Physical Review B 95, 224407 (2017) (Editor’s Suggestion). 

2016

S. Moshfeghyeganeh, A. N. Cote, J. J. Neumeier and J. L. Cohn, Anisotropic transport in the quasi-one-dimensional semiconductor Li_0.33MoO₃, Journal of Applied Physics 119, 095105 (2016).

2015

S. H. Masunaga, A. Rebello, A. T. Schye, N.Prasai, J. J. Neumeier, and J. L. Cohn, Heat capacity, thermal expansion and heat transport in the Han Blue (BaCuSi₄O₁₀): Observation of structural phase transitions, Journal of Physics and Chemistry of Solids 85, 69 (2015).

N. Prasai, A. Rebello, A. B. Christian, J. J. Neumeier, and J. L. Cohn, Phonon-spin scattering and magnetic heat transport in the quasi-one-dimensional spin-1/2 antiferromagnetic chain compound CuSb₂O₆, Physical Review B 91, 054403 (2015). 

2014

J. L. Cohn, S. Moshfeghyeganeh, C. A. M. dos Santos, and J. J. Neumeier, Extreme Thermopower Anisotropy and Interchain Transport in the Quasi-One-Dimensional Metal Li_0.9Mo₆O₁₇, Physical Review Letters 112, 186602 (2014). 

2012

J. L.Cohn, B. D. White, C. A. M. dos Santos, and J. J. Neumeier, Giant Nernst Effect and Bipolarity in the Quasi-One-Dimensional Metal, Li_0.9Mo₆O₁₇, Physical Review Letters 108, 056604 (2012) (Editor’s Suggestion) Featured in Physics Synopsis. 

J. L. Cohn, P. Boynton, J. S. Triviño, J. Trastoy, B. D. White, C. A. M. dos Santos, and J. J. Neumeier, Stoichiometry, structure, and transport in the quasi-one- dimensional metal Li_0.9Mo₆O₁₇, Physical Review B 86, 195143 (2012).

E. J. Moon, J. M. Rondinelli, N. Prasai, B. A. Gray, M. Kareev, J. Chakhalian, and J. L. Cohn, Strain-controlled band engineering and self-doping in ultrathin LaNiO₃ films, Physical Review B 85, 121106(R) (2012).

2011

J. Chakhalian, J. M. Rondinelli, Jian Liu, B. A. Gray, M. Kareev, E. J. Moon, N. Prasai, J. L. Cohn, M. Varela, I. C. Tung, M. J. Bedzyk, S. G. Altendorf, F. Strigari, B. Dabrowski, L. H. Tjeng, P. J. Ryan, and J.W. Freeland, Asymmetric Orbital-Lattice Interactions in Ultrathin Correlated Oxide Films, Physical Review Letters 107, 116805 (2011).

2010

A. de Campos, M. S. da Luz, C. A. M. dos Santos, A. T. Rice, A. M. Deml, B. D. White, J. J. Neumeier, and J. L. Cohn, Physical properties of quasi-one-dimensional SrNbO_3.41 and Luttinger liquid analysis of electrical transport, Physical Review B 82, 125117 (2010).

2009

K. Neupane, J. J. Neumeier, and J. L. Cohn, Anisotropic in-plane strain and transport in epitaxial Nd_0.2Sr_0.8MnO₃ thin films, Journal of Applied Physics 106, 123904 (2009).

B. D. White, J. A. Souza, C. Chiorescu, J. J. Neumeier, and J. L. Cohn, Magnetic, transport, and thermodynamic properties of CaMn₂O₄ single crystals, Physical Review B 79, 104427 (2009).

2008

C. Chiorescu, J. J. Neumeier, and J. L. Cohn, Giant Electrothermal Conductivity and Spin-phonon Coupling in an Antiferromagnetic Oxide,  Physical Review Letters 101, 257202 (2008). 

2007

C. Chiorescu, J. L. Cohn, and J. J. Neumeier, Impurity conduction and magnetic polarons in antiferromagnetic oxides, Physical Review B 76, 020404(R) (2007).

2006

K. P. Neupane, J. L. Cohn, H. Terashita, and J. J. Neumeier, Doping dependence of polaron hopping energies in La_1-xCa_xMnO₃ (0 < x < 0.15), Physical Review B 74, 144428 (2006).

M. A. Pires, C. Israel, W. Iwamoto, R. R. Urbano, O. Agüero, I. Torriani, C. Rettori, P. G. Pagliuso, L. Walmsley, Z. Le, J. L. Cohn, and S. B. Oseroff, Role of oxygen vacancies in the magnetic and dielectric properties of the high-dielectric-constant system CaCu3Ti4O12: An electron-spin resonance study, Physical Review B 73, 224404 (2006).

C. Chiorescu, J. J. Neumeier, and J. L. Cohn, Magnetic inhomogeneity and magnetotransport in electron-doped Ca_1-xLa_xMnO₃ (0 < x < 0.10), Physical Review B 73, 014406 (2006).

2005

J. L. Cohn, C. Chiorescu, and J. J. Neumeier, Polaron transport in the paramagnetic phase of electron-doped manganites, Physical Review B 72, 024422 (2005).  

J. L. Cohn, M. Peterca, and J. J. Neumeier, Giant dielectric permittivity of electron-doped manganite thin films, Ca_1-xLa_xMnO₃ (0<=x<=0.03), Journal of Applied Physics 97, 034102 (2005).

2004

J. L. Cohn, M. Peterca, and J. J. Neumeier, Low-temperature permittivity of insulating perovskite manganites, Physical Review B 70, 214433 (2004).  

G.S. Nolas, J.L. Cohn, J. S. Dyck, C. Uher, G. A. Lamberton, Jr., and T.M. Tritt, Low temperature transport properties of polycrystalline Ba₈Ga₁₆Sn₃₀, Journal of Materials Research 19, 3556 (2004).

2002

R. Maier and J. L. Cohn, Ferroelectric and ferrimagnetic iron-doped thin-film BaTiO3: Influence of iron on physical properties, Journal of Applied Physics 92, 5429 (2002).

J. L. Cohn and J. J. Neumeier, Heat conduction and magnetic phase behavior in electron-doped Ca_1-xLa_xMnO₃ (0< x <0.2), Physical Review B 66, 100404 (2002).  

G. S. Nolas, D. G. Vanderveer, A. P. Wilkinson, and J. L. Cohn, Temperature dependent structural and transport properties of the type II clathrates A₈Na₁₆E₁₃₆ (A = Cs or Rb and E = Ge or Si), Journal of Applied Physics 91, 8970 (2002).

G. S. Nolas, J. L. Cohn, J. S. Dyck, C. Uher, and J. Yang Transport properties of polycrystalline type-I Sn clathrates, Physical Review B 65, 165201 (2002).

2001

R. Maier, J. L. Cohn, J. J. Neumeier, and L. A. Bendersky, Ferroelectricity and ferrimagnetism in iron-doped BaTiO₃, Applied Physics Letters 78, 2356 (2001).

2000

J. J. Neumeier and J. L. Cohn, Possible signatures of magnetic phase segregation in electron-doped antiferromagnetic CaMnO₃, Physical Review B 61, 14319 (2000).  

J. L. Cohn, Electrical and Thermal Transport in Perovskite Manganites, Journal of Superconductivity: Incorporating Novel Magnetism 13, 291 (2000).

J. L. Cohn, Heat Conduction and Charge Ordering in Perovskite Manganites, Nickelates and Cuprates, Thermal Conductivity 25, Thermal Expansion 13, ed. by C. Uher and D. T. Morelli, (Technomic Publishing, Lancaster, PA, 2000), pp. 87-97

L. A. Bendersky, R. Maier, J. L. Cohn, and J. J. Neumeier, Structural studies of pulsed-laser-deposited Ba₄Fe₄Ti₃O₁₆ oxide films, Journal of Materials Research 15, 1389 (2000).

G. S. Nolas, T. J. Weakley, J. L. Cohn, and R. Sharma, Structural properties and thermal conductivity of crystalline Ge clathrates, Physical Review B 61, 3845 (2000).

Selection of Papers Prior to 2000

G. S. Nolas, T. J. Weakley, and J. L. Cohn, Structural, chemical and transport properties of a new clathrate compound: Cs₈Zn₄Sn₄₂, Chemistry of Materials 1, 2470 (1999).

J. L. Cohn, G. S. Nolas, V. Fessatidis, T. H. Metcalf, and G. A. Slack, Glasslike Heat Conduction in High-Mobility Crystalline Semiconductors, Physical Review Letters 82, 779 (1999).

J. L. Cohn, C. P. Popoviciu, Q. M. Lin, and C. W. Chu, Hole localization in underdoped superconducting cuprates near 1/8 doping, Physical Review B 59, 3823 (1999).  

J. L. Cohn, Thermal Transport as a Probe of Localized Charge and Lattice Distortions in Manganites and Cuprates, Journal of Superconductivity 12, 281 (1999).

G. S. Nolas, J. L. Cohn, G. A. Slack, and S. B. Schujman, Semiconducting Ge clathrates: Promising candidates for thermoelectric applications, Applied Physics Letters 73, 178 (1998).

J. L. Cohn and J. Karpinski, Anisotropic in-plane thermal conductivity of single-crystal YBa₂Cu₄O₈, Physical Review B 58, 14617 (1998).

G. S. Nolas, J. L. Cohn, and G. A. Slack, Effect of partial void filling on the lattice thermal conductivity of skutterudites, Physical Review B 58, 164 (1998).

J. L. Cohn, J. J. Neumeier, C. P. Popoviciu, K. J. McClellan, and Th. Leventouri, Local lattice distortions and thermal transport in perovskite manganites, Physical Review B 56, R8495 (1997).

C. P. Popoviciu and J. L. Cohn, Thermal transport in YBa₂Cu₃O_6+x: Doping dependence across the phase diagram, Physical Review B 55, 3155 (1997).

S. E. Barnes, J. L. Cohn, and F. Zuo, The Possibility of Flux Flow Spectroscopy, Physical Review Letters 77, 3252 (1996).

Joshua L. Cohn, Superconducting-state enhancement of thermal conductivity in the cuprates: Correlation with the pair density, Physical Review B 53, R2963 (1996).

J. L. Cohn, C. K. Lowe-Ma, and T. A. Vanderah, Anomalous phonon damping and thermal conductivity in insulating cuprates, Physical Review B 52, R13134 (1995).