Leverhulme Early Career Fellowship

No. ECF-2017-186 | 1 May 2018 - 30 April 2021

Quantum and Phonon Interference in Molecular-scale Thermoelectric Materials

Fellow: Dr. Hatef Sadeghi

Abstract: Generation of electricity from heat via the Seebeck effect is silent, environmentally friendly and requires no moving parts. This proposal aims to design new thermoelectric materials for converting waste heat into electricity, by exploiting room-temperature quantum interference (RTQI) and room-temperature phonon interference (RTPI) in cross-plane (CP) nanodevice architectures. The radically-new CP nanostructured materials will be formed from parallel-arrays of molecules or multi-layered van-der-Waals (vdW) heterostructures sandwiched between metallic and/or graphene electrodes. This will be the first time that RTQI and RTPI are exploited simultaneously in manymolecule systems or vdW heterostructures to yield a new generation of high-performance thermoelectric materials.

Publications

1- Gating of single-molecule thiophene junctions towards anti-resonance with destructive quantum interference, J Bai, A Daaoub, S Sangtarash, X Li, Y Tang, Q Zou, Hatef Sadeghi, S Liu, X Huang, Z Tan, J Liu, Y Yang, J Shi, G Meszaros, W Chen, CJ Lambert, W Hong, Nature Materials, Vol. 18, No. 4, pp. 364-369, 2019. DOI: 10.1038/s41563-018-0265-4

2- Discriminating Seebeck sensing of molecules, Hatef Sadeghi, Nanoscale, Vol. 21, No. 5, pp. 2378-2381, 2019, DOI: 10.1039/C8NR08878K

3- Unusual Length-Dependence of Conductance in Cumulene Molecular Wires, W Xu, E Leary, S Hou, S Sangtarash, MT González, G Rubio-Bollinger, Q Wu, Hatef Sadeghi, L Tejerina, KE Christensen, N Agraït, SJ Higgins, CJ Lambert, RJ Nichols, and HL Anderson, Accepted in Angewandte Chemie International Edition

4- Thermoelectric properties of oligoglycine molecular wires, S Hou, Q Wu, Hatef Sadeghi, CJ Lambert, Physical Chemistry Chemical Physics, Vol. 21, No. 5, pp. 2378-2381, 2019. DOI: 10.1039/C8CP05991H

5- On the resilience of magic number theory for conductance ratios of aromatic molecules, L Ulcakar, T Rejec, J Kokalj, S Sangtarash, Hatef Sadeghi, A Ramsak, JH Jefferson, CJ Lambert, Scientific Reports, Vol. 9, No. 1, pp. 3478, 2019. DOI: 10.1038/s41598-019-39937-1

6- Magic number theory of superconducting proximity effects and Wigner delay times in graphene-like molecules, P Rakyta, A Alanazy, A Kormanyos, Z Tajkov, G Kukucska, J Koltai, S Sangtarash, Hatef Sadeghi, J Cserti, CJ Lambert, The Journal of Physical Chemistry C, Vol. 123, No. 11, pp. 6812-6822, 2019. DOI: 10.1021/acs.jpcc.8b11161

7- Atomically defined angstrom-scale all-carbon junctions, Z Tan, D Zhang, H Tian, Q Wu, S Hou, J Pi, Hatef Sadeghi, Z Tang, Y Yang, J Liu, Y Tan, Z Chen, J Shi, Z Xiao, CJ Lambert, S Xie, W Hong, Accepted in Nature Communications, 2019

8- Single-electron-transistors from molecular graphene nanoribbons, T Pei, N Dotti, P Gehring, Hatef Sadeghi, A Narita, CJ Lambert, A Briggs, K Muellen, L Bogani, Single-Molecule Sensors and NanoSystems International Conference, 2019, s3ic2019/presentation/132

9- Quantum Interference Enhanced Thermoelectricity in Ferrocene Based Molecular Junctions, AV Takaloo and Hatef Sadeghi, J. Nanosci. Nanotechnol. 19, 7452–7455 (2019)

10- Charge Transport in Graphene-based multi-molecules junctions, M E Abbassi, S Sangtarash, X Liu, M Perrin, Hatef Sadeghi, H van der Zant, S Ytzchaik, S Liu, S Decurtins, C Lambert, M Calame Bulletin of the American Physical Society, 2019, MAR19/Session/F12.13

11- The conductance of porphyrin-based molecular nanowires increases with length, N Algethami, Hatef Sadeghi, S Sangtarash, and CJ Lambert, Nano Letters, Vol. 18, no. 7, pp. 4482-4486, 2018. DOI: 10.1021/acs.nanolett.8b01621

12- Low-frequency noise in graphene tunnel junctions, P Puczkarski, Q Wu, Hatef Sadeghi, S Hou, A Karimi, Y Sheng, JH Warner, CJ Lambert, GAD Briggs, JA Mol, ACS Nano, Vol. 12, no. 9, pp. 9451-9460, 2018. DOI: 10.1021/acsnano.8b04713

1. 11 -Theory of Electron, Phonon and Spin Transport in Nanoscale Quantum Devices, Hatef Sadeghi, Nanotechnology, Vol. 29, no. 37, pp. 373001, 2018. DOI: 10.1088/1361-6528/aace21

13- Breakdown of Curly Arrow Rules in Anthraquinone, J Alqahtani, Hatef Sadeghi, S Sangtarash, CJ Lambert, Angewandte Chemie International Edition, Vol. 57, pp. 57, 15065-15069, 2018. DOI: 10.1002/anie.201807257

14- Bias-driven conductance increase with length in porphyrin tapes, E Leary, B Limburg, A Alanazy, S Sangtarash, I Grace, K Swada, LJ Esdaile, M Noori, M Teresa Gonzalez, G Rubio-Bollinger, Hatef Sadeghi, A Hodgson, N Agrait, SJ Higgins, CJ Lambert, HL Anderson, and RJ Nichols, Journal of the American Chemical Society (JACS), Vol. 140, no. 40, pp. 12877-12883, 2018. DOI: 10.1021/jacs.8b06338

15- Heteroatom-induced molecular asymmetry tunes quantum interference in charge transport through single-molecule junctions, Y Yang, M Gantenbein, A Alqorashi, J Wei, S Sangtarash, D Hu, Hatef Sadeghi, R Zhang, J Pi, L Chen, X Huang, R Li, J Liu, J Shi, W Hong, CJ Lambert, MR Bryce, Journal of Physical Chemistry C, Vol. 122, no. 26, pp. 14965-14970, 2018. DOI: 10.1021/acs.jpcc.8b03023

16- A single-molecule porphyrin-based switch for graphene nano-gaps, Q Wu, S Hou, Hatef Sadeghi, C Lambert, Nanoscale, Vol. 10, no. 14, pp. 6524-6530, 2018. DOI: 10.1039/C8NR00025E

17- Anchor groups for graphene-porphyrin single-molecule transistors, B Limburg, JO Thomas, G Holloway, Hatef Sadeghi, S Sangtarash, IC Hou, J Cremers, A Narita, K Müllen, CJ Lambert,GAD Briggs, J Mol, and HL Anderson, Advanced 18- Functional Materials, Vol. 28, pp. 1803629, 2018. DOI: 10.1002/adfm.201803629

18- Heteroatom-induced molecular asymmetry tunes quantum interference in charge transport through single-molecule junctions, Y Yang, M Gantenbein, A Alqorashi, J Wei, S Sangtarash, D Hu, Hatef Sadeghi, R Zhang, J Pi, L Chen, X Huang, R Li, J Liu, J Shi, W Hong, CJ Lambert, MR Bryce, The Journal of Physical Chemistry C, Vol. 122, no. 26, pp. 14965-14970, 2018. DOI: 10.1021/acs.jpcc.8b03023

19- Probing Lewis Acid-Base Interactions in Single-Molecule Junctions, X Liu, X Li, S Sangtarash, Hatef Sadeghi, S Decurtins, R Haener, W Hong, C Lambert, S Liu, Nanoscale, Vol. 10, no. 38, pp. 18131-18134 , 2018. DOI: 10.1039/C8NR06562D

20- Stable-radicals increase the conductance and Seebeck coefficient of graphene nanoconstrictions, M Noori, Hatef Sadeghi, CJ Lambert, Nanoscale, Vol. 10, no. 40, pp. 19220-19223, 2018. DOI: 10.1039/C8NR04869J

21- MoS2 nano flakes with self-adaptive contacts for efficient thermoelectric energy harvesting, Q Wu, Hatef Sadeghi, CJ Lambert, Nanoscale, Vol. 10, no. 16, pp. 7575-7580, 2018. DOI: 10.1039/C8NR01635F

22- Connectivity-driven bi-thermoelectricity in heteroatom-substituted molecular junctions, S Sangtarash, Hatef Sadeghi, CJ Lambert, Physical Chemistry Chemical Physics, Vol. 20, no. 14, pp. 9630-9637, 2018. DOI: 10.1039/C8CP00381E