Pub Date : 2023-11-10DOI: 10.1142/s201032472340026x
Towhidur Rahaman, Abhishek Kumar, Soumya Jyoti Ray, Debangsu Roy
{"title":"2D van der Waals Materials and Heterostructures for SOT Applications","authors":"Towhidur Rahaman, Abhishek Kumar, Soumya Jyoti Ray, Debangsu Roy","doi":"10.1142/s201032472340026x","DOIUrl":"https://doi.org/10.1142/s201032472340026x","url":null,"abstract":"","PeriodicalId":54319,"journal":{"name":"Spin","volume":" July","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135186668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Gapless linear band structure quantum electronic materials play important roles in quantum computing developments due to their novel superb electronic transport properties and two-dimensional (2D) gateable device possibility. However, the sensitive surface of quantum electronic materials easily reacted with ambient air molecules so as to change their intrinsic transport properties. We review a series of our works to show the importance of surface reactions in quantum electronic materials, such as graphene. By using different electronic transport facilities and in situ vacuum annealing methods, we are able to gently clean the absorbed air molecules on graphene so as to change the carrier densities and the electronic transport properties, which is a great improvement for 2D-quantum material-based quantum chips and computing devices.
{"title":"Modulations for quantum electronic material transports by vacuum annealing methods","authors":"Ji-Wei Ci, Bo-Yu Chen, Yuan-Chih Hung, Huan-Chien Wang, Dung-Sheng Tsai, Wu-Yih Uen, Yuan-Liang Zhong, Jyh-Shyang Wang, Chi-Te Liang, Chiashain Chuang","doi":"10.1142/s2010324723400234","DOIUrl":"https://doi.org/10.1142/s2010324723400234","url":null,"abstract":"Gapless linear band structure quantum electronic materials play important roles in quantum computing developments due to their novel superb electronic transport properties and two-dimensional (2D) gateable device possibility. However, the sensitive surface of quantum electronic materials easily reacted with ambient air molecules so as to change their intrinsic transport properties. We review a series of our works to show the importance of surface reactions in quantum electronic materials, such as graphene. By using different electronic transport facilities and in situ vacuum annealing methods, we are able to gently clean the absorbed air molecules on graphene so as to change the carrier densities and the electronic transport properties, which is a great improvement for 2D-quantum material-based quantum chips and computing devices.","PeriodicalId":54319,"journal":{"name":"Spin","volume":"184 S492","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135775909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-06DOI: 10.4230/LIPIcs.APPROX/RANDOM.2023.23
Kalen Patton, Matteo Russo, Sahil Singla
Optimization problems often involve vector norms, which has led to extensive research on developing algorithms that can handle objectives beyond the $ell_p$ norms. Our work introduces the concept of submodular norms, which are a versatile type of norms that possess marginal properties similar to submodular set functions. We show that submodular norms can accurately represent or approximate well-known classes of norms, such as $ell_p$ norms, ordered norms, and symmetric norms. Furthermore, we establish that submodular norms can be applied to optimization problems such as online facility location, stochastic probing, and generalized load balancing. This allows us to develop a logarithmic-competitive algorithm for online facility location with symmetric norms, to prove a logarithmic adaptivity gap for stochastic probing with symmetric norms, and to give an alternative poly-logarithmic approximation algorithm for generalized load balancing with outer $ell_1$ norm and inner symmetric norms.
{"title":"Submodular Norms with Applications To Online Facility Location and Stochastic Probing","authors":"Kalen Patton, Matteo Russo, Sahil Singla","doi":"10.4230/LIPIcs.APPROX/RANDOM.2023.23","DOIUrl":"https://doi.org/10.4230/LIPIcs.APPROX/RANDOM.2023.23","url":null,"abstract":"Optimization problems often involve vector norms, which has led to extensive research on developing algorithms that can handle objectives beyond the $ell_p$ norms. Our work introduces the concept of submodular norms, which are a versatile type of norms that possess marginal properties similar to submodular set functions. We show that submodular norms can accurately represent or approximate well-known classes of norms, such as $ell_p$ norms, ordered norms, and symmetric norms. Furthermore, we establish that submodular norms can be applied to optimization problems such as online facility location, stochastic probing, and generalized load balancing. This allows us to develop a logarithmic-competitive algorithm for online facility location with symmetric norms, to prove a logarithmic adaptivity gap for stochastic probing with symmetric norms, and to give an alternative poly-logarithmic approximation algorithm for generalized load balancing with outer $ell_1$ norm and inner symmetric norms.","PeriodicalId":54319,"journal":{"name":"Spin","volume":"5 1","pages":"23:1-23:22"},"PeriodicalIF":1.8,"publicationDate":"2023-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88604780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-05DOI: 10.1142/s2010324723400246
Sachin Kumar, Sourabh Manna, John Rex Mohan, Utkarsh Shashank, Joseph Vimal Vas, Mayank Mishra, Surbhi Gupta, Hironori Asada, Yasuhiro Fukuma, Rajdeep Singh Rawat, Rohit Medwal
{"title":"Pulsed hot dense oxygen plasma irradiation of platinum for improved spin Hall effect","authors":"Sachin Kumar, Sourabh Manna, John Rex Mohan, Utkarsh Shashank, Joseph Vimal Vas, Mayank Mishra, Surbhi Gupta, Hironori Asada, Yasuhiro Fukuma, Rajdeep Singh Rawat, Rohit Medwal","doi":"10.1142/s2010324723400246","DOIUrl":"https://doi.org/10.1142/s2010324723400246","url":null,"abstract":"","PeriodicalId":54319,"journal":{"name":"Spin","volume":"301 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135483950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-22DOI: 10.1142/s2010324723500303
S. Mishra, R. N. P. Choudhary, S. K. Parida
{"title":"Structural, optical, relaxor and transport properties of a nanocrystalline double perovskite: Ba<sub>2</sub>(FeMo)O<sub>6</sub>","authors":"S. Mishra, R. N. P. Choudhary, S. K. Parida","doi":"10.1142/s2010324723500303","DOIUrl":"https://doi.org/10.1142/s2010324723500303","url":null,"abstract":"","PeriodicalId":54319,"journal":{"name":"Spin","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136099248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effect of defects on the characteristics of CoFeB-MgO based MRAM structure","authors":"Bosen Zhang, Jieyao Chen, Junlin Wang, Wenjia Li, Kaiyu Tong, Guanqi Li, Jun Ma, Jing Wu, Yongbing Xu","doi":"10.1142/s2010324723500297","DOIUrl":"https://doi.org/10.1142/s2010324723500297","url":null,"abstract":"","PeriodicalId":54319,"journal":{"name":"Spin","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136129680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-30DOI: 10.1142/s2010324723500285
Aftab Aslam Parwaz Khan, Z. Fadil, P. Raizada, Pardeep Singh, M. Alotaibi, Mohammad Omaish Ansari, Anish Khan, Abdullah M. Asiri, C. Raorane
{"title":"Magnetic and thermal hysteresis in monolayer anthracene-type nanostructures","authors":"Aftab Aslam Parwaz Khan, Z. Fadil, P. Raizada, Pardeep Singh, M. Alotaibi, Mohammad Omaish Ansari, Anish Khan, Abdullah M. Asiri, C. Raorane","doi":"10.1142/s2010324723500285","DOIUrl":"https://doi.org/10.1142/s2010324723500285","url":null,"abstract":"","PeriodicalId":54319,"journal":{"name":"Spin","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45941486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-30DOI: 10.1142/s2010324723400167
Lien-Po Yu, Chin-Fu Nien
Quantum computing promises to have a tremendous advantage over its classical counterpart for solving computationally hard problems, yet remains in a relatively early stage for practical applications owing to the limited capabilities of today’s quantum computers. The approach to the special purposes of quantum computers by exploiting the special-purpose physics-inspired or quantum-inspired computers is emerging as a novel alternative to its quantum counterpart in tackling hard problems in high-performance computing. Inspired by physics, the Ising machine — a type of special-purpose computer that implements or emulates physics or quantum effects of the Ising model to speed up finding solutions to optimization problems — has recently become an active research area in the field of combinatorial optimization. This paper is to address the key enabling software and hardware technology underlying physics-inspired optimization using Ising machines in the unified quadratic unconstrained binary optimization (QUBO) framework for modeling and solving computationally hard combinatorial optimization problems, and with an aim to shed some light on the challenges and opportunities associated with the ever-growing landscape of this novel high-performance computing.
{"title":"Physics-Inspired Optimization in the QUBO Framework: Key Concepts and Approaches","authors":"Lien-Po Yu, Chin-Fu Nien","doi":"10.1142/s2010324723400167","DOIUrl":"https://doi.org/10.1142/s2010324723400167","url":null,"abstract":"Quantum computing promises to have a tremendous advantage over its classical counterpart for solving computationally hard problems, yet remains in a relatively early stage for practical applications owing to the limited capabilities of today’s quantum computers. The approach to the special purposes of quantum computers by exploiting the special-purpose physics-inspired or quantum-inspired computers is emerging as a novel alternative to its quantum counterpart in tackling hard problems in high-performance computing. Inspired by physics, the Ising machine — a type of special-purpose computer that implements or emulates physics or quantum effects of the Ising model to speed up finding solutions to optimization problems — has recently become an active research area in the field of combinatorial optimization. This paper is to address the key enabling software and hardware technology underlying physics-inspired optimization using Ising machines in the unified quadratic unconstrained binary optimization (QUBO) framework for modeling and solving computationally hard combinatorial optimization problems, and with an aim to shed some light on the challenges and opportunities associated with the ever-growing landscape of this novel high-performance computing.","PeriodicalId":54319,"journal":{"name":"Spin","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48585935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-25DOI: 10.1142/s2010324723500273
M. Choubi, S. Harir, A. El Ghazrani, A. Lahbibi, M. Sougrati, Y. Boughaleb
{"title":"Thermodynamic Properties and Magnetocaloric Effect of Spins - ½ Square Lattice","authors":"M. Choubi, S. Harir, A. El Ghazrani, A. Lahbibi, M. Sougrati, Y. Boughaleb","doi":"10.1142/s2010324723500273","DOIUrl":"https://doi.org/10.1142/s2010324723500273","url":null,"abstract":"","PeriodicalId":54319,"journal":{"name":"Spin","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42080841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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